Read COLUMN LOAD BROCHURE2 text version

HOLLOW STRUCTURAL SECTIONS

Column Load Tables

OF NORTH AMERICA

HSS Manufacturing Methods

The transformation of steel strip into hollow structural sections (HSS) is the result of operations including forming, welding and sizing. Currently three methods are being used in North America for the manufacture of HSS. These methods, including two ERW methods and an SAW method, are described below. Both ERW methods meet ASTM A 500 and CSA G-40.21 requirements for the manufacture of HSS, and the ERW sizes included in this publication may be produced to either standard. The SAW method is not included as a manufacturing process in the ASTM or CSA specification. SAW sizes listed in this publication can be specified to meet desired physical and dimensional criteria of ASTM A500 and CSA G-40.21

Electric Resistance Welding (ERW) Process In the tube mill, flat steel strip (1) is formed continuously around its longitudinal axis to produce a round tube. This is done by moving the strip through a progressive set of rolls (2-6). The strip edges (7) are heated by either high frequency induction or contact welding and then forged together by weld rolls to create a continuous longitudinal weld without the addition of filler metal. The weld seam (8) is then cooled and processed through a set of sizing/shaping rolls which cold-form it into a round (9), square (10) or rectangular (11) section.

5 6 7 4 3 2 1

8

9

10

11

Form-Square Weld-Square (ERW) Process In the weld mill, driven forming dies progressively shape the flat strip (1) by forming the top two corners (2) of the square or rectangular tube in the initial forming station. Subsequent stations form the bottom two corners (3) of the shape. No cold working of the sides of the shape is performed, and the shape's seam is welded by high-frequency contacts when the tube is near its final shape and size. The welded tube (4) is cooled and then driven through a series of sizing stations which qualifies the tube's final dimensions.

4

1

2

3

3

2

1

Submerged Arc Weld (SAW) Process Two identical pieces of flat strip (1) are placed in a press brake and formed into two identical halves (2) of a finished tube size. A backup bar is tack welded to each leg of one of the half-sections (3). The two halfsections are fitted together toe-to-toe (4) and welded by the submerged arc process to complete the square or rectangular section (5).

1 2 3

5

4

2

1

2

STI/HSS Member Companies

Bull Moose Tube Company 1819 Clarkson Road, Suite 100 Chesterfield, MO 63017 Telephone: (636) 537-2600 (800) 325-4467 Fax: (636) 537-5848 Columbia Structural Tubing 8735 N Harborgate ST Portland, OR 97203 Telephone: (503) 737-1200 (877) 737-1202 Fax: (503) 737-1202 IPSCO Tubulars Inc. P.O. Box 18, 2011 7th Avenue Camanche, IA 52730 Telephone: (563) 242-0000 (800) 945-8936 Fax: (563) 242-9137 Maruichi American Corp. P.O. Box 3187 11529 Greenstone Ave. Santa Fe Springs, CA 90670 Telephone: (562) 903-8600 (800) 654-5495 Fax: (562) 903-8601 Prolamsa (Mexico Headquarters) Carretera a Colombia Km. 5.75 Escobedo, N.L., Mexico C.P. 45560 Tel +52 (81) 8154-0200 Fax +52 (81) 8901-1709 Prolamsa USA, Inc. (U.S. Headquarters) 770 South Post Oak Lane Suite 200, Houston, TX 77056 Tel (281) 494-0900 Fax (281) 494-0990 Southland Tube Inc. P.O. Box 2425 Birmingham, AL 35201-2425 Telephone: (205) 251-1884 (800) 543-9024 FAX: (205) 251-1553 Valmont Industries (Structural Tube Division) HWY 275, P.O. Box 358 Valley, NB 68064 Telephone: (800) 345-6825 Fax: (402) 359-4481 Vest, Incorporated 6023 Alcoa Avenue Los Angeles, CA 90058 Telephone: (323) 581-8823 (800) 421-6370 Fax: (323) 581-3465 Welded Tube 111 Rayette Road Concord, Ontario, Canada L4K 2E9 Telephone: (905) 669-1111 (800) 565-8823 Fax: (905) 669-8570

Please Note: We've tried to make this brochure as comprehensive and factual as possible. However, some information may have been updated since the time of printing. Your HSS producer is your best source for up-to-date information.

OF NORTH AMERICA

Foreword

Tables of allowable axial compressive loads, in kips, are presented for square, rectangular and round hollow structural sections (HSS) manufactured by the electric resistance welding (ERW) method and for square and rectangular HSS manufactured by the submerged arc welding (SAW) method. Tables of allowable stresses for compression members of 42 ksi to 70 ksi specified minimum yield stress are also included. The allowable axial compressive loads, in kips, and the allowable axial compressive stresses, in ksi, have been calculated in accordance with the 1989 "Specification for Structural Steel Buildings - Allowable Stress Design and Plastic Design" published by the American Institute of Steel Construction. The allowable loads are based upon section property data for HSS that were recalculated in 1996 to account for today's more precise manufacturing methods. Recalculated section property data for HSS is published in "Hollow Structural Sections - Dimensions and Section Properties" available from the Steel Tube Institute of North America. Tables for square and rectangular HSS are presented for Fy = 46 ksi and for Fy = 50 ksi. Separate tables are used for HSS sizes produced by the ERW and SAW manufacturing methods. Tables for round HSS are presented for Fy = 42 ksi, Fy = 46 ksi, and Fy = 50 ksi. Only round sizes produced by the ERW manufacturing method are included. The allowable axial loads have been calculated for effective lengths, KL, with respect to the least radius of gyration (r or ry) varying from 0 to 40 feet. AlSC "Specification" Appendix B5.2 is used to calculate the allowable loads for members with slender elements. These members are identified in the tables with an asterisk (*) immediately following the design wall thickness parameter. The properties at the bottom of the tables are useful for determining column strength with respect to the major axis and for the design of columns subject to combined axial and bending loads. Refer to part 3, Column Design, in the AISC 9th Edition "Manual of Steel Construction" for a discussion of effective length, strength about the major axis, and combined axial and bending loading (interaction). Symbols in these tables follow those used in the AISC "Manual". The tabulated values of allowable axial compressive stresses on pages 124 through 126, are calculated in accordance with the requirements of AISC "Specification" Chapter E, Formulae (E2-1) and (E2-2).

The information presented in this publication has been prepared in accordance with recognized engineering principles and is for general information only.While it is believed to be accurate, this information should not be used or relied upon for any specific application without competent professional examination and verification of its accuracy, suitability, and applicability by a licensed professional engineer, designer, or architect.The publication of the material contained herein is not intended as a representation or warranty on the part of The Steel Tube Institute of North America or of any other person named herein, that this information is suitable for any general or particular use or of freedom from infringement of any patent or patents. Anyone making use of this information assumes all liability arising from such use. Caution must be exercised when relying upon other specifications and codes developed by other bodies and incorporated by reference herein since such material may be modified or amended from time to time subsequent to the printing of this edition.The Institute bears no responsibility for such material other than to refer to it and incorporate it by reference at the time of the initial publication of this edition.

Table of Contents

Page How to Use the Column Load Tables ........................... 5 Column Load Tables: Square HSS (ERW) Rectangular HSS (ERW) Square HSS (ERW) Rectangular HSS (ERW) Square HSS (SAW) Rectangular HSS (SAW) Square HSS (SAW) Rectangular HSS (SAW) Fy = 46 ksi ..................... 6 Fy = 46 ksi .....................14 Fy = 50 ksi ..................... 36 Fy = 50 ksi .....................44 Fy = 46 ksi .....................67 Fy = 46 ksi .....................69 Fy = 50 ksi .....................72 Fy = 50 ksi .....................74 Page Round HSS (ERW) Fy = 42 ksi ................................. 78 Round HSS (ERW) Fy = 46 ksi .................................93 Round HSS (ERW) Fy = 50 ksi .............................. 108 Allowable Stress Tables Fy=42 ksi ......................................................... 124 Fy=46 ksi ......................................................... 124 Fy=50 ksi ......................................................... 125 Fy=60 ksi ......................................................... 125 Fy=65 ksi ......................................................... 126 Fy=70 ksi ......................................................... 126

"Designs for the 21st Century"

4

How To Use The Column Load Tables

Example I Select the lightest 8-inch square ERW HSS column of Fy = 46 ksi (ASTM A500 Gr. B) to support a concentrated axial compressive load of 152 kips. The largest effective length, KL, is 20 feet. Enter the Fy = 46 ksi table (page 8) for the 8-inch square ERW HSS. Read across the row at KL = 20 and note the following: 8 x 8 x 5/8 x 1/2 x 3/8 x 5/16 x 1/4 can carry 296 kips can carry 247 kips can carry 193 kips can carry 163 kips can carry 133 kips > 152 kips - O.K. > 152 kips - O K. > 152 kips - O.K > 152 kips - O.K. < 152 kips - No Good Example III Select the lightest 10-inch x 6-inch rectangular ERW HSS column of Fy = 50 ksi (ASTM A500 Gr. C) to support a concentrated axial compressive load of 220 kips. The effective length, KL, with respect to the minor axis is 16 feet. The effective length, KL, with respect to the major axis is 30 feet. Enter the Fy = 50 ksi table (page 51) for the 10-inch x 6-inch rectangular ERW HSS. Read across the row at KL = 16 and note the following: 10 x 6 x 5/8 x 1/2 x 3/8 can carry 305 kips can carry 256 kips can carry 200 kips > 220 kips - O.K. > 220 kips - O.K. < 220 kips - No Good

Select: 8 x 8 x 5/16 HSS (Weight = 31.84 lbs./ft.) Tentatively select: 10 x 6 x 1/2 rx / ry= 1.49 Equivalent effective length for the major axis: 30 / 1.49 = 20.1 ft. > 16 ft. Therefore major axis governs. Enter the same table, read across the row at KL = 20.1 and note the following: 10 x 6 x 5/8 can carry 229 kips (interpolated) > 220 kips rx / ry= 1.50 - O.K. 10 x 6 x 1/2 can carry 195 kips (interpolated) < 220 kips - No Good Final Selection: 10 x 6 x 5/8 HSS (Weight= 59.32 lbs./ft.)

Example II Select the lightest square ERW HSS column of Fy = 46 ksi (ASTM A500 Gr. B) to support a concentrated axial compressive load of 120 kips. The largest effective length, KL, is 14 feet. Enter the Fy = 46 ksi tables for square HSS. Read across the rows at KL = 14 and note the following: 5 x 5 x 1/2 can carry 125 kips > 120 kips - O.K. (Weight = 28.43 lbs./ft.) (page 10) 5 1/2 x 5 l/2 x 3/8 can carry 124 kips > 120 kips - O.K. (Weight = 24.93 lbs. /ft.) (page 9) 6 x 6 x 5/16 can carry 124 kips > l20 kips - O.K. (Weight = 23.34 lbs./ft.) (page 9) 7 x 7 x l/4 can carry 130 kips > 120 kips - O.K. (Weight = 22.42 lbs./ft.) (page 8) 8 x 8 x 1/4 can carry 158 kips > 120 kips - O.K. (Weight = 25.82 lbs./ft.) (page 8) 9 x 9 x 3/16 can carry 129 kips > 120 kips - O.K. (Weight = 22.18 lbs./ft.) (page 7) Final Selection: 9 x 9 x 3/16 HSS (Weight = 22. l8 lbs./ft.)

5

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 127.37 0.581 1/2 103.30 0.465 16 x 16 3/8 78.52 0.349* 5/16 65.87 0.291* 5/8 110.36 0.581 1/2 89.68 0.465 14 x 14 3/8 68.31 0.349 Fy = 46 ksi 516 511 509 506 503 500 496 493 489 486 482 478 473 469 465 460 456 451 446 441 436 430 425 420 414 408 402 396 390 384 378 372 365 359 352 345 338 331 324 317 5/16 57.36 0.291* 5/8 93.34 0.581 1/2 76.07 0.465 12 x 12 3/8 58.10 0.349

Fy=46

ERW

5/16 48.86 0.291*

1/4 39.43 0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

966 958 954 949 944 939 934 928 923 917 910 904 897 891 884 876 869 862 854 846 838 829 821 812 804 795 785 776 767 757 747 737 727 717 707 696 685 674 663 652

781 775 771 768 764 760 755 751 746 742 737 732 726 721 715 710 704 698 691 685 679 672 665 658 651 644 637 630 622 614 607 599 591 582 574 566 557 548 540 531

552 549 547 545 543 541 539 537 534 532 530 527 524 522 519 516 513 510 506 503 500 496 492 489 485 481 477 473 468 464 460 455 450 444 438 432 426 419 412 406

418 416 415 414 412 411 409 408 406 405 403 401 399 397 395 393 391 389 387 385 382 380 377 375 372 369 367 364 361 358 355 352 349 345 342 338 335 331 327 324

836 828 824 819 814 809 803 798 792 785 779 772 765 758 751 743 735 728 719 711 702 694 685 675 666 657 647 637 627 616 606 595 585 574 562 551 539 528 516 504

679 673 669 665 661 657 653 648 643 638 633 628 622 616 610 604 598 592 585 578 572 565 557 550 542 535 527 519 511 503 494 486 477 468 460 450 441 432 422 413

392 389 388 387 385 383 382 380 378 376 374 372 369 367 365 362 359 357 354 351 348 345 342 339 336 332 329 325 321 317 313 309 305 301 296 291 285 279 273 267

709 701 697 692 687 681 675 669 663 656 649 642 635 627 619 611 603 594 585 576 567 558 548 538 528 517 507 496 485 474 462 451 439 427 415 402 389 376 363 350

577 570 567 563 559 554 550 545 540 534 529 523 517 511 505 498 492 485 478 471 463 456 448 440 432 424 415 407 398 389 380 371 361 351 342 332 322 311 301 290

442 437 434 431 428 425 421 417 414 410 405 401 397 392 387 382 377 372 367 361 356 350 344 338 332 326 320 313 307 300 293 286 279 272 264 257 249 241 234 225

365 362 360 358 357 355 352 350 347 343 340 336 333 329 325 321 317 312 308 303 299 294 289 284 279 274 269 263 258 252 247 241 235 229 223 217 210 204 197 191

259 257 256 255 254 253 251 250 248 247 245 243 241 240 238 236 233 231 229 227 224 222 219 217 214 211 208 205 202 198 195 191 188 184 180 176 171 165 160 155

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

35.0 1370 6.25 0.204 205

28.3 1130 6.31 0.200 169

21.5 873 6.37 0.197 130

18.1 739 6.39 0.196 110

30.3 896 5.44 0.237 134

24.6 743 5.49 0.232 111

18.7 577 5.55 0.227 86.2

15.7 490 5.58 0.224 73.2

25.7 548 4.62 0.281 81.8

20.9 457 4.68 0.274 68.2

16.0 357 4.73 0.269 53.3

13.4 304 4.76 0.264 45.4

10.8 248 4.79 0.261 37.0

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

6

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 76.33 0.581 1/2 62.46 0.465 3/8 47.90 0.349 10 x 10 5/16 40.35 0.291 1/4 32.63 0.233* 3/16 24.73 0.174* Fy = 46 ksi 152 151 150 149 148 148 147 146 144 143 142 141 139 138 137 135 134 132 130 129 127 125 123 121 119 116 114 112 109 106 103 100 97 94 90 86 82 78 74 70 1/2 55.66 0.465 3/8 42.79 0.349 9x9 5/16 36.10 0.291 1/4 29.23

Fy=46

ERW

3/16 22.18 0.174*

0.233

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

580 571 567 562 556 550 544 538 531 524 516 509 501 492 484 475 466 457 447 437 427 416 406 395 384 372 360 348 336 324 311 298 284 271 257 243 230 218 207 197

475 468 464 460 456 451 446 441 436 430 424 418 411 405 398 391 384 376 368 360 352 344 335 327 318 309 299 290 280 270 260 249 239 228 216 205 194 184 175 166

364 359 356 353 350 347 343 339 335 331 326 322 317 312 307 301 296 290 284 279 272 266 260 253 247 240 233 225 218 211 203 195 187 179 171 162 154 146 138 131

306 302 300 297 295 292 289 285 282 278 275 271 267 263 258 254 249 245 240 235 230 224 219 214 208 202 196 190 184 178 172 165 159 152 145 138 131 124 117 112

239 236 235 234 232 230 229 227 225 223 220 218 216 212 209 205 202 198 194 190 186 182 178 173 169 164 160 155 150 145 140 135 129 124 118 113 107 101 96 92

422 416 412 408 403 398 393 388 382 376 370 364 357 350 343 335 328 320 312 303 295 286 277 267 258 248 238 228 217 207 196 184 173 163 154 146 138 131 124 118

326 321 318 315 311 308 304 300 295 291 286 281 276 271 266 260 254 248 242 236 230 223 216 209 202 195 187 180 172 164 155 147 138 130 123 116 110 104 99 94

274 270 267 265 262 259 256 252 249 245 241 237 233 228 224 219 215 210 205 199 194 188 183 177 171 165 159 153 146 139 133 126 118 112 105 99 94 89 85 81

222 218 216 214 212 210 207 204 201 198 195 192 189 185 182 178 174 170 166 162 158 153 149 144 139 134 129 124 119 114 108 103 97 91 86 81 77 73 69 66

145 144 143 142 141 140 139 137 136 135 133 132 130 129 127 125 123 121 119 117 115 112 110 107 104 102 98 95 91 87 83 79 74 70 66 62 59 56 53 51

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

21.0 304 3.80 0.345 45.4

17.2 256 3.86 0.336 38.2

13.2 202 3.92 0.327 30.2

11.1 172 3.94 0.323 25.7

8.96 141 3.97 0.318 21.1

6.76 108 4.00 0.313 16.1

15.3 182 3.45 0.378 27.2

11.8 145 3.51 0.366 21.7

9.92 124 3.54 0.360 18.5

8.03 102 3.56 0.354 15.2

6.06 78.2 3.59 0.349 11.7

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

7

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 59.32 0.581 1/2 48.85 0.465 3/8 37.69 0.349 8x8 5/16 31.84 0.291 1/4 25.82 0.233 3/16 19.63 5/8 50.81 1/2 42.05 0.465 3/8 32.58 0.349 7x7 5/16 27.59 0.291 1/4 22.42 0.174* 0.581 Fy = 46 ksi 138 136 135 134 133 131 130 129 127 125 124 122 120 118 116 113 111 108 105 101 98 94 91 87 83 79 75 71 67 63 59 55 52 49 46 43 41 39 37 35 386 378 373 367 361 355 348 340 332 324 315 306 297 287 277 266 255 244 232 220 208 195 182 168 155 143 133 123 115 107 101 94 89 84 79 75 71 67 64 60

Fy=46

ERW

3/16 17.08 0.174

0.233

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

453 444 439 434 428 422 415 408 401 393 385 376 367 358 349 339 328 318 307 296 284 272 260 248 235 222 208 194 181 169 158 148 140 132 124 117 111 105 100 95

373 366 362 358 353 348 342 337 331 325 318 311 304 297 289 281 273 264 256 247 237 228 218 208 198 187 176 165 154 144 135 126 119 112 106 100 95 90 85 81

287 282 279 276 272 268 264 260 256 251 246 241 236 230 224 218 212 206 199 193 186 179 171 164 156 148 140 132 123 115 108 101 95 90 85 80 76 72 68 65

242 238 235 232 229 226 223 219 216 212 208 203 199 194 190 185 180 174 169 163 158 152 146 140 133 127 120 113 106 99 93 87 82 77 73 69 65 62 59 56

196 193 191 188 186 184 181 178 175 172 169 165 162 158 154 150 146 142 137 133 128 124 119 114 109 103 98 93 87 81 76 71 67 63 60 56 53 51 48 46

320 313 309 305 300 295 289 283 277 270 263 256 248 240 232 223 215 206 196 186 176 166 155 144 133 123 114 106 99 92 87 81 76 72 68 64 61 58 55 52

248 242 239 236 232 228 224 220 215 210 205 199 194 188 181 175 169 162 155 148 140 132 124 116 108 100 92 86 80 75 70 66 62 58 55 52 49 47 44 42

209 205 203 200 197 193 190 186 182 178 174 169 164 160 154 149 144 138 132 126 120 114 107 100 93 86 80 74 69 65 61 57 53 50 48 45 43 40 38 36

170 167 165 163 160 157 155 152 148 145 142 138 134 130 126 122 118 113 108 104 99 94 88 83 77 72 66 62 58 54 50 47 44 42 40 37 35 34 32 30

129 126 125 123 121 119 117 115 113 110 107 105 102 99 96 93 89 86 83 79 75 71 68 63 59 55 51 47 44 41 39 36 34 32 30 29 27 26 24 23

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

16.4 146 2.99 0.449 21.8

13.5 125 3.04 0.432 18.7

10.4 99.6 3.10 0.418 14.9

8.76 85.6 3.13 0.409 12.8

7.10 70.7 3.15 0.402 10.6

5.37 54.4 3.18 0.395 8.12

14.0 93.3 2.58 0.525 13.9

11.6 80.5 2.63 0.504 12.0

8.97 64.9 2.69 0.484 9.69

7.59 56.1 2.72 0.474 8.38

6.17 46.5 2.75 0.464 6.94

4.67 36.0 2.77 0.454 5.38

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

8

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 42.30 0.581 1/2 35.24 0.465 3/8 27.48 0.349 6x6 5/16 23.34 0.291 1/4 19.02 0.233 3/16 14.53 1/8 9.86 3/8 24.93 0.349 5/16 21.21 0.291 5 1/2 x 51/2 1/4 17.32 0.233 3/16 13.25 0.174 0.116* Fy = 46 ksi 110 107 106 104 102 100 98 95 93 90 87 84 81 78 75 71 68 64 60 56 52 48 44 40 37 34 32 30 28 26 24 23 21 20 19 18 17 16 15 ==== 65 64 63 62 62 61 60 59 58 57 55 54 53 51 49 48 46 44 41 39 36 33 30 28 26 24 22 20 19 18 17 16 15 14 13 12 12 11 11 ====

Fy=46

ERW

1/8 9.01 0.116*

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

323 314 309 303 297 290 282 274 266 257 248 238 227 217 206 194 182 169 156 143 130 118 108 99 91 85 78 73 68 63 59 56 52 49 47 44 ====

269 262 258 253 248 242 236 230 223 216 208 201 192 184 175 166 156 146 136 125 114 104 95 87 80 74 69 64 60 56 52 49 46 43 41 39 37 ====

209 204 201 197 193 189 185 180 175 169 164 158 152 145 138 132 124 117 109 101 93 84 77 71 65 60 56 52 49 45 43 40 38 35 33 32 30 28 ====

177 173 170 167 164 161 157 153 149 144 140 135 129 124 119 113 107 101 94 87 81 74 67 62 57 53 49 45 42 40 37 35 33 31 29 27 26 25 ====

145 141 139 137 134 131 128 125 122 118 114 110 106 102 98 93 88 83 78 73 67 61 56 52 48 44 41 38 35 33 31 29 27 26 24 23 22 21 20 ====

190 185 181 178 174 169 165 160 154 149 143 137 130 124 116 109 102 94 85 77 70 64 58 54 49 46 42 39 37 34 32 30 28 27 ====

161 157 154 151 148 144 140 136 132 127 122 117 112 106 100 94 88 81 75 68 61 56 51 47 43 40 37 34 32 30 28 26 25 23 22 ====

132 128 126 123 121 118 115 111 108 104 100 96 92 87 83 78 73 67 62 56 51 46 42 39 36 33 31 29 27 25 23 22 21 19 18 ====

100 98 96 94 92 90 88 85 82 80 77 74 70 67 64 60 56 52 48 44 40 36 33 30 28 26 24 22 21 20 18 17 16 15 14 14 ====

62 61 60 59 58 57 56 55 54 53 51 50 48 46 44 41 39 36 33 31 28 25 23 21 20 18 17 16 15 14 13 12 11 11 10 9 ====

PROPERTIES

Area, In.2 I, In. 4 r, In. B, Bending Factor a ÷ 10 6 11.7 55.1 2.17 0.637 8.23 9.74 48.2 2.23 0.606 7.20 7.58 39.4 2.28 0.577 5.88 6.43 34.3 2.31 0.562 5.12 5.24 28.6 2.34 0.550 4.27 3.98 22.3 2.37 0.535 3.33 2.70 15.5 2.39 0.523 2.31 6.88 29.7 2.08 0.637 4.44 5.85 25.9 2.11 0.621 3.87 4.77 21.7 2.13 0.604 3.24 3.63 17.0 2.16 0.587 2.54 2.46 11.8 2.19 0.573 1.76

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

9

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 28.43 0.465 3/8 22.37 0.349 5/16 19.08 0.291 5x5 1/4 15.62 0.233 3/16 11.97 0.174 1/8 8.16 1/2 25.03 3/8 19.82 0.349 4 1/2 x 41/2 5/16 16.96 0.291 1/4 13.91 0.233 0.116* 0.465 Fy = 46 ksi 59 58 57 56 55 54 53 51 49 47 45 43 41 39 36 34 31 28 25 23 21 19 17 16 15 14 13 12 11 10 10 9 8 ==== 192 185 180 175 169 163 156 148 140 132 123 114 104 94 83 73 65 58 52 47 42 39 35 32 30 28 ====

Fy=46

ERW

3/16 10.70 0.174

1/8 7.31 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

217 210 206 201 195 189 183 176 168 161 152 144 135 125 115 105 94 84 75 68 61 56 51 47 43 40 37 35 32 30 ====

171 165 162 158 154 149 144 139 134 128 121 115 108 101 93 86 77 69 62 56 51 46 42 39 36 33 31 29 27 25 23 ====

145 141 138 135 131 127 123 119 114 109 104 99 93 87 81 75 68 61 55 49 45 41 37 34 32 29 27 25 23 22 20 ====

119 115 113 110 108 104 101 98 94 90 86 82 77 72 67 62 57 51 46 42 38 34 31 29 27 25 23 21 20 18 17 16 ====

91 88 86 84 82 80 77 75 72 69 66 63 60 56 52 49 44 40 36 33 30 27 25 23 21 19 18 17 16 15 14 13 ====

151 146 142 138 134 129 124 119 113 107 100 93 86 78 70 62 55 49 44 40 36 33 30 28 25 23 22 ====

129 125 122 118 115 111 107 102 97 92 87 81 75 68 62 55 49 43 39 35 32 29 27 24 22 21 19 18 ====

106 102 100 97 94 91 88 84 80 76 72 67 62 57 52 47 41 37 33 30 27 25 23 21 19 18 16 15 ====

81 78 76 74 72 70 67 65 62 59 55 52 48 44 40 36 32 29 26 23 21 19 18 16 15 14 13 12 11 ====

55 53 52 51 49 48 46 44 42 40 38 36 33 31 28 26 23 20 18 16 15 14 12 11 11 10 9 8 8 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

7.88 26.0 1.82 0.758 3.88

6.18 21.7 1.87 0.712 3.24

5.26 19.0 1.90 0.692 2.84

4.30 16.0 1.93 0.672 2.39

3.28 12.6 1.96 0.651 1.88

2.23 8.80 1.99 0.634 1.31

6.95 18.0 1.61 0.869 2.69

5.48 15.3 1.67 0.806 2.28

4.68 13.5 1.70 0.780 2.02

3.84 11.4 1.73 0.758 1.70

2.93 9.02 1.75 0.731 1.35

2.00 6.35 1.78 0.709 0.948

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253/ Fy Note: Double Horizontal Line indicates k l/r limit of 200.

10

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 21.63 0.465 3/8 17.27 0.349 5/16 14.83 0.291 4x4 1/4 12.21 0.233 3/16 9.42 0.174 1/8 6.46 0.116 Fy = 46 ksi 49 47 46 44 43 41 39 37 35 33 31 28 26 23 20 18 16 14 13 11 10 9 9 8 7 7 ==== 3/8 14.72 0.349 5/16 12.70 0.291 3 1/2 x 3 1/2 1/4 10.51 0.233 3/16 8.15 0.174

Fy=46

ERW

1/8 5.61 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

166 159 154 149 142 136 128 121 112 103 94 84 73 63 55 48 43 38 34 31 28 26 23 ====

132 126 123 119 114 109 103 98 91 85 78 70 62 54 47 41 37 33 29 26 24 22 20 18 ====

113 108 105 102 98 94 89 85 79 74 68 62 55 48 42 37 33 29 26 24 21 20 18 16 ====

93 89 87 84 81 78 74 70 66 62 57 52 47 41 36 32 28 25 22 20 18 17 15 14 13 ====

71 68 67 65 62 60 57 54 51 48 44 41 37 33 29 25 22 20 18 16 15 13 12 11 10 ====

113 107 103 99 94 89 83 77 70 63 55 47 40 34 30 26 23 21 19 17 15 ====

97 92 89 86 82 77 72 67 61 55 49 42 36 31 27 24 21 19 17 15 14 ====

80 76 74 71 68 64 60 56 52 47 42 36 31 27 23 21 18 16 15 13 12 11 ====

62 59 57 55 52 50 47 44 41 37 33 29 25 22 19 17 15 13 12 11 10 9 ====

43 41 39 38 36 34 32 30 28 26 23 21 18 15 13 12 10 9 8 7 7 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10

6 4

6.02 11.9 1.41 1.01 1.78

4.78 10.3 1.46 0.928 1.54

4.10 9.14 1.49 0.897 1.36

3.37 7.80 1.52 0.864 1.16

2.58 6.21 1.55 0.831 0.927

1.77 4.40 1.58 0.805 0.657

4.09 6.48 1.26 1.10 0.968

3.52 5.84 1.29 1.05 0.872

2.91 5.04 1.32 1.01 0.753

2.24 4.05 1.35 0.968 0.605

1.54 2.90 1.37 0.929 0.433

Note: Double Horizontal Line indicates k l/r limit of 200.

11

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 12.17 0.349 5/16 10.58 0.291 3x3 1/4 8.81 0.233 3/16 6.87 0.174 1/8 4.75 0.116 5/16 8.45 2 1/2 x 2 1/2 1/4 7.11 3/16 5.59 0.174 1/8 3.90 0.116 1/4 6.26 0.233 3/16 4.96 0.291 0.233 Fy = 46 ksi 65 60 56 52 47 42 36 29 23 19 16 13 11 10 ==== 54 50 47 44 40 36 31 26 21 17 14 12 10 9 7 ====

Fy=46

ERW

2 1/4 x 2 1/4 1/8 3.48 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

94 88 84 79 74 68 61 54 47 39 32 27 23 20 17 15 13 ====

81 76 73 69 64 60 54 49 42 36 29 25 21 18 16 14 12 11 ====

67 63 61 58 54 50 46 41 36 31 26 22 18 16 14 12 11 10 ====

52 49 47 45 42 39 36 33 29 25 21 18 15 13 11 10 9 8 7 ====

36 34 33 31 29 27 25 23 21 18 15 13 11 9 8 7 6 6 5 ====

43 39 37 35 32 29 25 21 17 14 12 10 8 7 6 ====

30 27 26 24 22 20 18 16 13 10 9 7 6 5 5 4 ====

48 44 41 37 33 29 24 18 14 12 10 8 7 ====

38 35 32 30 27 23 20 15 12 10 8 7 6 ====

26 24 23 21 19 17 14 12 9 7 6 5 4 4 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10

6 4

3.39 3.77 1.05 1.35 0.563

2.94 3.45 1.08 1.28 0.515

2.44 3.02 1.11 1.21 0.451

1.89 2.46 1.14 1.15 0.367

1.30 1.78 1.17 1.10 0.266

2.35 1.82 0.879 1.61 0.272

1.97 1.63 0.908 1.51 0.243

1.54 1.35 0.937 1.43 0.202

1.07 0.998 0.965 1.34 0.149

1.74 1.13 0.805 1.73 0.169

1.37 0.952 0.835 1.62 0.142

0.96 0.712 0.863 1.52 0.106

Note: Double Horizontal Line indicates k l/r limit of 200.

12

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/4 5.41 0.233 2x2 3/16 4.32 0.174 1/8 3.05 0.116 1 3/4 x 1 3/4 3/16 3.68 0.174 1 5/8 x 1 5/8 3/16 3.36 1/8 2.42 1 1/2 x 1 1/2 3/16 3.04 0.174 1/8 2.20 0.116 3/16 2.40 0.174 0.174 0.116 Fy = 46 ksi 26 22 19 16 13 9 7 5 4 ==== 18 16 14 12 10 7 5 4 3 3 ====

Fy=46

ERW

1 1/4 x 1 1/4 1/8 1.78 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

42 37 34 30 26 21 16 12 10 8 6 ====

33 30 27 24 21 18 13 10 8 7 5 5 ====

23 21 19 17 15 13 10 8 6 5 4 4 ====

28 25 22 19 16 12 9 7 5 4 ====

23 20 17 14 10 7 5 4 ====

17 14 13 10 8 5 4 3 2 ====

18 15 12 8 5 3 3 ====

14 11 9 6 4 3 2 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10

6 4

1.51 0.745 0.703 2.03 0.111

1.19 0.640 0.732 1.86 0.096

0.84 0.486 0.761 1.73 0.073

1.02 0.405 0.630 2.20 0.060

0.93 0.312 0.579 2.42 0.047

0.67 0.246 0.608 2.21 0.037

0.84 0.235 0.528 2.68 0.035

0.61 0.188 0.556 2.43 0.028

0.67 0.121 0.425 3.46 0.018

0.49 0.101 0.454 3.03 0.015

Note: Double Horizontal Line indicates k l/r limit of 200.

13

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 103.30 0.465* 20 x 12 3/8 78.52 0.349* 5/16 65.87 0.291* 5/8 110.30 0.581 1/2 89.68 20 x 8 3/8 68.31 5/16 57.36 0.291* 1/2 76.07 0.465* 20 x 4 3/8 58.10 0.349* 0.465* 0.349* Fy = 46 ksi 660 651 647 641 636 629 623 616 608 600 592 582 571 560 548 536 523 510 496 483 468 454 439 424 408 392 375 358 341 323 305 286 269 254 239 226 214 203 193 183 442 437 434 431 427 424 420 416 411 407 402 397 391 386 380 374 367 360 353 346 339 331 322 314 305 295 285 274 263 251 238 224 211 199 187 177 168 159 151 143

Fy=46

y

x

x

y

ERW

5/16 48.86 0.291*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

761 755 751 747 743 739 734 730 724 719 714 708 702 696 689 683 675 667 658 649 640 631 621 612 602 592 581 571 560 549 538 526 515 503 491 479 467 454 441 428

517 513 511 509 506 503 500 497 494 491 488 484 480 477 473 469 464 460 456 451 446 441 436 431 426 420 415 409 403 397 391 384 377 371 364 356 349 341 333 325

406 403 402 400 398 396 394 391 389 387 384 382 379 376 373 370 367 364 360 357 354 350 346 342 339 334 330 326 322 317 313 308 303 298 293 288 282 277 271 265

836 823 815 806 797 787 776 765 753 741 728 715 701 686 671 656 640 624 607 589 571 553 534 515 495 475 454 432 410 388 365 342 322 303 286 270 256 243 230 219

343 339 337 334 332 329 326 323 320 317 313 310 306 302 298 293 289 284 279 274 268 263 257 251 245 238 231 224 216 208 199 190 180 170 160 151 143 136 129 123

558 543 533 522 509 494 474 453 431 408 383 357 330 301 270 239 212 189 169 153 139 126 116 106 98 90 84 78 ====

370 361 356 349 342 334 325 316 305 294 282 268 253 236 217 194 172 153 138 124 113 103 94 86 79 73 68 63 ====

282 276 272 268 263 257 251 245 237 230 221 212 202 191 178 164 147 131 118 106 97 88 80 74 68 63 58 54 51 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

28.3 1550 705 1.48 4.99 0.183 0.241 231 105

21.5 1200 547 1.48 5.04 0.179 0.236 179 81.7

18.1 1010 464 1.48 5.07 0.179 0.234 151 69.3

30.3 1440 338 2.06 3.34 0.210 0.359 215 50.5

24.6 1190 283 2.05 3.39 0.207 0.348 178 42.3

18.7 926 222 2.04 3.44 0.202 0.337 138 33.2

15.7 786 189 2.04 3.47 0.200 0.332 117 28.2

20.9 838 58.7 3.78 1.68 0.249 0.712 125 8.77

16.0 657 47.6 3.72 1.73 0.244 0.672 98.1 7.11

13.4 560 41.2 3.69 1.75 0.239 0.650 83.6 6.15

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

14

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 93.34 0.581 1/2 76.07 0.465 18 x 6 3/8 58.10 0.349* 5/16 48.86 0.291* 1/4 39.43 0.233* 1/2 89.68 16 x 12 3/8 68.31 5/16 57.36 0.291* 5/8 93.34 0.581 1/2 76.07 0.465 16 x 8 3/8 58.10 0.465 0.349* Fy = 46 ksi 679 672 668 663 658 654 648 643 637 631 625 619 612 605 598 591 584 576 568 560 552 544 535 526 517 508 499 489 479 469 459 449 439 428 417 406 395 383 372 360 493 488 486 483 481 478 475 472 468 465 461 457 453 449 445 441 436 431 427 422 416 411 406 400 394 388 381 374 367 359 352 344 336 328 320 312 303 295 286 277

Fy=46

y

x

x

y

ERW

5/16 48.86 0.291*

0.349*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

709 693 683 673 661 648 635 620 605 589 572 554 536 517 497 476 455 433 410 386 361 336 310 285 262 242 225 209 195 182 171 160 151 142 134 126 120 114 108 102

577 564 556 548 538 528 518 506 494 481 468 454 440 425 409 393 376 358 340 322 302 282 262 241 222 205 190 177 165 154 144 135 127 120 113 107 101 96 91 87

395 388 384 380 376 371 365 359 353 346 339 332 324 316 307 297 287 276 265 252 237 223 208 192 177 163 152 141 131 123 115 108 101 96 90 85 81 76 73 69

304 299 297 293 290 287 283 279 274 270 265 259 254 248 242 235 228 221 213 205 196 186 176 164 151 140 130 121 113 105 99 92 87 82 77 73 69 66 62 59

221 218 216 214 212 209 207 204 201 198 195 191 188 184 180 175 171 166 161 156 150 144 138 131 123 115 106 99 92 86 81 76 71 67 63 60 57 54 51 48

388 384 382 381 379 376 374 372 369 367 364 361 358 355 352 349 345 342 338 335 331 327 323 319 315 310 306 301 296 291 286 281 276 270 265 259 253 247 240 234

709 697 691 683 675 666 657 647 637 626 615 603 591 578 565 552 538 523 509 493 478 462 445 428 411 393 374 356 336 316 297 278 262 247 233 220 208 197 187 178

577 567 562 556 549 543 535 527 519 511 502 492 483 473 462 451 440 429 417 405 392 380 367 353 339 325 311 296 280 265 249 233 219 207 195 184 175 165 157 149

419 413 410 407 403 399 395 391 386 381 376 370 364 358 352 345 338 331 322 313 303 294 284 274 264 253 242 231 220 208 196 184 173 163 154 145 138 130 124 118

325 321 319 317 314 311 308 305 301 298 294 290 286 282 277 272 267 262 257 251 245 239 233 226 219 212 204 195 186 177 167 157 148 139 131 124 117 111 106 100

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10

6

25.7 923 158 2.42 2.48 0.251 0.488 138 23.6

20.9 770 134 2.40 2.53 0.244 0.468 115 20.0

16.0 602 106 2.38 2.58 0.239 0.453 89.9 15.8

13.4 513 91.3 2.37 2.61 0.235 0.440 76.6 13.6

10.8 419 75.1 2.36 2.63 0.232 0.431 62.6 11.2

24.6 904 581 1.25 4.86 0.218 0.254 135 86.8

18.7 702 452 1.25 4.91 0.213 0.248 105 67.5

15.7 595 384 1.24 4.94 0.211 0.245 88.9 57.3

25.7 815 274 1.72 3.27 0.252 0.375 122 40.9

20.9 679 230 1.72 3.32 0.246 0.363 101 34.3

16.0 531 181 1.71 3.37 0.241 0.354 79.3 27.0

13.4 451 155 1.71 3.40 0.238 0.346 67.3 23.1

ay, ÷ 10 6

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

15

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 62.46 0.465 16 x 4 3/8 47.90 0.349* 5/16 40.35 0.291* 5/8 93.34 1/2 76.07 14 x 10 3/8 58.10 0.349 5/16 48.86 0.291* 0.581 0.465 Fy = 46 ksi 709 700 694 688 682 676 669 661 653 645 637 628 619 609 599 589 579 568 557 546 534 522 510 498 485 472 459 445 431 417 402 387 372 357 341 325 308 292 278 264 577 569 565 560 555 550 544 538 532 526 519 512 505 497 489 481 473 464 456 447 437 428 418 408 398 388 377 366 355 344 333 321 309 297 284 271 258 245 233 221

Fy=46

y

x

x

y

ERW

1/4 39.43 0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

475 457 446 434 420 405 388 371 352 332 311 289 266 241 215 190 168 150 135 121 110 100 92 84 78 72 67 ====

342 333 328 321 313 305 296 286 275 260 245 229 212 194 176 156 139 124 111 100 91 83 76 69 64 59 55 51 ====

264 257 253 248 243 237 231 224 216 208 199 189 178 165 151 135 119 106 95 86 78 71 65 60 55 51 47 44 ====

442 436 433 429 425 421 417 413 408 403 398 393 387 381 376 370 363 357 350 344 337 330 322 315 307 299 292 283 275 267 258 249 240 231 222 212 202 192 182 173

347 343 341 339 336 334 331 328 325 322 319 316 312 308 305 301 297 292 288 283 278 274 268 263 258 252 245 239 232 225 218 210 203 195 188 180 172 163 155 147

258 255 254 252 250 249 247 245 243 241 238 236 234 231 228 226 223 220 217 214 210 207 203 200 196 192 188 184 180 175 171 166 161 156 151 145 139 133 126 120

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 17.2 455 47.0 3.11 1.65 0.302 0.732 67.9 7.02 13.2 360 38.3 3.07 1.71 0.293 0.689 53.8 5.72 11.1 308 33.2 3.05 1.73 0.288 0.669 46.0 4.96 25.7 687 407 1.30 3.98 0.262 0.316 103 60.8 20.9 573 341 1.30 4.04 0.255 0.306 85.6 50.9 16.0 447 267 1.29 4.09 0.251 0.300 66.8 39.9 13.4 380 227 1.29 4.12 0.247 0.295 56.7 33.9 10.8 310 186 1.29 4.14 0.244 0.290 46.3 27.8

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

16

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 76.33 0.581 1/2 62.46 0.465 3/8 47.90 0.349 14 x 6 5/16 40.35 0.291* 1/4 32.63 0.233* 3/16 24.73 5/8 67.82 1/2 55.66 0.465 3/8 42.79 0.349 14 x 4 5/16 36.10 0.291* 1/4 29.23 0.174* 0.581 Fy = 46 ksi 139 137 135 134 133 131 130 128 126 124 122 119 117 115 112 109 106 103 100 97 93 89 85 81 76 71 66 61 57 53 50 47 44 41 39 37 35 33 31 30 516 496 484 469 453 436 417 397 375 353 328 303 276 248 218 192 170 151 136 123 111 101 93 85 78 73 ====

Fy=46

y

x

x

y

ERW

3/16 22.18 0.174*

0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

580 566 558 549 539 528 517 505 492 478 464 449 434 418 401 383 365 347 327 307 286 265 243 223 206 190 176 164 153 143 134 126 118 111 105 99 94 89 85 80

475 464 457 450 442 434 425 415 405 394 383 371 359 346 332 319 304 290 274 258 242 225 207 190 176 162 150 140 130 122 114 107 101 95 90 85 80 76 72 69

364 356 351 346 340 334 327 320 312 304 296 287 278 268 258 248 237 226 215 203 191 178 165 152 140 130 120 112 104 97 91 86 80 76 72 68 64 61 58 55

284 279 276 273 269 266 261 257 252 247 242 236 230 224 217 209 201 192 182 172 162 152 141 130 120 111 103 95 89 83 78 73 69 65 61 58 55 52 49 47

208 205 203 201 198 196 193 190 187 184 180 176 172 168 163 159 154 148 143 137 130 123 116 107 99 91 85 79 74 69 64 60 57 54 50 48 45 43 41 39

422 407 397 386 373 359 345 329 312 294 275 256 235 213 189 167 148 132 118 107 97 88 81 74 68 63 59 ====

326 314 307 298 289 279 268 257 244 231 217 203 187 171 154 137 121 108 97 87 79 72 66 61 56 52 48 45 ====

252 245 241 236 231 225 218 211 203 195 185 173 160 147 133 119 105 94 84 76 69 63 58 53 49 45 42 39 ====

183 179 176 173 170 166 161 157 152 146 140 133 126 118 109 98 87 78 70 63 57 52 48 44 40 37 35 32 30 ====

120 118 116 114 112 110 108 105 102 99 96 92 88 84 79 74 68 61 55 49 45 41 37 34 32 29 27 25 23 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

21.0 478 124 1.96 2.43 0.308 0.508 71.4 18.5

17.2 402 105 1.96 2.48 0.300 0.491 60.0 15.7

13.2 317 84.1 1.94 2.53 0.291 0.471 47.3 12.6

11.1 271 72.3 1.94 2.55 0.287 0.461 40.5 10.8

8.96 222 59.6 1.93 2.58 0.283 0.451 33.2 8.90

6.76 170 45.9 1.92 2.61 0.278 0.442 25.4 6.85

18.7 373 47.1 2.81 1.59 0.351 0.794 55.7 7.03

15.3 317 41.1 2.78 1.64 0.338 0.745 47.3 6.14

11.8 252 33.6 2.74 1.69 0.328 0.702 37.6 5.02

9.92 216 29.2 2.72 1.72 0.321 0.679 32.3 4.36

8.03 178 24.4 2.70 1.74 0.316 0.658 26.6 3.64

6.06 137 19.0 2.69 1.77 0.310 0.638 20.5 2.84

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

17

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 69.27 0.465 3/8 53.00 0.349 12 x 10 5/16 44.60 0.291* 1/4 36.03 0.233* 5/8 76.33 1/2 62.46 3/8 47.90 0.349 12 x 8 5/16 40.35 0.291* 1/4 32.63 0.233* 0.581 0.465 Fy = 46 ksi 580 570 564 557 550 543 535 527 518 509 499 489 478 467 456 445 433 420 407 394 381 367 353 338 323 307 291 275 258 242 226 212 200 188 178 168 159 151 143 136 475 467 462 457 451 445 439 432 425 418 410 402 394 385 376 367 357 347 337 326 315 304 293 281 269 257 244 231 218 204 191 179 169 159 150 142 134 127 121 115

Fy=46

y

x

x

y

ERW

3/16 24.73 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

524 517 513 509 504 499 494 489 483 477 470 464 457 450 443 435 427 419 411 403 394 385 376 367 357 348 338 327 317 307 296 285 273 262 250 238 226 214 203 193

403 398 395 391 388 384 380 376 371 367 362 357 352 347 341 335 330 324 317 311 305 298 291 284 277 270 262 254 247 239 230 222 214 205 196 187 178 169 160 152

334 330 328 326 323 321 318 314 311 307 303 299 295 290 286 281 276 271 266 261 255 250 244 238 232 226 220 214 207 201 194 187 180 173 166 158 151 143 136 129

249 247 246 244 243 241 240 238 236 233 231 228 226 223 220 217 214 211 208 205 201 198 194 190 186 182 178 173 169 164 159 153 148 142 136 130 124 118 112 106

364 358 355 351 347 342 337 332 327 322 316 310 304 297 290 283 276 269 261 253 245 237 229 220 211 202 192 183 173 163 152 143 134 127 119 113 107 101 96 91

304 299 297 294 292 288 284 280 275 271 266 261 256 250 245 239 233 227 220 214 207 200 193 186 178 171 163 155 147 138 130 122 114 108 102 96 91 86 82 78

226 223 221 219 217 215 213 210 208 205 202 199 196 193 189 186 182 178 174 170 165 161 156 151 145 139 133 127 120 113 107 100 94 89 84 79 75 71 67 64

151 150 149 148 147 145 144 143 141 140 138 136 134 132 130 128 126 123 121 118 116 113 110 107 104 101 97 94 90 86 81 77 72 68 64 61 57 54 52 49

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

19.0 395 298 1.15 3.96 0.289 0.319 59.0 44.5

14.6 310 234 1.15 4.01 0.283 0.312 46.3 34.9

12.2 264 200 1.15 4.04 0.277 0.305 39.4 29.9

9.90 216 164 1.15 4.07 0.275 0.302 32.3 24.5

21.0 396 210 1.37 3.16 0.318 0.400 59.1 31.4

17.2 333 177 1.37 3.21 0.310 0.389 49.7 26.4

13.2 262 140 1.37 3.27 0.302 0.377 39.1 20.9

11.1 224 120 1.37 3.29 0.297 0.370 33.5 17.9

8.96 184 98.8 1.36 3.32 0.292 0.363 27.5 14.8

6.76 140 75.7 1.36 3.35 0.290 0.357 20.9 11.3

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

18

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 67.82 0.581 1/2 55.66 0.465 3/8 42.79 0.349 12 x 6 5/16 36.10 0.291* 1/4 29.23 0.233* 3/16 22.18 5/8 59.32 1/2 48.85 0.465 3/8 37.69 0.349 12 x 4 5/16 31.84 0.291* 1/4 25.82 0.174* 0.581 Fy = 46 ksi 134 132 131 129 128 126 124 123 121 118 116 114 111 109 106 103 100 97 93 89 86 81 77 72 66 61 57 53 49 46 43 41 38 36 34 32 30 29 27 26 453 435 424 411 397 381 364 346 327 307 285 262 238 213 186 164 145 129 116 105 95 87 79 73 67 62 ====

Fy=46

y

x

x

y

ERW

3/16 19.63 0.174*

0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

516 504 496 488 479 469 459 448 436 424 411 397 383 368 353 337 321 304 286 267 248 229 209 192 177 164 152 141 132 123 115 108 102 96 90 85 81 77 73 ====

422 412 407 400 393 385 377 368 359 349 339 328 317 305 293 280 267 254 240 225 210 195 179 164 151 140 130 120 112 105 98 92 87 82 77 73 69 65 62 59

326 318 314 309 304 298 292 285 278 271 263 255 246 238 229 219 209 199 189 178 167 155 143 132 121 112 104 97 90 84 79 74 70 66 62 59 55 53 50 47

271 266 263 260 255 251 246 240 234 228 222 215 208 201 194 186 178 169 161 152 143 133 123 113 105 97 90 83 78 73 68 64 60 57 53 50 48 45 43 41

200 197 195 193 190 187 185 181 178 175 171 167 163 158 153 148 143 137 131 124 117 109 101 93 86 79 74 69 64 60 56 52 49 46 44 41 39 37 35 34

373 359 350 340 328 316 303 289 274 258 241 223 204 184 163 144 127 113 102 92 83 76 69 64 59 54 50 ====

287 277 270 263 254 245 236 225 214 202 190 177 163 148 133 117 104 93 83 75 68 62 57 52 48 44 41 ====

239 232 228 222 215 207 199 191 182 172 162 151 140 128 116 103 91 81 73 66 60 54 50 46 42 39 36 33 ====

175 171 168 164 161 157 152 147 142 136 130 123 115 105 95 85 75 67 60 54 49 45 41 38 35 32 30 28 ====

116 113 111 110 107 105 102 100 97 93 90 86 82 77 72 66 59 53 47 43 39 35 32 30 27 25 23 22 20 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 18.7 321 106 1.74 2.39 0.350 0.529 47.9 15.8 15.3 271 91.1 1.72 2.44 0.339 0.504 40.5 13.6 11.8 215 72.9 1.72 2.49 0.329 0.486 32.1 10.9 9.92 184 62.8 1.71 2.52 0.323 0.474 27.5 9.38 8.03 151 51.9 1.71 2.54 0.319 0.464 22.5 7.75 6.06 116 40.0 1.70 2.57 0.313 0.455 17.3 5.97 16.4 245 40.3 2.47 1.57 0.402 0.814 36.6 6.02 13.5 209 35.3 2.43 1.62 0.388 0.765 31.2 5.27 10.4 168 28.9 2.41 1.67 0.371 0.720 25.1 4.32 8.76 144 25.2 2.39 1.70 0.365 0.695 21.5 3.76 7.10 119 21.0 2.38 1.72 0.358 0.676 17.8 3.14 5.37 91.8 16.4 2.37 1.75 0.351 0.655 13.7 2.45

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

19

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 12 x 3 1/2 3/8 36.41 0.349 5/16 30.78 0.291* 5/16 29.72 0.291* 12 x 3 1/4 24.12 0.233* 3/16 18.35 0.174* 1/4 22.42 12 x 2 3/16 17.08 1/2 55.66 0.465 3/8 42.79 0.349 10 x 8 5/16 36.10 0.291 1/4 29.23 0.233* 0.174* Fy = 46 ksi 150 141 135 127 117 105 89 71 56 46 38 32 27 23 ==== 98 93 89 85 79 73 66 57 45 37 30 26 22 19 ====

Fy=46

y

x

x

y

ERW

3/16 22.18 0.174*

0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

276 264 257 248 238 228 216 204 191 177 162 147 130 113 98 86 76 68 61 55 50 46 42 38 ====

231 223 217 210 202 194 184 174 163 151 139 126 112 98 85 75 66 59 53 48 44 40 36 33 ====

223 214 207 198 188 178 166 154 141 126 111 95 81 70 61 53 47 42 38 34 31 ====

163 157 153 148 143 137 130 123 114 104 92 79 68 58 51 45 40 35 32 29 26 ====

107 103 101 98 96 92 89 84 80 75 69 62 54 46 40 35 31 28 25 23 21 19 ====

422 415 411 406 401 395 390 383 377 370 363 356 348 340 332 323 314 305 296 286 276 266 255 245 233 222 210 198 186 174 163 153 144 135 128 121 114 108 103 98

326 320 317 313 309 305 301 296 291 286 281 275 270 263 257 251 244 237 230 223 215 208 200 192 183 175 166 157 148 138 130 122 114 108 102 96 91 86 82 78

274 269 266 263 260 257 253 249 245 241 237 232 227 222 217 212 206 200 195 189 182 176 169 163 156 149 141 134 126 119 111 104 98 92 87 82 78 74 70 67

217 214 212 210 208 206 203 201 198 195 192 188 184 180 176 172 168 163 158 154 149 144 138 133 127 122 116 110 104 98 92 86 81 76 72 68 64 61 58 55

145 143 142 141 140 139 138 136 135 133 132 130 128 126 124 122 119 117 114 111 108 105 102 99 95 92 88 84 80 75 70 66 62 58 55 52 49 47 44 42

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 10.0 156 21.3 2.71 1.46 0.385 0.822 23.3 3.18 8.46 134 18.6 2.68 1.48 0.379 0.796 20.0 2.78 8.17 124 13.1 3.08 1.27 0.395 0.935 18.5 1.96 6.63 103 11.1 3.05 1.29 0.386 0.896 15.4 1.66 5.02 79.6 8.72 3.02 1.32 0.378 0.864 11.9 1.30 6.17 86.9 4.40 4.44 0.845 0.426 1.40 13.0 0.657 4.67 67.4 3.55 4.36 0.872 0.416 1.32 10.1 0.530 15.3 214 151 1.19 3.14 0.357 0.405 32.0 22.5 11.8 169 120 1.19 3.19 0.349 0.393 25.2 17.9 9.92 145 103 1.19 3.22 0.342 0.385 21.7 15.4 8.03 119 84.7 1.19 3.25 0.337 0.379 17.8 12.6 6.06 91.4 65.1 1.18 3.28 0.332 0.372 13.6 9.72

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

20

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 59.32 0.581 1/2 48.85 0.465 3/8 37.69 0.349 10 x 6 5/16 31.84 0.291 1/4 25.82 3/16 19.63 3/8 35.13 0.349 5/16 29.72 0.291 10 x 5 1/4 24.12 0.233* 0.233* 0.174* Fy = 46 ksi 191 188 186 183 181 178 175 171 167 163 158 153 148 143 138 132 126 120 114 107 100 93 86 79 73 68 63 58 54 51 48 45 42 39 37 35 33 32 30 29 129 127 126 124 123 121 119 117 115 113 110 108 105 102 99 96 93 89 85 81 77 72 67 61 57 52 49 45 42 39 37 35 32 31 29 27 26 24 23 22

Fy=46

y

x

x

y

ERW

3/16 18.35 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

453 442 435 427 419 411 401 391 380 369 358 345 332 319 305 291 276 260 244 228 210 192 176 162 149 138 128 119 111 103 97 91 86 81 76 72 68 64 61 ====

373 364 358 352 346 339 331 323 315 306 297 287 277 266 255 243 231 219 206 193 179 165 151 139 128 118 110 102 95 89 83 78 73 69 65 62 58 55 53 ====

287 280 276 272 267 262 256 250 244 237 230 223 215 207 199 190 182 172 163 153 143 132 121 111 103 95 88 82 76 71 67 63 59 56 52 50 47 44 42 40

242 236 233 229 225 221 216 211 206 200 195 189 182 176 169 162 154 147 139 131 122 114 105 96 89 82 76 71 66 62 58 54 51 48 45 43 40 38 36 35

267 259 255 249 244 237 231 224 216 208 199 191 181 172 162 151 140 129 117 105 96 87 80 73 67 62 58 54 50 47 44 41 39 36 ====

225 219 215 211 206 201 195 189 183 176 169 162 154 146 138 129 120 110 101 91 82 75 69 63 58 54 50 46 43 40 38 35 33 31 ====

178 174 172 169 166 163 159 154 149 144 138 132 126 120 113 106 99 92 84 76 69 63 57 53 49 45 42 39 36 34 32 30 28 26 25 ====

120 117 116 114 112 110 108 106 103 100 98 94 91 88 84 80 75 70 65 59 54 49 45 41 38 35 32 30 28 26 25 23 22 20 19 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

16.4 201 89.4 1.50 2.34 0.408 0.550 30.0 13.4

13.5 171 76.8 1.49 2.39 0.395 0.527 25.5 11.5

10.4 137 61.8 1.49 2.44 0.380 0.505 20.5 9.23

8.76 118 53.3 1.49 2.47 0.371 0.493 17.6 7.96

7.10 96.9 44.1 1.48 2.49 0.366 0.483 14.5 6.59

5.37 74.6 34.1 1.48 2.52 0.360 0.472 11.1 5.09

9.67 120 40.6 1.72 2.05 0.403 0.595 17.9 6.06

8.17 104 35.2 1.72 2.07 0.393 0.580 15.5 5.26

6.63 85.8 29.3 1.71 2.10 0.386 0.566 12.8 4.38

5.02 66.2 22.7 1.71 2.13 0.379 0.553 9.89 3.39

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

21

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 50.81 0.581 1/2 42.05 0.465 3/8 32.58 0.349 10 x 4 5/16 27.59 0.291 1/4 22.42 0.233* 3/16 17.08 10 x 3 1/2 3/16 16.44 3/8 30.03 0.349 5/16 25.46 0.291 10 x 3 1/4 20.72 0.233* 15.80 0.174* 0.174* Fy = 46 ksi 110 108 106 104 101 99 96 93 90 86 83 78 74 68 63 56 50 44 40 36 32 30 27 25 23 21 20 18 ==== 106 103 101 98 96 93 90 86 82 78 73 68 62 54 47 42 37 33 29 27 24 22 20 18 17 ====

Fy=46

y

x

x

y

ERW

3/16 0.174*

1/8 10.71 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

386 371 361 350 337 324 309 293 276 258 239 219 198 175 153 134 119 106 95 86 78 71 65 60 55 ====

320 308 300 291 281 270 259 246 233 219 204 188 171 154 135 119 105 94 84 76 69 63 57 53 49 45 ====

248 238 233 226 219 211 202 193 183 173 161 150 138 125 111 98 87 77 69 63 57 52 47 43 40 37 34 ====

209 202 197 192 186 179 172 164 156 148 139 129 119 108 97 86 76 68 61 55 50 45 41 38 35 32 30 ====

166 161 158 155 151 146 140 134 128 121 114 107 99 90 81 72 64 57 51 46 42 38 35 32 30 27 25 24 ====

228 216 208 199 189 177 165 151 137 122 105 89 76 65 57 50 44 39 35 32 ====

193 184 177 169 161 152 142 131 119 106 93 79 67 58 50 44 39 35 31 28 ====

153 147 143 138 132 124 116 108 99 89 78 67 57 49 43 38 34 30 27 24 22 ====

101 97 95 92 89 86 82 78 73 67 60 53 45 39 34 30 26 23 21 19 17 ====

57 55 54 53 51 49 48 46 44 41 38 35 32 27 24 21 19 17 15 13 12 11 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 14.0 149 33.4 2.11 1.54 0.470 0.838 22.3 4.99 11.6 129 29.4 2.09 1.59 0.450 0.789 19.3 4.39 8.97 104 24.3 2.07 1.64 0.431 0.738 15.5 3.63 7.59 90.1 21.2 2.06 1.67 0.421 0.716 13.5 3.17 6.17 74.7 17.7 2.05 1.70 0.413 0.697 11.2 2.64 4.67 57.8 13.9 2.04 1.72 0.404 0.672 8.63 2.08 4.50 53.6 10.3 2.28 1.51 0.420 0.765 8.00 1.54 8.27 88.0 12.4 2.66 1.22 0.470 1.00 13.1 1.85 7.01 76.3 11.0 2.63 1.25 0.459 0.956 11.4 1.64 5.70 63.6 9.28 2.62 1.28 0.448 0.921 9.50 1.39 4.32 49.4 7.33 2.60 1.30 0.437 0.884 7.38 1.09 2.93 34.2 5.16 2.57 1.33 0.428 0.852 5.11 0.771

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

22

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 27.48 0.349 5/16 23.34 0.291 10 x 2 1/4 19.02 0.233* 3/16 14.53 0.174* 5/8 59.32 1/2 48.85 3/8 37.69 0.349 9x7 5/16 31.84 0.291 1/4 25.82 0.233 0.581 0.465 Fy = 46 ksi 453 443 438 431 425 417 410 401 393 383 374 364 353 342 331 319 307 295 282 269 255 241 226 211 195 181 168 156 145 136 127 119 112 106 100 94 89 85 80 76 373 365 360 355 350 344 338 331 324 317 309 301 293 284 275 266 256 246 236 225 214 203 191 179 167 154 143 133 124 116 109 102 96 90 85 81 76 72 69 65

Fy=46

y

x

x

y

ERW

3/16 19.63 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

209 190 176 160 142 121 98 76 60 49 40 34 29 ====

177 162 151 138 123 106 88 69 54 44 36 31 26 ====

140 131 124 114 102 89 75 59 47 38 31 26 23 ====

92 87 83 78 73 67 59 48 38 31 25 21 18 16 ====

287 281 278 274 270 266 261 256 251 245 239 233 227 221 214 207 200 192 184 176 168 160 151 142 133 123 114 106 99 93 87 81 77 72 68 64 61 58 55 52

242 237 234 231 228 224 220 216 212 207 202 197 192 187 181 175 169 163 157 150 143 136 129 122 114 106 98 91 85 80 75 70 66 62 59 55 52 50 47 45

196 192 190 187 185 182 179 175 172 168 164 160 156 152 148 143 138 133 128 123 117 112 106 100 94 88 81 76 71 66 62 58 55 51 48 46 43 41 39 37

136 134 132 131 130 128 126 124 122 120 118 116 114 111 108 106 103 100 96 93 89 86 81 77 72 68 63 59 55 51 48 45 42 40 37 35 34 32 30 29

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 7.58 71.7 4.69 3.91 0.786 0.529 1.62 10.7 0.700 6.43 62.6 4.24 3.84 0.812 0.514 1.52 9.35 0.633 5.24 52.5 3.67 3.78 0.837 0.499 1.43 7.84 0.548 3.98 41.0 2.97 3.72 0.864 0.485 1.34 6.12 0.444 16.4 174 117 1.22 2.68 0.424 0.491 26.0 17.5 13.5 149 100 1.22 2.73 0.408 0.473 22.3 14.9 10.4 119 80.4 1.22 2.78 0.393 0.453 17.8 12.0 8.76 102 69.2 1.21 2.81 0.386 0.443 15.2 10.3 7.10 84.1 57.2 1.21 2.84 0.380 0.434 12.6 8.54 5.37 64.7 44.1 1.21 2.87 0.373 0.426 9.66 6.59

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

23

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 50.81 0.581 1/2 42.05 0.465 3/8 32.58 0.349 9x5 5/16 27.59 0.291 1/4 22.42 0.233 3/16 17.08 0.174* Fy = 46 ksi 117 114 113 111 109 107 105 102 100 97 94 90 87 83 79 75 70 65 59 53 48 44 40 37 34 32 29 27 25 24 22 21 20 18 17 ==== 1/2 35.24 0.465 3/8 27.48 0.349 9x3 5/16 23.34 0.291 1/4 19.02 0.233

Fy=46

y

x

x

y

ERW

3/16 14.53 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

386 375 367 359 350 340 329 318 306 293 279 265 250 235 218 201 184 165 148 134 121 111 101 93 86 79 73 68 64 59 56 52 ====

320 311 305 298 291 283 274 265 256 245 235 223 211 199 186 173 159 144 129 117 106 96 88 81 75 69 64 60 56 52 49 46 ====

248 240 236 231 226 220 214 207 200 192 184 176 167 158 148 138 128 117 106 96 87 79 72 67 61 57 53 49 46 43 40 37 35 ====

209 204 200 196 191 186 181 175 169 163 157 150 142 135 127 119 110 101 92 83 75 68 63 57 53 49 45 42 39 37 34 32 30 29 ====

170 166 163 159 156 152 148 143 138 133 128 123 117 111 104 98 91 84 77 69 63 57 52 48 44 41 38 35 33 31 29 27 25 24 ====

269 254 244 232 219 204 189 171 153 133 112 94 80 69 60 53 47 42 38 ====

209 198 191 182 172 162 150 138 125 110 95 80 68 59 51 45 40 36 32 29 ====

177 168 162 155 147 139 129 119 108 97 84 71 61 52 46 40 35 32 28 26 ====

145 137 133 127 121 114 107 99 90 81 71 61 52 45 39 34 30 27 24 22 20 ====

98 94 92 89 86 82 78 74 69 63 55 48 41 35 31 27 24 21 19 17 16 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 14.0 133 51.9 1.60 1.92 0.474 0.674 19.9 7.75 11.6 115 45.2 1.60 1.97 0.454 0.642 17.2 6.75 8.97 92.5 36.8 1.59 2.03 0.436 0.609 13.8 5.50 7.59 79.8 32.0 1.58 2.05 0.428 0.593 11.9 4.78 6.17 66.1 26.6 1.58 2.08 0.420 0.580 9.87 3.97 4.67 51.1 20.7 1.57 2.10 0.411 0.564 7.63 3.09 9.74 80.8 13.2 2.47 1.16 0.542 1.11 12.1 1.97 7.58 66.3 11.2 2.43 1.21 0.514 1.02 9.90 1.67 6.43 57.7 9.88 2.42 1.24 0.501 0.976 8.62 1.48 5.24 48.2 8.38 2.40 1.27 0.489 0.938 7.20 1.25 3.98 37.6 6.63 2.38 1.29 0.476 0.900 5.61 0.990

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

24

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 50.81 0.581 1/2 42.05 0.465 3/8 32.58 0.349 8x6 5/16 27.59 0.291 1/4 22.42 0.233 3/16 17.08 0.174* 5/8 42.30 1/2 35.24 3/8 27.48 0.349 8x4 5/16 23.34 0.291 1/4 19.02 0.233 14.53 0.581 0.465 Fy = 46 ksi 323 310 301 292 281 269 256 243 228 213 196 179 161 141 123 108 96 85 77 69 63 57 52 48 44 ==== 269 258 252 244 235 226 216 205 194 181 168 155 140 125 109 96 85 76 68 61 56 51 46 43 39 36 ====

Fy=46

y

x

x

y

ERW

3/16

1/8 9.86 0.116*

0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

386 377 371 364 357 349 341 332 322 312 302 291 279 267 255 242 229 215 200 185 170 155 141 130 120 111 103 95 89 83 78 73 69 65 61 58 55 ====

320 312 308 302 296 290 283 276 269 261 252 243 234 225 215 204 193 182 171 159 146 134 122 112 104 96 89 83 77 72 67 63 59 56 53 50 47 45 ====

248 242 238 234 230 225 220 215 209 203 197 190 183 176 169 161 153 145 136 128 118 109 100 91 84 78 72 67 63 59 55 51 48 46 43 41 38 36 35 ====

209 205 202 198 195 191 186 182 177 172 167 162 156 150 144 137 131 124 117 109 102 94 86 79 73 67 62 58 54 50 47 44 42 39 37 35 33 31 30 28

170 166 164 161 158 155 152 148 145 141 136 132 127 123 118 113 107 102 96 90 84 78 71 66 60 56 52 48 45 42 39 37 35 33 31 29 28 26 25 24

123 121 119 118 116 114 112 110 108 105 103 100 97 93 90 86 82 78 74 69 65 60 55 51 47 43 40 37 35 33 30 29 27 25 24 23 21 20 19 18

209 201 196 191 184 177 170 162 153 144 134 124 114 102 91 80 71 63 56 51 46 42 39 35 33 30 ====

177 171 167 162 157 151 145 138 131 123 115 107 98 89 79 69 61 55 49 44 40 37 33 31 28 26 24 ====

145 139 136 132 128 123 118 113 108 102 95 89 82 74 66 58 52 46 41 37 34 31 28 26 24 22 21 ====

104 101 99 97 95 92 90 86 82 78 73 68 63 58 52 46 41 36 33 29 27 24 22 20 19 17 16 15 ====

60 58 57 56 55 54 52 51 49 47 45 43 41 38 35 32 28 25 23 20 19 17 15 14 13 12 11 10 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 14.0 114 72.2 1.26 2.27 0.491 0.582 17.0 10.8 11.6 98.2 62.5 1.25 2.32 0.473 0.557 14.7 9.33 8.97 79.1 50.6 1.25 2.38 0.454 0.532 11.8 7.56 7.59 68.3 43.8 1.25 2.40 0.445 0.520 10.2 6.54 6.17 56.6 36.4 1.25 2.43 0.436 0.509 8.45 5.44 4.67 43.7 28.2 1.24 2.46 0.427 0.497 6.53 4.21 11.7 81.9 26.6 1.75 1.51 0.571 0.880 12.2 3.97 9.74 71.7 23.6 1.74 1.56 0.543 0.825 10.7 3.52 7.58 58.7 19.6 1.73 1.61 0.517 0.773 8.77 2.93 6.43 51.0 17.2 1.72 1.63 0.504 0.748 7.62 2.57 5.24 42.5 14.4 1.72 1.66 0.493 0.728 6.35 2.15 3.98 33.1 11.3 1.71 1.69 0.481 0.704 4.94 1.69 2.70 22.9 7.90 1.70 1.71 0.472 0.684 3.42 1.18

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

25

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 31.84 0.465 3/8 24.93 0.349 5/16 21.21 0.291 8x3 1/4 17.32 0.233 3/16 13.25 0.174* 1/8 9.01 0.116* Fy = 46 ksi 53 52 50 49 48 46 44 42 39 37 34 30 26 22 19 17 15 14 12 11 10 ==== 3/8 22.37 0.349 5/16 19.08 0.291 8x2 1/4 15.62 0.233 3/16 11.97 0.174*

Fy=46

y

x

x

y

ERW

1/8 8.16 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

243 229 220 209 197 184 170 154 137 119 100 84 71 62 54 47 42 37 33 ====

190 180 173 165 156 146 136 124 112 99 85 71 61 52 46 40 36 32 28 26 ====

161 153 147 141 134 126 117 108 98 87 75 64 54 47 41 36 32 28 25 23 ====

132 125 120 115 110 103 96 89 81 72 63 54 46 39 34 30 27 24 21 19 ====

94 91 88 86 82 79 74 69 63 57 50 43 36 31 27 24 21 19 17 15 14 ====

171 155 143 130 115 98 79 60 48 39 32 27 ====

145 132 123 112 100 86 71 55 43 35 29 24 21 ====

119 108 101 93 83 72 61 48 38 30 25 21 18 ====

85 80 76 71 65 57 48 39 31 25 20 17 15 13 ====

47 45 43 41 38 35 32 27 22 18 15 12 11 9 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 8.81 58.5 11.7 2.24 1.15 0.602 1.13 8.74 1.75 6.88 48.5 9.94 2.21 1.20 0.567 1.04 7.24 1.48 5.85 42.4 8.81 2.19 1.23 0.552 0.996 6.33 1.32 4.77 35.5 7.49 2.18 1.25 0.537 0.955 5.30 1.12 3.63 27.8 5.94 2.16 1.28 0.522 0.917 4.15 0.887 2.46 19.3 4.20 2.14 1.31 0.510 0.879 2.88 0.627 6.18 38.2 3.72 3.20 0.776 0.647 1.66 5.70 0.556 5.26 33.7 3.38 3.16 0.801 0.624 1.56 5.03 0.505 4.30 28.5 2.94 3.11 0.827 0.604 1.46 4.26 0.439 3.28 22.4 2.39 3.06 0.853 0.586 1.37 3.35 0.357 2.23 15.7 1.72 3.02 0.879 0.568 1.30 2.34 0.257

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

26

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 42.30 0.581 1/2 35.24 0.465 3/8 27.48 0.349 7x5 5/16 23.34 0.291 1/4 19.02 0.233 3/16 14.53 0.174 1/8 9.86 0.116* Fy = 46 ksi 64 63 62 61 60 59 58 56 55 53 52 50 48 46 44 42 39 36 33 30 27 25 23 21 19 18 16 15 14 13 12 12 11 10 ==== 1/2 31.84 0.465 3/8 24.93 0.349 5/16 21.21 0.291 7x4 1/4 17.32 0.233

Fy=46

y

x

x

y

ERW

3/16 13.25 0.174

1/8 9.01 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

323 313 306 299 291 282 273 263 252 241 229 217 204 190 176 161 145 130 116 105 95 87 79 73 67 62 58 54 50 47 44 ====

269 261 255 250 243 236 229 221 212 203 194 184 173 162 151 139 127 114 102 92 84 76 70 64 59 55 51 47 44 41 38 ====

209 203 199 195 190 185 179 173 167 160 153 145 138 129 121 112 103 93 84 75 68 62 57 52 48 45 41 39 36 34 31 29 ====

177 172 169 165 161 157 152 147 142 137 131 125 118 111 104 97 89 81 73 66 60 55 50 46 42 39 36 34 31 29 27 26 24 ====

145 140 138 135 132 128 125 121 116 112 107 102 97 92 86 80 74 68 61 55 50 46 42 38 35 33 30 28 26 25 23 22 20 ====

110 107 105 103 100 98 95 92 89 86 82 78 75 71 66 62 58 53 48 43 39 36 33 30 28 26 24 22 21 19 18 17 16 15 ====

243 233 227 220 212 203 194 184 173 162 150 137 123 109 95 84 74 66 59 53 48 44 40 37 34 ====

190 183 178 173 167 160 153 146 138 129 120 111 101 90 79 70 62 55 49 45 40 37 34 31 28 26 ====

161 155 151 147 142 137 131 125 118 111 104 96 88 79 70 61 54 49 44 39 36 32 30 27 25 23 ====

132 127 124 120 116 112 107 103 97 92 86 80 73 66 59 52 46 41 37 33 30 27 25 23 21 20 18 ====

100 97 94 92 89 86 82 78 74 70 66 61 56 51 46 41 36 32 29 26 24 21 20 18 17 15 14 ====

58 56 55 54 53 52 50 48 47 45 43 40 38 35 32 28 25 22 20 18 17 15 14 13 12 11 10 9 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 11.7 69.3 40.5 1.31 1.86 0.591 0.722 10.3 6.05 9.74 60.6 35.6 1.30 1.91 0.563 0.684 9.05 5.32 7.58 49.5 29.2 1.30 1.96 0.536 0.649 7.39 4.36 6.43 43.0 25.5 1.30 1.99 0.523 0.630 6.42 3.81 5.24 35.8 21.3 1.30 2.02 0.512 0.615 5.35 3.18 3.98 27.9 16.6 1.30 2.05 0.499 0.599 4.17 2.48 2.70 19.3 11.6 1.29 2.07 0.490 0.582 2.88 1.73 8.81 50.6 20.7 1.56 1.53 0.609 0.851 7.56 3.09 6.88 41.8 17.3 1.55 1.58 0.576 0.795 6.24 2.58 5.85 36.4 15.2 1.55 1.61 0.563 0.770 5.44 2.27 4.77 30.5 12.8 1.54 1.64 0.547 0.745 4.55 1.91 3.63 23.8 10.0 1.54 1.66 0.534 0.726 3.55 1.49 2.46 16.6 7.03 1.54 1.69 0.519 0.700 2.48 1.05

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

27

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 28.43 0.465 3/8 22.37 0.349 5/16 19.08 0.291 7x3 1/4 15.62 0.233 3/16 11.97 0.174 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 217 205 197 187 176 164 151 137 121 105 88 74 63 54 47 41 37 33 29 ==== 171 161 155 148 140 131 121 111 100 88 75 63 54 46 40 35 31 28 25 ==== 145 137 132 126 120 112 104 96 86 77 66 55 47 41 35 31 28 25 22 20 ==== 119 113 108 104 99 93 86 80 72 65 56 48 41 35 30 27 24 21 19 17 ==== 91 86 83 79 75 71 66 61 56 50 44 38 32 28 24 21 19 17 15 14 12 ==== 52 50 49 47 46 44 42 39 37 34 31 27 23 20 17 15 13 12 11 10 9 ==== 190 184 180 176 172 167 162 156 150 144 137 130 123 115 107 99 90 81 73 66 60 54 50 46 42 39 36 34 31 29 27 26 ==== 161 157 154 150 146 142 138 133 128 123 118 112 106 99 93 86 79 71 64 58 52 48 44 40 37 34 32 29 27 26 24 23 ==== 132 128 125 123 120 116 113 109 105 101 97 92 87 82 77 71 66 60 54 48 44 40 37 34 31 29 27 25 23 22 20 19 18 ==== 1/8 8.16 0.116* 3/8 24.93 0.349 5/16 21.21 0.291 6x5 1/4 17.32 0.233

Fy=46

y

x

x

y

ERW

3/16 13.25 0.174

100 97 95 93 91 89 86 83 81 77 74 71 67 63 59 55 51 47 42 38 34 31 29 26 24 22 21 19 18 17 16 15 14 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 7.88 40.7 10.2 2.00 1.14 0.678 1.16 6.08 1.52 6.18 34.0 8.70 1.98 1.19 0.636 1.07 5.08 1.30 5.26 29.9 7.74 1.97 1.21 0.616 1.02 4.47 1.16 4.30 25.2 6.59 1.96 1.24 0.597 0.979 3.76 0.984 3.28 19.8 5.24 1.94 1.26 0.580 0.939 2.96 0.782 2.23 13.8 3.71 1.93 1.29 0.566 0.902 2.06 0.554 6.88 33.9 25.5 1.15 1.92 0.609 0.675 5.06 3.81 5.85 29.6 22.3 1.15 1.95 0.593 0.656 4.42 3.33 4.77 24.7 18.7 1.15 1.98 0.579 0.638 3.69 2.79 3.63 19.3 14.6 1.15 2.01 0.564 0.622 2.88 2.18

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

28

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 28.43 0.465 3/8 22.37 0.349 5/16 19.08 0.291 6x4 1/4 15.62 0.233 3/16 11.97 0.174 1/8 8.16 1/2 25.03 3/8 19.82 0.349 5/16 16.96 0.291 6x3 1/4 13.91 0.233 10.70 0.116* 0.465 Fy = 46 ksi 56 54 53 52 51 49 48 46 44 42 40 38 35 32 28 25 22 20 18 16 14 13 12 11 10 9 9 ==== 192 181 173 164 154 143 132 119 105 90 75 63 53 46 40 35 31 28 ====

Fy=46

y

x

x

y

ERW

3/16

1/8 7.31 0.116*

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

217 209 203 196 189 181 172 163 153 143 131 120 107 94 82 72 64 57 51 46 42 38 35 32 29 ====

171 164 160 155 149 143 137 130 122 114 106 97 88 78 68 60 53 48 43 38 35 32 29 27 25 ====

145 140 136 132 127 122 117 111 105 99 92 85 77 69 61 53 47 42 38 34 31 28 26 24 22 20 ====

119 114 111 108 104 101 96 92 87 82 76 71 64 58 51 45 40 36 32 29 26 24 22 20 18 17 ====

91 87 85 83 80 77 74 70 67 63 59 54 50 45 40 35 31 28 25 23 20 19 17 16 14 13 12 ====

151 143 137 131 123 115 107 97 87 76 64 54 46 40 35 30 27 24 22 ====

129 122 117 112 106 99 92 84 76 67 57 48 41 35 31 27 24 21 19 ====

106 100 97 92 88 82 77 70 64 56 49 41 35 30 26 23 21 18 16 15 ====

81 77 74 71 67 63 59 55 50 44 39 33 28 24 21 19 16 15 13 12 ====

50 48 47 45 43 41 39 37 34 31 27 23 20 17 15 13 12 10 9 8 8 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 7.88 33.9 17.7 1.38 1.50 0.697 0.890 5.06 2.64 6.18 28.3 14.9 1.38 1.55 0.655 0.830 4.23 2.23 5.26 24.8 13.1 1.38 1.58 0.636 0.803 3.70 1.96 4.30 20.9 11.1 1.37 1.61 0.617 0.775 3.12 1.66 3.28 16.4 8.76 1.37 1.63 0.600 0.749 2.45 1.31 2.23 11.4 6.15 1.36 1.66 0.587 0.725 1.70 0.918 6.95 26.8 8.65 1.76 1.12 0.778 1.21 4.00 1.29 5.48 22.7 7.47 1.74 1.17 0.724 1.10 3.39 1.12 4.68 20.1 6.66 1.74 1.19 0.699 1.05 3.00 0.995 3.84 17.0 5.70 1.73 1.22 0.678 1.01 2.54 0.851 2.93 13.4 4.55 1.72 1.25 0.656 0.966 2.00 0.679 2.00 9.43 3.23 1.71 1.27 0.636 0.929 1.41 0.482

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

29

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 17.27 0.349 5/16 14.83 0.291 6x2 1/4 12.21 0.233 3/16 9.42 0.174 1/8 6.46 1/2 25.03 3/8 19.82 0.349 5x4 5/16 16.96 0.291 1/4 13.91 0.233 0.116* 0.465 Fy = 46 ksi 44 41 39 37 34 31 26 21 17 14 11 9 8 7 ==== 192 184 178 172 166 158 150 142 133 123 113 102 90 78 68 60 53 47 43 38 35 32 29 27 ====

Fy=46

y

x

x

y

ERW

3/16 10.70 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

132 119 110 99 87 74 58 45 35 29 24 20 ====

113 103 95 87 77 65 53 41 32 26 22 18 15 ====

93 85 79 72 64 56 46 36 28 23 19 16 14 ====

71 65 61 56 50 44 37 29 23 19 15 13 11 ====

151 145 141 137 132 126 120 114 107 100 92 84 76 67 58 51 45 41 36 33 30 27 25 23 21 ====

129 124 121 117 113 108 103 98 92 86 80 73 66 59 51 45 40 36 32 29 26 24 22 20 18 ====

106 102 99 96 93 89 85 81 77 72 67 61 56 50 44 38 34 30 27 25 22 20 19 17 16 15 ====

81 78 76 74 71 68 65 62 59 55 52 48 44 39 35 30 27 24 22 19 18 16 15 14 12 12 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

4.78 17.1 2.75 2.49 0.759 0.839 1.74 2.55 0.411

4.10 15.3 2.52 2.46 0.784 0.804 1.63 2.28 0.376

3.37 13.1 2.21 2.43 0.809 0.772 1.52 1.96 0.330

2.58 10.5 1.80 2.42 0.835 0.737 1.43 1.57 0.269

1.77 7.42 1.31 2.38 0.861 0.716 1.35 1.11 0.196

6.95 21.2 14.8 1.20 1.46 0.820 0.939 3.17 2.21

5.48 17.9 12.6 1.19 1.52 0.765 0.870 2.67 1.88

4.68 15.8 11.1 1.19 1.54 0.741 0.843 2.36 1.66

3.84 13.4 9.46 1.19 1.57 0.716 0.812 2.00 1.41

2.93 10.6 7.48 1.19 1.60 0.691 0.783 1.58 1.12

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

30

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 21.63 0.465 3/8 17.27 0.349 5/16 14.83 0.291 5x3 1/4 12.21 0.233 3/16 9.42 0.174 Fy = 46 ksi 71 67 65 62 59 55 51 47 43 38 33 28 24 20 18 16 14 12 11 10 ==== 1/8 6.46 0.116* 1/4 11.36 0.233 5 x 2 1/2 3/16 8.78 0.174

Fy=46

y

x

x

y

ERW

1/8 6.03 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

166 156 149 141 132 123 112 100 88 74 61 52 44 38 33 29 26 23 ====

132 124 119 113 107 99 92 83 74 64 53 45 38 33 29 25 22 20 18 ====

113 107 103 98 92 86 80 73 65 57 48 40 34 30 26 23 20 18 16 ====

93 88 85 81 76 71 66 61 54 48 41 34 29 25 22 19 17 15 14 ====

48 46 44 43 41 38 36 33 30 27 23 20 17 15 13 11 10 9 8 7 ====

87 81 77 72 67 61 54 48 40 32 27 23 19 17 14 13 ====

67 62 59 56 52 47 43 37 32 26 21 18 15 13 12 10 9 ====

44 42 40 38 36 33 30 26 23 19 16 13 11 10 8 7 7 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 6.02 16.4 7.14 1.52 1.09 0.918 1.26 2.45 1.07 4.78 14.1 6.23 1.50 1.14 0.848 1.15 2.11 0.930 4.10 12.6 5.59 1.50 1.17 0.813 1.10 1.88 0.835 3.37 10.7 4.81 1.49 1.19 0.787 1.05 1.60 0.718 2.58 8.53 3.85 1.49 1.22 0.756 1.01 1.27 0.575 1.77 6.03 2.75 1.48 1.25 0.734 0.965 0.900 0.411 3.14 9.40 3.13 1.73 0.998 0.835 1.25 1.40 0.467 2.41 7.51 2.53 1.72 1.02 0.802 1.19 1.12 0.378 1.65 5.34 1.82 1.71 1.05 0.772 1.13 0.797 0.272

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

31

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 14.72 0.349 5/16 12.70 0.291 5x2 1/4 10.51 0.233 3/16 8.15 0.174 1/8 5.61 0.116* 3/8 14.72 0.349 5/16 12.70 0.291 Fy = 46 ksi 97 92 88 83 78 73 67 61 54 46 39 32 28 24 21 18 16 14 ==== 4x3 1/4 10.51 0.233 3/16 8.15 0.174 1/8 5.61 0.116 5/16 11.64 0.291

Fy=46

y

x

x

y

ERW

4 x 2 1/2 1/4 9.66 0.233 3/16 7.51 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

113 102 94 84 74 62 48 37 29 24 20 16 ====

97 88 81 74 65 55 44 34 27 22 18 15 ====

80 73 68 62 55 47 39 30 24 19 16 13 11 ====

62 56 53 48 43 38 31 25 19 16 13 11 9 ====

41 39 36 34 30 27 22 18 14 11 9 8 7 6 ====

113 106 102 96 91 84 77 69 61 52 43 36 31 27 23 20 18 16 ====

80 76 73 69 65 61 56 51 46 40 34 28 24 21 18 16 14 13 11 ====

62 58 56 54 51 48 44 40 36 32 27 23 19 17 15 13 11 10 9 ====

43 40 39 37 35 33 31 28 25 22 19 16 14 12 10 9 8 7 6 6 ====

89 83 78 73 67 61 53 46 37 30 25 21 18 15 13 ====

74 69 65 61 56 51 45 39 32 26 22 18 16 13 12 10 ====

57 53 50 47 44 40 36 31 26 21 18 15 13 11 9 8 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 4.09 10.3 2.27 2.13 0.746 0.993 1.80 1.54 0.339 3.52 9.34 2.09 2.11 0.771 0.942 1.68 1.39 0.312 2.91 8.08 1.84 2.10 0.796 0.900 1.58 1.21 0.275 2.24 6.50 1.51 2.07 0.822 0.862 1.48 0.971 0.225 1.54 4.65 1.10 2.06 0.848 0.828 1.40 0.694 0.164 4.09 7.92 5.00 1.26 1.11 1.03 1.23 1.18 0.747 3.52 7.13 4.52 1.26 1.13 0.987 1.17 1.06 0.675 2.91 6.15 3.91 1.25 1.16 0.946 1.12 0.918 0.584 2.24 4.93 3.16 1.25 1.19 0.909 1.06 0.736 0.472 1.54 3.52 2.27 1.25 1.21 0.875 1.02 0.526 0.339 3.23 6.13 2.89 1.46 0.946 1.05 1.40 0.915 0.432 2.67 5.32 2.53 1.45 0.973 1.00 1.32 0.794 0.378 2.06 4.30 2.06 1.44 0.999 0.958 1.25 0.642 0.308

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

32

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 12.17 0.349 5/16 10.58 0.291 4x2 1/4 8.81 0.233 3/16 6.87 0.174 1/8 4.75 3/8 12.17 5/16 10.58 0.291 3 1/2 x 2 1/2 1/4 8.81 0.233 3/16 6.87 0.174 0.116 0.349 Fy = 46 ksi 36 33 31 28 25 22 18 15 11 9 8 6 5 ==== 94 86 81 75 69 61 53 44 35 29 24 20 17 15 13 ====

Fy=46

y

x

x

y

ERW

1/8 4.75 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

94 84 77 69 60 49 38 29 23 19 15 13 ====

81 73 68 61 53 45 35 27 21 17 14 12 ====

67 61 57 51 45 39 31 24 19 15 13 11 ====

52 48 44 40 36 31 25 20 16 13 10 9 7 ====

81 75 71 66 61 54 48 40 32 26 22 18 16 13 12 ====

67 63 59 55 51 46 41 35 29 23 19 16 14 12 10 ====

52 49 46 43 40 36 32 28 23 19 16 13 11 10 8 7 ====

36 33 32 30 28 25 23 20 17 14 11 10 8 7 6 5 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

3.39 5.59 1.79 1.77 0.727 1.21 1.89 0.835 0.267

2.94 5.12 1.66 1.76 0.752 1.15 1.77 0.765 0.248

2.44 4.49 1.48 1.74 0.778 1.09 1.65 0.670 0.221

1.89 3.66 1.22 1.73 0.804 1.03 1.55 0.547 0.182

1.30 2.65 0.898 1.72 0.830 0.981 1.45 0.396 0.134

3.39 4.74 2.75 1.31 0.902 1.25 1.54 0.708 0.411

2.94 4.34 2.53 1.31 0.929 1.19 1.45 0.648 0.378

2.44 3.79 2.23 1.30 0.956 1.13 1.37 0.566 0.333

1.89 3.09 1.82 1.30 0.983 1.07 1.30 0.461 0.272

1.30 2.23 1.33 1.29 1.01 1.02 1.22 0.333 0.199

Note: Double Horizontal Line indicates k l/r limit of 200.

33

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/16 9.51 0.291 1/4 7.96 0.233 3 x 2 1/2 3/16 6.23 0.174 1/8 4.33 0.116 5/16 8.45 0.291 1/4 7.11 0.233 Fy = 46 ksi 54 49 45 41 36 30 23 18 14 11 9 8 ==== 3x2 3/16 5.59 0.174 1/8 3.90 0.116 1/4 6.26 0.233 3/16 4.96

Fy=46

y

x

x

y

ERW

3 x 1 1/2 1/8 3.48 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

73 67 63 59 54 48 42 35 28 23 19 16 13 11 10 ====

61 57 53 50 46 41 36 31 25 20 17 14 12 10 9 ====

47 44 42 39 36 32 29 25 20 16 14 11 10 8 7 6 ====

33 31 29 27 25 23 21 18 15 12 10 8 7 6 5 5 ====

65 58 53 48 41 34 26 20 16 13 11 9 ====

43 39 36 32 29 24 20 15 12 10 8 7 ====

30 27 25 23 20 18 14 11 9 7 6 5 4 ====

48 41 36 30 22 16 11 9 7 ====

38 33 29 24 19 13 10 8 6 ====

26 23 21 18 14 10 8 6 5 4 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 2.64 2.91 2.17 1.16 0.907 1.36 1.52 0.435 0.324 2.21 2.57 1.93 1.15 0.935 1.29 1.43 0.384 0.288 1.71 2.11 1.59 1.15 0.962 1.22 1.34 0.315 0.237 1.19 1.54 1.16 1.15 0.990 1.16 1.28 0.230 0.173 2.35 2.38 1.23 1.39 0.724 1.48 1.91 0.355 0.184 1.97 2.12 1.11 1.38 0.750 1.39 1.77 0.317 0.166 1.54 1.76 0.931 1.37 0.777 1.31 1.65 0.263 0.139 1.07 1.30 0.692 1.37 0.804 1.23 1.55 0.194 0.103 1.74 1.68 0.541 1.76 0.558 1.55 2.41 0.251 0.081 1.37 1.42 0.466 1.75 0.584 1.45 2.20 0.212 0.070 0.96 1.06 0.355 1.73 0.610 1.36 2.03 0.158 0.053

Note: Double Horizontal Line indicates k l/r limit of 200.

34

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/16 4.32 0.174 3x1 1/8 3.05 0.116 1/4 5.41 0.233 2 1/2 x 1 1/2 3/16 4.32 0.174 1/8 3.05 0.116 Fy = 46 ksi 23 20 18 15 12 9 6 5 4 ==== 3/16 3.68 0.174 2 x 1 1/2 1/8 2.63 0.116 3/16 3.04 0.174

Fy=46

y

x

x

y

ERW

2x1 1/8 2.20 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

33 25 18 11 7 5 ====

23 18 14 9 6 4 ====

42 35 31 25 19 13 9 7 6 ====

33 28 25 21 16 11 8 6 5 ====

28 24 21 17 13 9 7 5 4 ====

20 17 15 13 10 7 5 4 3 ====

23 17 12 7 5 3 ====

17 13 10 6 4 3 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 1.19 1.07 0.172 2.49 0.380 1.67 3.46 0.160 0.026 0.84 0.817 0.138 2.43 0.405 1.54 3.04 0.122 0.021 1.51 1.03 0.447 1.52 0.544 1.83 2.53 0.154 0.067 1.19 0.881 0.389 1.50 0.571 1.69 2.29 0.132 0.058 0.84 0.668 0.299 1.49 0.597 1.57 2.11 0.100 0.045 1.02 0.494 0.312 1.26 0.553 2.06 2.45 0.074 0.047 0.72 0.383 0.244 1.25 0.580 1.88 2.21 0.057 0.036 0.84 0.349 0.112 1.77 0.364 2.41 3.75 0.052 0.017 0.61 0.280 0.092 1.74 0.389 2.18 3.32 0.042 0.014

Note: Double Horizontal Line indicates k l/r limit of 200.

35

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 127.37 0.581 1/2 103.30 0.465 16 x 16 3/8 78.52 0.349* 5/16 65.87 0.291* 5/8 110.36 0.581 14 x 14 1/2 89.68 0.465 3/8 68.31 0.349* Fy = 50 ksi 550 546 544 542 539 537 534 531 528 525 521 517 512 507 502 497 491 486 480 474 468 462 456 450 443 437 430 423 416 409 402 394 387 379 371 364 356 347 339 331 5/16 57.36 0.291* 5/8 93.34 0.581 1/2 76.07 0.465 12 x 12 3/8 58.10 0.349 48.86

Fy=50

ERW

5/16 0.291*

1/4 39.43 0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1050 1040 1040 1030 1030 1020 1010 1010 1000 993 986 979 971 964 955 947 939 930 921 912 903 893 883 873 863 853 842 831 820 809 798 786 775 763 751 739 726 713 701 688

849 842 838 834 829 824 820 815 809 804 798 792 786 780 774 767 760 753 746 739 731 724 716 708 700 692 683 675 666 657 648 639 629 620 610 601 591 581 570 560

587 583 581 579 577 575 573 570 568 565 562 559 556 553 550 547 543 540 536 533 529 525 521 517 512 508 503 499 494 489 484 479 474 468 463 457 451 444 436 428

444 442 441 439 438 436 435 433 431 429 427 425 423 421 419 417 414 412 410 407 404 402 399 396 393 390 387 384 381 377 374 370 367 363 359 355 351 347 343 339

909 900 895 889 884 878 871 865 858 851 843 836 828 819 811 802 793 784 774 765 755 745 734 724 713 702 691 679 667 656 643 631 619 606 593 580 566 553 539 525

738 731 727 722 718 713 708 703 697 691 685 679 673 666 659 652 645 638 630 622 614 606 598 589 581 572 563 554 544 535 525 515 505 495 485 474 463 452 441 430

417 414 412 411 409 407 405 403 401 399 396 394 392 389 386 384 381 378 375 371 368 365 361 358 354 350 346 342 338 334 329 325 320 315 310 305 299 293 286 279

771 762 757 751 745 739 732 725 718 710 702 694 686 677 668 658 649 639 628 618 607 596 585 573 562 550 537 525 512 499 486 472 459 445 430 416 401 386 370 354

627 620 615 611 606 601 596 590 584 578 572 565 559 552 544 537 529 521 513 505 496 487 478 469 460 450 441 431 420 410 399 389 378 367 355 344 332 320 307 295

480 474 471 468 464 461 456 452 448 443 439 434 428 423 418 412 406 400 394 388 381 375 368 361 354 347 339 332 324 316 309 300 292 284 275 266 257 248 239 230

388 385 383 381 379 377 374 372 369 366 363 360 357 354 350 346 341 336 331 325 320 315 309 303 297 291 285 279 273 266 260 253 246 239 232 225 217 210 202 194

275 273 272 271 269 268 267 265 263 262 260 258 256 254 252 249 247 245 242 239 237 234 231 228 225 222 218 215 211 208 204 200 195 191 186 182 177 171 165 158

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

35.0 1370 6.25 0.204 205

28.3 1130 6.31 0.200 169

21.5 873 6.37 0.197 130

18.1 739 6.39 0.196 110

30.3 896 5.44 0.237 134

24.6 743 5.49 0.232 111

18.7 577 5.55 0.227 86.2

15.7 490 5.58 0.224 73.2

25.7 548 4.62 0.281 81.8

20.9 457 4.68 0.274 68.2

16.0 357 4.73 0.269 53.3

13.4 304 4.76 0.264 45.4

10.8 248 4.79 0.261 37.0

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

36

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 76.33 0.581 1/2 62.46 0.465 3/8 47.90 0.349 10 x 10 5/16 40.35 0.291 1/4 32.63 0.233* 3/16 24.73 0.174* Fy = 50 ksi 162 160 159 158 158 156 155 154 153 152 150 149 148 146 144 143 141 139 137 135 133 131 129 127 124 122 119 116 113 110 107 103 100 96 91 87 82 78 74 70 1/2 55.66 0.465 3/8 42.79 0.349 9x9 5/16 36.10 0.291 1/4 29.23 0.233

Fy=50

ERW

3/16 22.18 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

630 621 615 609 603 597 590 582 574 566 558 549 539 530 520 510 499 488 477 466 454 442 429 417 404 390 377 363 349 334 319 304 288 272 257 243 230 218 207 197

516 508 504 500 495 489 484 478 471 465 458 451 443 436 428 420 411 402 393 384 375 365 355 345 335 324 313 302 291 279 267 255 243 230 217 205 194 184 175 166

396 390 387 384 380 376 372 367 362 357 352 347 341 336 330 324 317 311 304 297 290 283 275 268 260 252 244 236 227 218 209 200 191 181 172 162 154 146 138 131

333 328 326 323 319 316 313 309 305 301 296 292 287 283 278 272 267 262 256 250 245 238 232 226 219 213 206 199 192 185 177 170 162 154 146 138 131 124 117 112

254 251 250 248 246 245 243 241 238 236 234 231 228 225 222 219 216 212 207 203 198 193 188 183 178 173 167 162 156 150 145 138 132 126 119 113 107 101 96 92

459 451 447 442 437 432 426 419 413 406 399 391 384 376 367 359 350 341 331 322 312 301 291 280 269 258 246 234 222 209 197 184 173 163 154 146 138 131 124 118

354 348 345 341 337 333 329 324 319 314 309 303 297 291 285 278 272 265 258 251 243 235 228 219 211 203 194 185 176 166 157 147 138 130 123 116 110 104 99 94

298 293 290 287 284 280 277 273 269 264 260 255 250 245 240 235 229 224 218 212 206 199 193 186 179 172 165 157 150 142 134 126 118 112 105 99 94 89 85 81

241 237 235 232 230 227 224 221 218 214 211 207 203 199 195 191 186 181 177 172 167 162 157 151 146 140 134 128 122 116 110 103 97 91 86 81 77 73 69 66

154 153 152 151 150 148 147 146 144 143 141 140 138 136 134 132 130 128 125 123 120 118 115 112 109 105 102 98 93 89 84 79 74 70 66 62 59 56 53 51

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

21.0 304 3.80 0.345 45.4

17.2 256 3.86 0.336 38.2

13.2 202 3.92 0.327 30.2

11.1 172 3.94 0.323 25.7

8.96 141 3.97 0.318 21.1

6.76 108 4.00 0.313 16.1

15.3 182 3.45 0.378 27.2

11.8 145 3.51 0.366 21.7

9.92 124 3.54 0.360 18.5

8.03 102 3.56 0.354 15.2

6.06 78.2 3.59 0.349 11.7

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

37

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 59.32 0.581 1/2 48.85 0.465 3/8 37.69 0.349 8x8 5/16 31.84 0.291 1/4 25.82 0.233 3/16 19.63 0.174* 5/8 50.81 0.581 1/2 42.05 0.465 3/8 32.58 0.349 7x7 5/16 27.59 0.291 1/4 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 492 482 477 471 464 457 449 441 432 423 414 404 394 383 372 361 349 337 324 311 298 284 270 255 240 224 209 194 181 169 158 148 140 132 124 117 111 105 100 95 405 397 393 388 382 377 370 364 357 350 342 334 326 317 308 299 290 280 270 259 249 238 226 215 203 190 177 165 154 144 135 126 119 112 106 100 95 90 85 81 312 306 303 299 295 291 286 281 276 271 265 259 253 246 240 233 226 218 211 203 195 187 178 170 161 151 142 132 123 115 108 101 95 90 85 80 76 72 68 65 263 258 255 252 249 245 241 237 233 228 224 219 214 208 203 197 191 185 179 172 166 159 152 145 137 129 122 114 106 99 93 87 82 77 73 69 65 62 59 56 213 209 207 204 202 199 196 192 189 185 181 178 173 169 165 160 155 151 145 140 135 130 124 118 112 106 100 93 87 81 76 71 67 63 60 56 53 51 48 46 146 144 143 142 141 139 138 136 135 133 131 129 127 124 122 119 117 114 111 107 103 99 95 90 86 81 77 72 67 63 59 55 52 49 46 43 41 39 37 35 420 410 405 398 391 384 376 367 358 348 338 328 317 306 294 281 269 256 242 228 213 198 183 168 155 143 133 123 115 107 101 94 89 84 79 75 71 67 64 60 348 340 336 330 325 319 312 305 298 290 282 274 265 256 246 236 226 216 205 193 182 170 157 144 133 123 114 106 99 92 87 81 76 72 68 64 61 58 55 52 269 263 260 256 252 247 242 237 232 226 220 213 207 200 193 186 178 170 162 153 145 136 126 117 108 100 92 86 80 75 70 66 62 58 55 52 49 47 44 42 228 223 220 217 213 209 205 201 196 192 187 181 176 170 164 158 152 145 138 131 124 117 109 101 93 86 80 74 69 65 61 57 53 50 48 45 43 40 38 36 185 181 179 176 173 170 167 164 160 156 152 148 144 139 134 129 124 119 114 108 102 96 90 84 77 72 66 62 58 54 50 47 44 42 40 37 35 34 32 30

Fy=50

ERW

3/16 17.08 0.174*

22.42 0.233

137 135 134 132 131 129 127 124 121 118 115 112 109 106 102 98 95 91 87 82 78 74 69 64 59 55 51 47 44 41 39 36 34 32 30 29 27 26 24 23

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

16.4 146 2.99 0.449 21.8

13.5 125 3.04 0.432 18.7

10.4 99.6 3.10 0.418 14.9

8.76 85.6 3.13 0.409 12.8

7.10 70.7 3.15 0.402 10.6

5.37 54.4 3.18 0.395 8.12

14.0 93.3 2.58 0.525 13.9

11.6 80.5 2.63 0.504 12.0

8.97 64.9 2.69 0.484 9.69

7.59 56.1 2.72 0.474 8.38

6.17 46.5 2.75 0.464 6.94

4.67 36.0 2.77 0.454 5.38

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

38

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 42.30 0.581 1/2 35.24 0.465 3/8 27.48 0.349 6x6 5/16 23.34 0.291 1/4 19.02 0.233 3/16 14.53 1/8 9.86 3/8 24.93 0.349 5/16 21.21 0.291 5 1/2 x 5 1/2 1/4 17.32 0.233 3/16 13.25 0.174 0.116* Fy = 50 ksi 119 116 115 113 110 108 105 103 100 97 93 90 86 83 79 75 71 66 62 57 53 48 44 40 37 34 32 30 28 26 24 23 21 20 19 18 17 16 15 ==== 69 68 67 66 65 64 63 62 61 60 58 57 55 54 52 50 48 45 43 39 36 33 30 28 26 24 22 20 19 18 17 16 15 14 13 12 12 11 11 ====

Fy=50

ERW

1/8 9.01 0.116*

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

351 341 335 328 321 313 304 295 285 275 264 253 241 228 215 202 188 173 158 143 130 118 108 99 91 85 78 73 68 63 59 56 52 49 47 44 ====

292 284 279 274 268 262 255 247 240 231 223 214 204 194 184 173 162 150 138 126 114 104 95 87 80 74 69 64 60 56 52 49 46 43 41 39 37 ====

227 221 218 214 209 204 199 194 188 181 175 168 161 153 146 138 129 121 111 102 93 84 77 71 65 60 56 52 49 45 43 40 38 35 33 32 30 28 ====

193 188 185 181 178 174 169 165 160 155 149 143 138 131 125 118 111 104 96 89 81 74 67 62 57 53 49 45 42 40 37 35 33 31 29 27 26 25 ====

157 153 151 148 145 142 138 135 131 127 122 118 113 108 103 97 92 86 80 74 67 61 56 52 48 44 41 38 35 33 31 29 27 26 24 23 22 21 20 ====

206 200 197 192 188 183 177 172 165 159 152 145 138 130 122 113 104 95 86 77 70 64 58 54 49 46 42 39 37 34 32 30 28 27 ====

176 170 167 164 160 156 151 146 141 136 130 124 118 112 105 98 90 83 75 68 61 56 51 47 43 40 37 34 32 30 28 26 25 23 22 ====

143 139 137 134 131 127 124 120 116 111 107 102 97 92 86 81 75 69 62 56 51 46 42 39 36 33 31 29 27 25 23 22 21 19 18 ====

109 106 104 102 100 97 94 91 88 85 82 78 74 71 67 62 58 53 49 44 40 36 33 30 28 26 24 22 21 20 18 17 16 15 14 14 ====

66 65 64 63 62 61 60 58 57 56 54 52 50 48 46 43 40 37 34 31 28 25 23 21 20 18 17 16 15 14 13 12 11 11 10 9 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

11.7 55.1 2.17 0.637 8.23

9.74 48.2 2.23 0.606 7.20

7.58 39.4 2.28 0.577 5.88

6.43 34.3 2.31 0.562 5.12

5.24 28.6 2.34 0.550 4.27

3.98 22.3 2.37 0.535 3.33

2.70 15.5 2.39 0.523 2.31

6.88 29.7 2.08 0.637 4.44

5.85 25.9 2.11 0.621 3.87

4.77 21.7 2.13 0.604 3.24

3.63 17.0 2.16 0.587 2.54

2.46 11.8 2.19 0.573 1.76

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates K l/r limit of 200.

39

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 28.43 0.465 3/8 22.37 0.349 5/16 19.08 0.291 5x5 1/4 15.62 0.233 3/16 11.97 0.174 1/8 8.16 1/2 25.03 3/8 19.82 0.349 4 1/2 x 4 1/2 5/16 16.96 0.291 1/4 13.91 0.233 3/16 10.70 0.116* 0.465 Fy = 50 ksi 63 62 61 60 59 57 56 55 53 51 48 46 43 40 38 35 31 28 25 23 21 19 17 16 15 14 13 12 11 10 10 9 8 ==== 209 200 195 189 182 175 167 158 149 140 129 119 107 95 83 73 65 58 52 47 42 39 35 32 30 28 ====

Fy=50

ERW

1/8 7.31 0.116*

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

236 228 223 217 211 204 197 188 180 171 161 151 141 130 118 106 94 84 75 68 61 56 51 47 43 40 37 35 32 30 ====

185 179 175 171 166 161 155 149 143 136 129 121 113 105 96 87 78 69 62 56 51 46 42 39 36 33 31 29 27 25 23 ====

158 153 149 146 142 137 133 128 122 117 111 104 98 91 84 76 68 61 55 49 45 41 37 34 32 29 27 25 23 22 20 ====

129 125 122 119 116 113 109 105 101 96 91 86 81 76 70 64 57 51 46 42 38 34 31 29 27 25 23 21 20 18 17 16 ====

98 95 93 91 89 86 83 80 77 74 70 67 63 59 54 50 45 40 36 33 30 27 25 23 21 19 18 17 16 15 14 13 ====

164 158 154 150 145 139 133 127 120 113 105 97 89 80 70 62 55 49 44 40 36 33 30 28 25 23 22 ====

140 135 132 128 124 119 114 109 103 97 91 84 77 70 62 55 49 43 39 35 32 29 27 24 22 21 19 18 ====

115 111 108 105 102 98 94 90 86 81 76 70 65 59 53 47 41 37 33 30 27 25 23 21 19 18 16 15 ====

88 85 83 80 78 75 72 69 66 62 58 54 50 46 41 36 32 29 26 23 21 19 18 16 15 14 13 12 11 ====

60 58 57 55 53 52 50 47 45 43 40 38 35 32 29 26 23 20 18 16 15 14 12 11 11 10 9 8 8 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

7.88 26.0 1.82 0.758 3.88

6.18 21.7 1.87 0.712 3.24

5.26 19.0 1.90 0.692 2.84

4.30 16.0 1.93 0.672 2.39

3.28 12.6 1.96 0.651 1.88

2.23 8.80 1.99 0.634 1.31

6.95 18.0 1.61 0.869 2.69

5.48 15.3 1.67 0.806 2.28

4.68 13.5 1.70 0.780 2.02

3.84 11.4 1.73 0.758 1.70

2.93 9.02 1.75 0.731 1.35

2.00 6.35 1.78 0.709 0.948

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates K l/r limit of 200.

40

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 21.63 0.465 3/8 17.27 0.349 5/16 14.83 0.291 4x4 1/4 12.21 0.233 3/16 9.42 0.174 1/8 6.46 0.116 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 181 172 167 160 153 146 137 128 118 108 97 86 73 63 55 48 43 38 34 31 28 26 23 ==== 143 137 133 128 123 117 111 104 97 89 81 72 63 54 47 41 37 33 29 26 24 22 20 18 ==== 123 118 114 110 106 101 96 90 84 78 71 63 56 48 42 37 33 29 26 24 21 20 18 16 ==== 101 97 94 91 87 83 79 75 70 65 59 54 47 41 36 32 28 25 22 20 18 17 15 14 13 ==== 77 74 72 70 67 64 61 58 54 50 46 42 38 33 29 25 22 20 18 16 15 13 12 11 10 ==== 53 51 50 48 46 44 42 40 38 35 32 30 27 23 20 18 16 14 13 11 10 9 9 8 7 7 ==== 123 116 112 107 101 95 88 81 73 65 56 47 40 34 30 26 23 21 19 17 15 ==== 106 100 96 92 88 82 77 71 64 57 50 42 36 31 27 24 21 19 17 15 14 ==== 87 83 80 77 73 69 64 59 54 49 43 37 31 27 23 21 18 16 15 13 12 11 ==== 67 64 62 59 56 53 50 46 43 38 34 29 25 22 19 17 15 13 12 11 10 9 ==== 3/8 14.72 0.349 5/16 12.70 0.291 3 1/2 x 3 1/2 1/4 10.51 0.233 3/16 8.15 0.174

Fy=50

ERW

1/8 5.61 0.116

46 44 43 41 39 37 35 32 30 27 24 21 18 15 13 12 10 9 8 7 7 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

6.02 11.9 1.41 1.01 1.78

4.78 10.3 1.46 0.928 1.54

4.10 9.14 1.49 0.897 1.36

3.37 7.80 1.52 0.864 1.16

2.58 6.21 1.55 0.831 0.927

1.77 4.40 1.58 0.805 0.657

4.09 6.48 1.26 1.10 0.968

3.52 5.84 1.29 1.05 0.872

2.91 5.04 1.32 1.01 0.753

2.24 4.05 1.35 0.968 0.605

1.54 2.90 1.37 0.929 0.433

Note: Double Horizontal Line indicates K l/r limit of 200.

41

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 12.17 0.349 5/16 10.58 0.291 3x3 1/4 8.81 0.233 3/16 6.87 0.174 1/8 4.75 0.116 5/16 8.45 2 1/2 x 2 1/2 1/4 7.11 3/16 5.59 0.174 1/8 3.90 0.116 1/4 6.26 0.233 3/16 4.96 0.291 0.233 Fy = 50 ksi 71 65 60 55 50 44 37 29 23 19 16 13 11 10 ==== 59 54 51 47 43 38 32 26 21 17 14 12 10 9 7 ====

Fy=50

ERW

2 1/4 x 2 1/4 1/8 3.48 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

102 95 90 85 79 72 64 56 48 39 32 27 23 20 17 15 13 ====

88 82 79 74 69 63 57 50 43 36 29 25 21 18 16 14 12 11 ====

73 69 66 62 58 53 48 43 37 31 26 22 18 16 14 12 11 10 ====

57 53 51 48 45 42 38 34 30 25 21 18 15 13 11 10 9 8 7 ====

39 37 35 33 31 29 27 24 21 18 15 13 11 9 8 7 6 6 5 ====

46 43 40 37 34 30 26 22 17 14 12 10 8 7 6 ====

32 30 28 26 24 21 19 16 13 10 9 7 6 5 5 4 ====

52 47 44 40 35 30 24 18 14 12 10 8 7 ====

41 37 35 32 28 24 20 15 12 10 8 7 6 ====

29 26 25 23 20 18 15 12 9 7 6 5 4 4 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

3.39 3.77 1.05 1.35 0.563

2.94 3.45 1.08 1.28 0.515

2.44 3.02 1.11 1.21 0.451

1.89 2.46 1.14 1.15 0.367

1.30 1.78 1.17 1.10 0.266

2.35 1.82 0.879 1.61 0.272

1.97 1.63 0.908 1.51 0.243

1.54 1.35 0.937 1.43 0.202

1.07 0.998 0.965 1.34 0.149

1.74 1.13 0.805 1.73 0.169

1.37 0.952 0.835 1.62 0.142

0.96 0.712 0.863 1.52 0.106

Note: Double Horizontal Line indicates K l/r limit of 200.

42

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/4 5.41 0.233 2x2 3/16 4.32 0.174 1/8 3.05 0.116 1 3/4 x 1 3/4 3/16 3.68 0.174 1 5/8 x 1 5/8 3/16 3.36 1/8 2.42 1 1/2 x 1 1/2 3/16 3.04 0.174 1/8 2.20 0.116 3/16 2.40 0.174 0.174 0.116 Fy = 50 ksi 28 24 21 17 13 9 7 5 4 ==== 20 17 15 13 10 7 5 4 3 3 ====

Fy=50

ERW

1 1/4 x 1 1/4 1/8 1.78 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

45 40 36 32 27 21 16 12 10 8 6 ====

36 32 29 26 22 18 13 10 8 7 5 5 ====

25 23 21 19 16 13 10 8 6 5 4 4 ====

31 27 24 20 16 12 9 7 5 4 ====

25 21 18 14 10 7 5 4 ====

18 15 13 11 8 5 4 3 2 ====

20 16 12 8 5 3 3 ====

15 12 9 7 4 3 2 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

1.51 0.745 0.703 2.03 0.111

1.19 0.640 0.732 1.86 0.096

0.84 0.486 0.761 1.73 0.073

1.02 0.405 0.630 2.20 0.060

0.93 0.312 0.579 2.42 0.047

0.67 0.246 0.608 2.21 0.037

0.84 0.235 0.528 2.68 0.035

0.61 0.188 0.556 2.43 0.028

0.67 0.121 0.425 3.46 0.018

0.49 0.101 0.454 3.03 0.015

Note: Double Horizontal Line indicates K l/r limit of 200.

43

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 103.30 0.465* 20 x 12 3/8 78.52 0.349* 5/16 65.87 0.291* 5/8 110.36 0.581 1/2 89.68 20 x 8 3/8 68.31 5/16 57.36 0.291* 1/2 76.07 0.465* 20 x 4 3/8 58.10 0.349* 0.465* 0.349* Fy = 50 ksi 705 696 691 685 678 671 664 656 648 639 630 620 609 599 587 573 558 543 527 511 495 478 461 443 425 406 387 367 347 326 305 286 269 254 239 226 214 203 193 183 472 467 463 460 456 452 447 443 438 433 427 421 415 409 402 395 388 381 373 364 356 347 337 327 317 306 294 282 269 254 239 224 211 199 187 177 168 159 151 143

Fy=50

y

x

x

y

ERW

5/16 48.86 0.291*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

815 808 804 800 795 790 785 780 774 768 762 755 749 742 734 727 719 711 703 694 685 676 665 654 642 631 619 606 594 581 568 555 542 528 514 500 486 471 456 441

554 549 547 544 541 538 535 532 528 524 521 517 513 508 504 499 494 490 484 479 174 468 463 457 451 445 438 432 425 418 411 403 396 388 380 371 363 354 344 335

435 432 430 428 426 423 421 418 416 413 410 407 404 401 398 394 391 387 384 380 376 372 367 363 359 354 349 345 340 335 329 324 319 313 307 301 295 288 282 275

909 893 884 875 864 852 840 827 814 800 785 769 753 736 719 701 683 664 644 624 603 582 560 537 514 491 466 441 416 389 365 342 322 303 286 270 256 243 230 219

366 362 360 357 354 351 348 345 341 337 333 329 325 320 316 311 305 300 294 289 282 276 270 263 255 248 240 231 222 213 202 191 180 170 160 151 143 136 129 123

595 578 568 555 541 525 507 485 459 432 403 373 341 307 272 239 212 189 169 153 139 126 116 106 98 90 84 78 ====

394 385 378 371 363 354 345 334 322 309 295 279 262 242 220 194 172 153 138 124 113 103 94 86 79 73 68 63 ====

301 294 289 284 279 273 266 259 250 242 232 222 210 197 183 166 147 131 117 106 97 88 80 74 68 63 58 54 51 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

28.3 1550 705 1.48 4.99 0.183 0.241 231 105

21.5 1200 547 1.48 5.04 0.179 0.236 179 81.7

18.1 1010 464 1.48 5.07 0.179 0.234 151 69.3

30.3 1440 338 2.06 3.34 0.210 0.359 215 50.5

24.6 1190 283 2.05 3.39 0.207 0.348 178 42.3

18.7 926 222 2.04 3.44 0.202 0.337 138 33.2

15.7 786 189 2.04 3.47 0.200 0.332 117 28.2

20.9 838 58.7 3.78 1.68 0.249 0.712 125 8.77

16.0 657 47.6 3.72 1.73 0.244 0.672 98.1 7.11

13.4 560 41.2 3.69 1.75 0.239 0.650 83.6 6.15

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

44

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 93.34 0.581 1/2 76.07 0.465 18 x 6 3/8 58.10 0.349* 5/16 48.86 0.291* 1/4 39.43 0.233* 1/2 89.68 16 x 12 3/8 68.31 5/16 57.36 0.291* 5/8 93.34 0.581 1/2 76.07 0.465 16 x 8 3/8 58.10 0.465 0.349* Fy = 50 ksi 738 730 725 720 715 709 703 697 690 683 676 669 661 654 646 637 629 620 611 601 592 582 572 562 552 541 530 519 508 496 484 473 460 448 435 423 409 396 383 369 528 523 521 518 515 512 508 505 501 497 493 488 484 479 475 470 464 459 454 448 442 436 430 424 417 410 403 396 388 380 371 362 353 344 334 325 315 305 295 285

Fy=50

y

x

x

y

ERW

5/16 48.86 0.291*

0.349*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

771 753 741 729 716 701 685 669 651 632 613 592 571 549 526 502 477 451 425 397 368 339 310 285 262 242 225 209 195 182 171 160 151 142 134 126 120 114 108 102

627 612 604 594 583 571 559 546 532 517 502 486 469 451 433 414 395 374 353 332 309 286 262 241 222 205 190 177 165 154 144 135 127 120 113 107 101 96 91 87

421 414 410 405 400 394 388 382 375 367 359 351 342 333 322 312 300 288 275 260 244 227 209 192 177 163 152 141 131 123 115 108 101 96 90 85 81 76 73 69

324 319 316 313 309 305 301 296 291 286 280 274 268 262 255 247 239 231 222 212 202 191 178 164 151 140 130 121 113 105 99 92 87 82 77 73 69 66 62 59

236 232 230 228 226 223 220 217 214 210 207 203 199 194 190 185 180 174 169 162 156 149 141 133 124 115 106 99 92 86 81 76 71 67 63 60 57 54 51 48

415 412 410 408 405 403 400 398 395 392 389 386 382 379 375 372 368 364 360 356 352 347 343 338 333 328 323 318 312 307 301 295 289 283 276 269 262 255 248 240

771 758 750 741 732 722 711 700 688 676 663 649 635 620 605 589 573 557 539 522 504 485 466 446 426 405 383 361 339 317 297 278 262 247 233 220 208 197 187 178

627 616 610 603 596 588 579 570 561 551 541 530 519 507 495 482 470 456 443 429 414 399 384 368 352 336 319 302 284 265 249 233 219 207 195 184 175 165 157 149

448 442 439 435 431 426 422 417 411 406 400 394 387 380 373 365 358 349 341 331 321 309 298 286 274 262 249 236 223 209 196 184 173 163 154 145 138 130 124 118

348 344 341 338 335 332 329 325 321 317 313 308 304 299 294 288 283 277 271 264 258 251 243 236 227 219 210 200 190 178 167 157 148 139 131 124 117 111 106 100

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 25.7 923 158 2.42 2.48 0.251 0.488 138 23.6 20.9 770 134 2.40 2.53 0.244 0.468 115 20.0 16.0 602 106 2.38 2.58 0.239 0.453 89.9 15.8 13.4 513 91.3 2.37 2.61 0.235 0.440 76.6 13.6 10.8 419 75.1 2.36 2.63 0.232 0.431 62.6 11.2 24.6 904 581 1.25 4.86 0.218 0.254 135 86.8 18.7 702 452 1.25 4.91 0.213 0.248 105 67.5 15.7 595 384 1.24 4.94 0.211 0.245 88.9 57.3 25.7 815 274 1.72 3.27 0.252 0.375 122 40.9 20.9 679 230 1.72 3.32 0.246 0.363 101 34.3 16.0 531 181 1.71 3.37 0.241 0.354 79.3 27.0 13.4 451 155 1.71 3.40 0.238 0.346 67.3 23.1

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

45

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 62.46 0.465 16 x 4 3/8 47.90 0.349* 5/16 40.35 0.291* 5/8 93.34 0.581 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 516 496 483 469 453 435 416 396 374 351 327 301 274 246 216 190 168 150 135 121 110 100 92 84 78 72 67 ==== 365 355 349 341 333 324 313 302 290 276 258 240 220 199 178 156 139 124 111 100 91 83 76 69 64 59 55 51 ==== 281 274 269 264 258 252 244 237 228 219 208 197 184 170 153 135 119 106 95 86 78 71 65 60 55 51 47 44 ==== 771 760 754 747 740 732 724 716 707 697 688 677 667 656 644 633 621 608 596 583 569 555 541 527 512 497 481 466 449 433 416 399 381 363 344 326 308 292 278 264 627 618 613 608 602 596 590 583 576 568 560 552 544 535 526 517 507 497 487 477 466 455 444 433 421 409 397 384 371 358 345 331 317 303 288 273 258 245 233 221 474 469 466 462 459 455 451 446 441 436 430 424 417 411 404 397 390 383 375 367 359 351 342 334 325 316 307 297 288 278 268 257 247 236 225 214 203 192 182 173 371 367 365 363 360 357 354 351 348 344 341 337 333 329 324 320 315 310 305 300 295 289 283 277 271 264 258 251 243 234 226 218 209 200 191 182 172 163 155 147 1/2 76.07 0.465 14 x 10 3/8 58.10 0.349* 5/16 48.86 0.291*

Fy=50

y

x

x

y

ERW

1/4 39.43 0.233*

274 272 270 269 267 265 263 261 259 257 254 252 249 246 243 240 237 233 230 226 223 219 215 211 206 202 198 193 188 183 178 172 166 160 154 147 140 133 126 120

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

17.2 455 47.0 3.11 1.65 0.302 0.732 67.9 7.02

13.2 360 38.3 3.07 1.71 0.293 0.689 53.8 5.72

11.1 308 33.2 3.05 1.73 0.288 0.669 46.0 4.96

25.7 687 407 1.30 3.98 0.262 0.316 103 60.8

20.9 573 341 1.30 4.04 0.255 0.306 85.6 50.9

16.0 447 267 1.29 4.09 0.251 0.300 66.8 39.9

13.4 380 227 1.29 4.12 0.247 0.295 56.7 33.9

10.8 310 186 1.29 4.14 0.244 0.290 46.3 27.8

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

46

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 76.33 0.581 1/2 62.46 0.465 3/8 47.90 0.349* 14 x 6 5/16 40.35 0.291* 1/4 32.63 0.233* 3/16 24.73 5/8 67.82 1/2 55.66 0.465 3/8 42.79 0.349* 14 x 4 5/16 36.10 0.291* 1/4 29.23 0.174* 0.581 Fy = 50 ksi 148 146 145 143 142 140 138 136 134 132 129 127 124 121 118 115 112 108 105 101 97 92 87 82 76 71 66 61 57 53 50 47 44 41 39 37 35 33 31 30 561 538 524 507 489 469 447 424 399 372 344 314 283 250 218 192 170 151 136 123 111 101 93 85 78 73 ====

Fy=50

y

x

x

y

ERW

3/16 22.18 0.174*

0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

630 615 605 595 583 571 558 544 529 513 497 480 462 443 424 403 382 361 338 315 291 266 243 223 206 190 176 164 153 143 134 126 118 111 105 99 94 89 85 80

516 504 496 488 479 469 459 447 436 423 410 396 382 367 352 336 319 302 284 266 246 227 207 190 176 162 150 140 130 122 114 107 101 95 90 85 80 76 72 69

390 383 378 373 368 361 353 345 336 327 317 307 296 285 274 262 249 236 223 210 195 181 166 152 140 130 120 112 104 97 91 86 80 76 72 68 64 61 58 55

303 298 295 291 287 283 278 273 268 262 256 250 243 236 228 220 211 200 189 178 166 154 141 130 120 111 103 95 89 83 78 73 69 65 61 58 55 52 49 47

222 219 217 214 212 209 206 202 199 195 191 187 182 177 172 167 161 155 149 142 134 126 117 107 99 91 85 79 74 69 64 60 57 54 50 48 45 43 41 39

459 441 430 417 402 387 370 351 332 311 289 266 242 216 190 167 148 132 118 107 97 88 81 74 68 63 59 ====

348 338 331 323 312 300 288 274 260 245 229 212 194 175 155 137 121 108 97 87 79 72 66 61 56 52 48 45 ====

269 262 257 251 245 239 231 223 214 205 194 181 167 151 135 119 105 94 84 76 69 63 58 53 49 45 42 39 ====

196 191 188 184 180 176 171 166 160 154 147 139 131 122 111 98 87 78 70 63 57 52 48 44 40 37 35 32 30 ====

128 126 124 122 119 117 114 111 108 104 101 96 92 87 81 75 68 61 55 49 45 41 37 34 32 29 27 25 23 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 21.0 478 124 1.96 2.43 0.308 0.508 71.4 18.5 17.2 402 105 1.96 2.48 0.300 0.491 60.0 15.7 13.2 317 84.1 1.94 2.53 0.291 0.471 47.3 12.6 11.1 271 72.3 1.94 2.55 0.287 0.461 40.5 10.8 8.96 222 59.6 1.93 2.58 0.283 0.451 33.2 8.90 6.76 170 45.9 1.92 2.61 0.278 0.442 25.4 6.85 18.7 373 47.1 2.81 1.59 0.351 0.794 55.7 7.03 15.3 317 41.1 2.78 1.64 0.338 0.745 47.3 6.14 11.8 252 33.6 2.74 1.69 0.328 0.702 37.6 5.02 9.92 216 29.2 2.72 1.72 0.321 0.679 32.3 4.36 8.03 178 24.4 2.70 1.74 0.316 0.658 26.6 3.64 6.06 137 19.0 2.69 1.77 0.310 0.638 20.5 2.84

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

47

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 69.27 0.465 3/8 53.00 0.349 12 x 10 5/16 44.60 0.291* 1/4 36.03 0.233* 5/8 76.33 1/2 62.46 3/8 47.90 0.349 12 x 8 5/16 40.35 0.291* 1/4 32.63 0.233* 0.581 0.465 Fy = 50 ksi 630 619 612 604 597 588 579 569 559 548 537 526 513 501 488 474 460 446 431 416 400 384 368 351 333 315 296 277 259 242 226 212 200 188 178 168 159 151 143 136 516 507 501 495 489 482 475 467 459 451 442 432 423 412 402 391 380 369 357 345 332 319 306 292 278 264 249 234 219 204 191 179 169 159 150 142 134 127 121 115

Fy=50

y

x

x

y

ERW

3/16 24.73 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

570 562 557 552 547 541 535 529 522 515 508 500 492 484 476 467 458 449 439 430 420 409 399 388 377 366 354 342 330 318 305 293 279 266 252 238 226 214 203 193

438 432 428 425 421 416 412 407 402 397 391 385 379 373 367 360 354 347 339 332 325 317 309 301 292 284 275 266 257 248 239 229 219 209 198 188 178 169 160 152

358 354 352 349 346 343 340 337 334 330 326 322 318 312 307 302 296 290 284 278 272 266 259 253 246 239 231 224 217 209 201 193 185 177 168 159 151 143 136 129

265 263 261 260 258 256 254 252 250 248 246 243 241 238 235 231 228 224 221 217 213 209 205 200 196 191 186 181 176 170 164 158 152 145 138 131 124 118 112 106

396 389 385 381 376 371 365 359 353 347 340 333 326 319 311 303 294 286 277 268 259 249 239 229 219 208 197 186 174 163 152 143 134 127 119 113 107 101 96 91

325 321 318 315 312 308 305 301 296 292 287 281 275 268 262 255 248 241 234 226 218 210 202 194 185 176 167 158 148 138 130 122 114 108 102 96 91 86 82 78

242 238 236 234 232 230 227 224 222 219 215 212 208 205 201 197 192 188 183 179 174 168 163 157 151 144 137 129 122 114 107 100 94 89 84 79 75 71 67 64

161 159 158 157 156 154 153 151 150 148 146 145 143 141 138 136 133 131 128 125 122 119 115 112 108 104 100 96 92 87 82 77 72 68 64 61 57 54 52 49

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

19.0 395 298 1.15 3.96 0.289 0.319 59.0 44.5

14.6 310 234 1.15 4.01 0.283 0.312 46.3 34.9

12.2 264 200 1.15 4.04 0.277 0.305 39.4 29.9

9.90 216 164 1.15 4.07 0.275 0.302 32.3 24.5

21.0 396 210 1.37 3.16 0.318 0.400 59.1 31.4

17.2 333 177 1.37 3.21 0.310 0.389 49.7 26.4

13.2 262 140 1.37 3.27 0.302 0.377 39.1 20.9

11.1 224 120 1.37 3.29 0.297 0.370 33.5 17.9

8.96 184 98.8 1.36 3.32 0.292 0.363 27.5 14.8

6.76 140 75.7 1.36 3.35 0.290 0.357 20.9 11.3

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

48

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 67.82 0.581 1/2 55.66 0.465 12 x 6 3/8 42.79 0.349 5/16 36.10 0.291* 1/4 29.23 0.233* 3/16 22.18 5/8 59.32 1/2 48.85 0.465 12 x 4 3/8 37.69 0.349 5/16 31.84 0.291* 1/4 25.82 0.174* 0.581 Fy = 50 ksi 143 141 140 138 136 135 133 131 128 126 123 121 118 115 112 108 105 101 97 93 88 83 78 72 66 61 57 53 49 46 43 41 38 36 34 32 30 29 27 26 492 472 459 444 428 410 390 369 347 323 298 272 244 214 186 164 145 129 116 105 95 87 79 73 67 62 ====

Fy=50

y

x

x

y

ERW

3/16 19.63 0.174*

0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

561 547 538 529 519 507 495 483 469 455 440 424 408 391 373 354 335 315 295 273 251 229 209 192 177 164 152 141 132 123 115 108 102 96 90 85 81 77 73 ====

459 448 441 434 425 416 407 397 386 375 363 350 337 324 310 295 280 264 248 231 213 195 179 164 151 140 130 120 112 105 98 92 87 82 77 73 69 65 62 59

354 346 340 335 329 322 315 307 299 291 282 272 263 253 242 231 220 208 196 183 170 157 143 132 121 112 104 97 90 84 79 74 70 66 62 59 55 53 50 47

290 285 281 278 274 269 264 259 252 245 238 230 222 214 205 196 187 177 167 157 146 135 123 113 105 97 90 83 78 73 68 64 60 57 53 50 48 45 43 41

214 210 208 206 203 200 197 193 189 185 181 177 172 167 161 156 149 143 136 128 120 111 102 93 86 79 74 69 64 60 56 52 49 46 44 41 39 37 35 34

405 389 379 367 354 340 325 308 291 272 253 232 210 187 163 144 127 113 102 92 83 76 69 64 59 54 50 ====

312 300 293 284 274 264 253 241 228 214 200 184 168 151 134 117 104 93 83 75 68 62 57 52 48 44 41 ====

255 248 243 238 231 223 214 204 194 182 171 158 145 131 117 103 91 81 73 66 60 54 50 46 42 39 36 33 ====

187 182 179 175 171 166 161 156 150 143 136 128 119 108 97 85 75 67 60 54 49 45 41 38 35 32 30 28 ====

124 121 119 117 114 112 109 105 102 98 94 90 85 80 73 67 59 53 47 43 39 35 32 30 27 25 23 22 20 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 18.7 321 106 1.74 2.39 0.350 0.529 47.9 15.8 15.3 271 91.1 1.72 2.44 0.339 0.504 40.5 13.6 11.8 215 72.9 1.72 2.49 0.329 0.486 32.1 10.9 9.92 184 62.8 1.71 2.52 0.323 0.474 27.5 9.38 8.03 151 51.9 1.71 2.54 0.319 0.464 22.5 7.75 6.06 116 40.0 1.70 2.57 0.313 0.455 17.3 5.97 16.4 245 40.3 2.47 1.57 0.402 0.814 36.6 6.02 13.5 209 35.3 2.43 1.62 0.388 0.765 31.2 5.27 10.4 168 28.9 2.41 1.67 0.371 0.720 25.1 4.32 8.76 144 25.2 2.39 1.70 0.365 0.695 21.5 3.76 7.10 119 21.0 2.38 1.72 0.358 0.676 17.8 3.14 5.37 91.8 16.4 2.37 1.75 0.351 0.655 13.7 2.45

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

49

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 36.41 0.349 12 x 3 1/2 5/16 30.78 0.291* 5/16 29.72 0.291* 12 x 3 1/4 24.12 0.233* 3/16 18.35 0.174* 1/4 22.42 12 x 2 3/16 17.08 1/2 55.66 0.465 3/8 42.79 0.349 10 x 8 5/16 36.10 0.291 1/4 29.23 0.233* 0.174* Fy = 50 ksi 160 150 143 134 123 109 92 71 56 46 38 32 27 23 ==== 104 98 94 89 84 77 68 57 45 37 30 26 22 19 ====

Fy=50

y

x

x

y

ERW

3/16 22.18 0.174*

0.233*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

300 287 278 268 257 245 231 217 202 186 168 150 131 113 98 86 76 68 61 55 50 46 42 38 ====

247 238 233 226 218 208 197 185 172 159 145 130 114 98 85 75 66 59 53 48 44 40 36 33 ====

238 228 221 214 202 190 177 162 147 130 113 95 81 70 61 53 47 42 38 34 31 ====

173 167 163 157 152 145 137 129 119 108 94 79 68 58 51 45 40 35 32 29 26 ====

114 110 107 105 101 98 93 89 84 78 71 63 54 46 40 35 31 28 25 23 21 19 ====

459 451 446 440 434 428 421 414 407 399 391 382 373 364 354 345 334 324 313 302 290 278 266 253 241 227 214 200 186 174 163 153 144 135 128 121 114 108 103 98

354 348 344 340 335 331 326 320 315 309 303 296 289 282 275 268 260 252 244 235 227 218 209 199 189 179 169 159 148 138 130 122 114 108 102 96 91 86 82 78

298 292 289 286 282 278 274 270 265 260 255 250 244 238 232 226 220 213 206 199 192 185 177 169 161 153 144 136 127 119 111 104 98 92 87 82 78 74 70 67

232 229 227 225 223 220 217 214 211 208 205 201 197 193 189 184 179 173 168 162 157 151 145 138 132 125 119 112 105 98 92 86 81 76 72 68 64 61 58 55

154 152 151 150 149 147 146 144 143 141 139 137 135 133 131 128 126 123 120 117 114 110 107 103 99 95 90 85 80 75 70 66 62 58 55 52 49 47 44 42

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10

6

10.0 156 21.3 2.71 1.46 0.385 0.822 23.3 3.18

8.46 134 18.6 2.68 1.48 0.379 0.796 20.0 2.78

8.17 124 13.1 3.08 1.27 0.395 0.935 18.5 1.96

6.63 103 11.1 3.05 1.29 0.386 0.896 15.4 1.66

5.02 79.6 8.72 3.02 1.32 0.378 0.864 11.9 1.30

6.17 86.9 4.40 4.44 0.845 0.426 1.40 13.0 0.657

4.67 67.4 3.55 4.36 0.872 0.416 1.32 10.1 0.530

15.3 214 151 1.19 3.14 0.357 0.405 32.0 22.5

11.8 169 120 1.19 3.19 0.349 0.393 25.2 17.9

9.92 145 103 1.19 3.22 0.342 0.385 21.7 15.4

8.03 119 84.7 1.19 3.25 0.337 0.379 17.8 12.6

6.06 91.4 65.1 1.18 3.28 0.332 0.372 13.6 9.72

ay, ÷ 10 6

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

50

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 59.32 0.581 1/2 48.85 0.465 3/8 37.69 0.349 10 x 6 5/16 31.84 0.291 1/4 25.82 3/16 19.63 3/8 35.13 0.349 5/16 29.72 0.291 10 x 5 1/4 24.12 0.233* 0.233* 0.174* Fy = 50 ksi 205 201 198 196 193 190 186 182 178 174 170 164 158 152 146 139 132 125 118 110 102 94 86 79 73 68 63 58 54 51 48 45 42 39 37 35 33 32 30 29 138 136 134 133 131 129 127 125 122 120 117 114 111 108 104 101 97 93 88 84 78 73 67 61 57 52 49 45 42 39 37 35 32 31 29 27 26 24 23 22

Fy=50

y

x

x

y

ERW

3/16 18.35 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

492 479 472 463 454 444 433 421 409 396 382 368 353 338 322 305 288 270 251 231 211 192 176 162 149 138 128 119 111 103 97 91 86 81 76 72 68 64 61 ====

405 395 389 382 374 366 358 348 339 328 317 306 294 282 269 256 242 228 213 197 181 165 151 139 128 118 110 102 95 89 83 78 73 69 65 62 58 55 53 ====

312 304 300 295 289 283 277 270 262 255 246 238 229 220 210 200 190 179 168 157 145 133 121 111 103 95 88 82 76 71 67 63 59 56 52 50 47 44 42 40

263 256 253 248 244 239 233 228 222 215 209 202 194 187 179 170 162 153 144 135 125 115 105 96 89 82 76 71 66 62 58 54 51 48 45 43 40 38 36 35

290 281 276 270 263 256 248 240 231 222 212 202 191 180 168 156 143 130 117 105 96 87 80 73 67 62 58 54 50 47 44 41 39 36 ====

245 238 233 228 223 217 210 203 196 188 180 172 163 153 144 133 123 112 101 91 82 75 69 63 58 54 50 46 43 40 38 35 33 31 ====

191 186 184 181 177 173 169 165 160 154 147 141 133 126 118 110 102 93 84 76 69 63 57 53 49 45 42 39 36 34 32 30 28 26 25 ====

128 126 124 122 120 117 115 112 110 106 103 100 96 92 87 83 78 72 65 59 54 49 45 41 38 35 32 30 28 26 25 23 22 20 19 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

16.4 201 89.4 1.50 2.34 0.408 0.550 30.0 13.4

13.5 171 76.8 1.49 2.39 0.395 0.527 25.5 11.5

10.4 137 61.8 1.49 2.44 0.38 0.505 20.5 9.23

8.76 118 53.3 1.49 2.47 0.371 0.493 17.6 7.96

7.10 96.9 44.1 1.48 2.49 0.366 0.483 14.5 6.59

5.37 74.6 34.1 1.48 2.52 0.360 0.472 11.1 5.09

9.67 120 40.6 1.72 2.05 0.403 0.595 17.9 6.06

8.17 104 35.2 1.72 2.07 0.393 0.580 15.5 5.26

6.63 85.8 29.3 1.71 2.10 0.386 0.566 12.8 4.38

5.02 66.2 22.7 1.71 2.13 0.379 0.553 9.89 3.39

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

51

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 50.81 0.581 1/2 42.05 0.465 10 x 4 3/8 32.58 0.349 5/16 27.59 0.291 1/4 22.42 0.233* 3/16 17.08 10 x 3 1/2 3/16 16.44 3/8 30.03 0.349 5/16 25.46 0.291 10 x 3 1/4 20.72 0.233* 15.80 0.174* 0.174* Fy = 50 ksi 118 115 113 110 108 105 102 99 95 91 87 82 76 70 63 56 50 44 40 36 32 30 27 25 23 21 20 18 ==== 113 109 107 105 102 98 95 91 86 81 76 70 63 54 47 42 37 33 29 27 24 22 20 18 17 ====

Fy=50

y

x

x

y

ERW

3/16 0.174*

1/8 10.71 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

420 402 391 378 364 348 331 312 293 272 250 226 202 176 153 134 119 106 95 86 78 71 65 60 55 ====

348 334 325 315 303 291 277 263 247 231 213 195 176 155 135 119 105 94 84 76 69 63 57 53 49 45 ====

296 259 252 244 236 227 217 206 195 182 170 156 142 127 111 98 87 77 69 63 57 52 47 43 40 37 34 ====

228 219 214 207 200 193 184 176 166 156 146 135 123 111 98 86 76 68 61 55 50 45 41 38 35 32 30 ====

177 172 169 165 160 156 150 144 136 129 120 111 102 92 82 72 64 57 51 46 42 38 35 32 30 27 25 24 ====

248 234 225 214 202 189 175 159 143 125 105 89 76 65 57 50 44 39 35 32 ====

210 199 191 183 173 162 150 138 124 109 94 79 67 58 50 44 39 35 31 28 ====

163 156 152 147 141 133 124 114 103 92 80 67 57 49 43 38 34 30 27 24 22 ====

108 104 101 98 95 91 86 81 76 69 62 53 45 39 34 30 26 23 21 19 17 ====

60 59 57 56 54 52 50 48 46 43 40 36 32 27 24 21 19 17 15 13 12 11 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 14.0 149 33.4 2.11 1.54 0.470 0.838 22.3 4.99 11.6 129 29.4 2.09 1.59 0.450 0.789 19.3 4.39 8.97 104 24.3 2.07 1.64 0.431 0.738 15.5 3.63 7.59 90.1 21.2 2.06 1.67 0.421 0.716 13.5 3.17 6.17 74.7 17.7 2.05 1.70 0.413 0.697 11.2 2.64 4.67 57.8 13.9 2.04 1.72 0.404 0.672 8.63 2.08 4.50 53.6 10.3 2.28 1.51 0.420 0.765 8.00 1.54 8.27 88.0 12.4 2.66 1.22 0.470 1.00 13.1 1.85 7.01 76.3 11.0 2.63 1.25 0.459 0.956 11.4 1.64 5.70 63.6 9.28 2.62 1.28 0.448 0.921 9.50 1.39 4.32 49.4 7.33 2.60 1.30 0.437 0.884 7.38 1.09 2.93 34.2 5.16 2.57 1.33 0.428 0.852 5.11 0.771

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

52

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 27.48 0.349 5/16 23.34 0.291 10 x 2 1/4 19.02 0.233* 3/16 14.53 0.174* 5/8 59.32 1/2 48.85 3/8 37.69 0.349 9x7 5/16 31.84 0.291 1/4 25.82 0.233 0.581 0.465 Fy = 50 ksi 492 481 475 468 460 452 443 433 423 412 401 390 378 365 352 338 324 310 295 279 263 247 230 212 195 181 168 156 145 136 127 119 112 106 100 94 89 85 80 76 405 396 391 385 379 372 365 358 350 341 332 323 313 303 293 282 271 259 247 235 222 209 195 181 167 154 143 133 124 116 109 102 96 90 85 81 76 72 69 65

Fy=50

y

x

x

y

ERW

3/16 19.63 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

227 205 189 171 150 126 99 76 60 49 40 34 29 ====

193 175 162 147 130 111 89 69 54 44 36 31 26 ====

149 139 132 121 108 93 77 59 47 38 31 26 23 ====

98 92 88 83 77 69 60 48 38 31 25 21 18 16 ====

312 305 302 297 293 288 282 276 270 264 257 250 243 235 228 220 211 202 194 184 175 165 155 144 133 123 114 106 99 93 87 81 77 72 68 64 61 58 55 52

263 257 254 251 247 242 238 233 228 223 217 212 206 199 193 186 179 172 165 157 149 141 132 124 115 106 98 91 85 80 75 70 66 62 59 55 52 50 47 45

213 209 206 203 200 197 193 189 185 181 177 172 167 162 157 152 146 141 135 128 122 116 109 102 95 88 81 76 71 66 62 58 55 51 48 46 43 41 39 37

145 143 142 140 139 137 135 133 131 128 126 123 120 118 115 111 108 105 101 97 93 89 84 79 73 68 63 59 55 51 48 45 42 40 37 35 34 32 30 29

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 7.58 71.7 4.69 3.91 0.786 0.529 1.62 10.7 0.700 6.43 62.6 4.24 3.84 0.812 0.514 1.52 9.35 0.633 5.24 52.5 3.67 3.78 0.837 0.499 1.43 7.84 0.548 3.98 41.0 2.97 3.72 0.864 0.485 1.34 6.12 0.444 16.4 174 117 1.22 2.68 0.424 0.491 26.0 17.5 13.5 149 100 1.22 2.73 0.408 0.473 22.3 14.9 10.4 119 80.4 1.22 2.78 0.393 0.453 17.8 12.0 8.76 102 69.2 1.21 2.81 0.386 0.443 15.2 10.3 7.10 84.1 57.2 1.21 2.84 0.380 0.434 12.6 8.54 5.37 64.7 44.1 1.21 2.87 0.373 0.426 9.66 6.59

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

53

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 50.81 0.581 1/2 42.05 0.465 3/8 32.58 0.349 9x5 5/16 27.59 0.291 1/4 22.42 0.233 3/16 17.08 0.174* Fy = 50 ksi 125 122 120 118 116 114 111 109 106 102 99 95 91 87 82 77 72 66 59 53 48 44 40 37 34 32 29 27 25 24 22 21 20 18 17 ==== 1/2 35.24 0.465 3/8 27.48 0.349 9x3 5/16 23.34 0.291 1/4 19.02 0.233

Fy=50

y

x

x

y

ERW

3/16 14.53 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

420 406 398 388 378 366 354 341 327 312 296 280 263 245 226 206 185 165 148 134 121 111 101 93 86 79 73 68 64 59 56 52 ====

348 337 330 323 314 305 295 285 274 262 249 236 222 208 193 177 161 144 129 117 106 96 88 81 75 69 64 60 56 52 49 46 ====

269 261 256 250 244 237 230 222 214 205 196 186 176 166 154 143 131 118 106 96 87 79 72 67 61 57 53 49 46 43 40 37 35 ====

228 221 217 212 207 201 195 189 182 174 167 159 150 141 132 123 112 102 92 83 75 68 63 57 53 49 45 42 39 37 34 32 30 29 ====

185 180 176 173 168 164 159 154 148 143 136 130 123 116 109 101 93 85 77 69 63 57 52 48 44 41 38 35 33 31 29 27 25 24 ====

292 275 263 250 235 218 200 180 158 135 112 94 80 69 60 53 47 42 38 ====

227 215 206 196 185 173 160 145 130 113 95 80 68 59 51 45 40 36 32 29 ====

193 182 175 167 158 148 137 126 113 99 85 71 61 52 46 40 35 32 28 26 ====

157 149 143 137 130 122 113 104 94 84 72 61 52 45 39 34 30 27 24 22 20 ====

105 101 98 95 91 87 83 77 72 65 56 48 41 35 31 27 24 21 19 17 16 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 14.0 133 51.9 1.60 1.92 0.474 0.674 19.9 7.75 11.6 115 45.2 1.60 1.97 0.454 0.642 17.2 6.75 8.97 92.5 36.8 1.59 2.03 0.436 0.609 13.8 5.50 7.59 79.8 32.0 1.58 2.05 0.428 0.593 11.9 4.78 6.17 66.1 26.6 1.58 2.08 0.420 0.580 9.87 3.97 4.67 51.1 20.7 1.57 2.10 0.411 0.564 7.63 3.09 9.74 80.8 13.2 2.47 1.16 0.542 1.11 12.1 1.97 7.58 66.3 11.2 2.43 1.21 0.514 1.02 9.90 1.67 6.43 57.7 9.88 2.42 1.24 0.501 0.976 8.62 1.48 5.24 48.2 8.38 2.40 1.27 0.489 0.938 7.20 1.25 3.98 37.6 6.63 2.38 1.29 0.476 0.900 5.61 0.990

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

54

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 50.81 0.581 1/2 42.05 0.465 3/8 32.58 0.349 8x6 5/16 27.59 0.291 1/4 22.42 0.233 3/16 17.08 0.174* 5/8 42.30 1/2 35.24 3/8 27.48 0.349 8x4 5/16 23.34 0.291 1/4 19.02 0.233 0.581 0.465 Fy = 50 ksi 351 336 326 315 303 289 274 259 242 224 205 184 163 141 123 108 96 85 77 69 63 57 52 48 44 ==== 292 280 272 264 254 243 231 219 205 191 176 160 143 125 109 96 85 76 68 61 56 51 46 43 39 36 ====

Fy=50

y

x

x

y

ERW

3/16 14.53 0.174*

1/8 9.86 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

420 409 402 394 386 377 367 357 346 335 322 310 296 283 268 253 238 221 204 187 170 155 141 130 120 111 103 95 89 83 78 73 69 65 61 58 55 ====

348 339 334 327 321 313 306 297 289 279 270 259 249 238 226 214 202 189 175 161 147 134 122 112 104 96 89 83 77 72 67 63 59 56 53 50 47 45 ====

269 262 258 254 249 243 237 231 225 218 211 203 195 187 178 169 160 150 141 130 119 109 100 91 84 78 72 67 63 59 55 51 48 46 43 41 38 36 35 ====

228 222 219 215 211 206 201 196 191 185 179 172 166 159 152 144 137 129 120 112 103 94 86 79 73 67 62 58 54 50 47 44 42 39 37 35 33 31 30 28

185 181 178 175 171 168 164 160 155 151 146 141 136 130 124 119 112 106 99 92 85 78 71 66 60 56 52 48 45 42 39 37 35 33 31 29 28 26 25 24

132 139 128 126 124 122 120 117 115 112 109 106 102 99 95 91 86 81 76 71 66 61 55 51 47 43 40 37 35 33 30 29 27 25 24 23 21 20 19 18

227 218 213 206 199 191 182 173 163 152 141 129 117 104 91 80 71 63 56 51 46 42 39 35 33 30 ====

193 185 181 175 169 162 155 147 139 130 121 111 101 90 79 69 61 55 49 44 40 37 33 31 28 26 24 ====

157 151 147 143 138 133 127 121 114 107 100 92 84 76 67 58 52 46 41 37 34 31 28 26 24 22 21 ====

111 108 106 104 101 98 95 91 87 83 77 71 65 59 52 46 41 36 33 29 27 24 22 20 19 17 16 15 ====

64 62 61 60 59 57 56 54 52 50 47 45 42 39 36 32 28 25 23 20 19 17 15 14 13 12 11 10 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 14.0 114 72.2 1.26 2.27 0.491 0.582 17.0 10.8 11.6 98.2 62.5 1.25 2.32 0.473 0.557 14.7 9.33 8.97 79.1 50.6 1.25 2.38 0.454 0.532 11.8 7.56 7.59 68.3 43.8 1.25 2.40 0.445 0.520 10.2 6.54 6.17 56.6 36.4 1.25 2.43 0.436 0.509 8.45 5.44 4.67 43.7 28.2 1.24 2.46 0.427 0.497 6.53 4.21 11.7 81.9 26.6 1.75 1.51 0.571 0.880 12.2 3.97 9.74 71.7 23.6 1.74 1.56 0.543 0.825 10.7 3.52 7.58 58.7 19.6 1.73 1.61 0.517 0.773 8.77 2.93 6.43 51.0 17.2 1.72 1.63 0.504 0.748 7.62 2.57 5.24 42.5 14.4 1.72 1.66 0.493 0.728 6.35 2.15 3.98 33.1 11.3 1.71 1.69 0.481 0.704 4.94 1.69 2.70 22.9 7.90 1.70 1.71 0.472 0.684 3.42 1.18

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

55

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 31.84 0.465 3/8 24.93 0.349 5/16 21.21 0.291 8x3 1/4 17.32 0.233 3/16 13.25 0.174* 1/8 9.01 0.116* Fy = 50 ksi 57 55 54 52 50 49 46 44 41 38 35 30 26 22 19 17 15 14 12 11 10 ==== 3/8 22.37 0.349 5/16 19.08 0.291 8x2 1/4 15.62 0.233 3/16 11.97

Fy=50

y

x

x

y

ERW

1/8 8.16 0.116*

0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

264 249 238 225 212 196 179 161 142 121 100 84 71 62 54 47 42 37 33 ====

206 195 187 178 168 156 144 131 117 101 85 71 61 52 46 40 36 32 28 26 ====

176 166 159 152 144 134 124 113 102 89 76 64 54 47 41 36 32 28 25 23 ====

143 135 130 124 118 110 102 94 84 74 64 54 46 39 34 30 27 24 21 19 ====

101 97 94 91 87 83 78 73 66 59 51 43 36 31 27 24 21 19 17 15 14 ====

185 167 154 138 121 101 79 60 48 39 32 27 ====

158 143 132 120 105 89 71 55 43 35 29 24 21 ====

129 117 109 99 88 76 62 48 38 30 25 21 18 ====

91 85 80 75 68 59 49 39 31 25 20 17 15 13 ====

51 48 46 43 40 37 33 28 22 18 15 12 11 9 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 8.81 58.5 11.7 2.24 1.15 0.602 1.13 8.74 1.75 6.88 48.5 9.94 2.21 1.20 0.567 1.04 7.24 1.48 5.85 42.4 8.81 2.19 1.23 0.552 0.996 6.33 1.32 4.77 35.5 7.49 2.18 1.25 0.537 0.955 5.30 1.12 3.63 27.8 5.94 2.16 1.28 0.522 0.917 4.15 0.887 2.46 19.3 4.20 2.14 1.31 0.510 0.879 2.88 0.627 6.18 38.2 3.72 3.20 0.776 0.647 1.66 5.70 0.556 5.26 33.7 3.38 3.16 0.801 0.624 1.56 5.03 0.505 4.30 28.5 2.94 3.11 0.827 0.604 1.46 4.26 0.439 3.28 22.4 2.39 3.06 0.853 0.586 1.37 3.35 0.357 2.23 15.7 1.72 3.02 0.879 0.568 1.30 2.34 0.257

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

56

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 42.30 0.581 1/2 35.24 0.465 3/8 27.48 0.349 7x5 5/16 23.34 0.291 1/4 19.02 0.233 3/16 14.53 0.174* 1/8 9.86 0.116* Fy = 50 ksi 68 67 66 65 64 63 61 60 58 57 55 53 50 48 46 43 40 37 33 30 27 25 23 21 19 18 16 15 14 13 12 12 11 10 ==== 1/2 31.84 0.465 3/8 24.93 0.349 5/16 21.21 0.291 7x4 1/4 17.32 0.233

Fy=50

y

x

x

y

ERW

3/16 13.25

1/8 9.01

0.174* 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

351 339 332 324 314 304 294 282 270 257 243 228 213 197 181 163 145 130 116 105 95 87 79 73 67 62 58 54 50 47 44 ====

292 283 277 270 263 255 246 237 227 217 206 194 182 169 156 142 128 114 102 92 84 76 70 64 59 55 51 47 44 41 38 ====

227 220 216 211 205 199 193 186 178 171 162 154 145 135 125 115 104 93 84 75 68 62 57 52 48 45 41 39 36 34 31 29 ====

193 187 183 179 174 169 164 158 152 146 139 132 124 116 108 100 91 82 73 66 60 55 50 46 42 39 36 34 31 29 27 26 24 ====

157 152 149 146 142 138 134 130 125 120 114 108 102 96 90 83 76 68 61 55 50 46 42 38 35 33 30 28 26 25 23 22 20 ====

118 115 113 111 108 105 102 99 95 91 87 83 79 74 69 64 59 53 48 43 39 36 33 30 28 26 24 22 21 19 18 17 16 15 ====

264 253 246 238 229 219 208 196 183 170 156 141 126 109 95 84 74 66 59 53 48 44 40 37 34 ====

206 198 193 186 180 172 164 155 146 136 126 115 103 91 79 70 62 55 49 45 40 37 34 31 28 26 ====

176 169 164 159 153 147 140 133 126 117 109 100 90 80 70 61 54 49 44 39 36 32 30 27 25 23 ====

143 138 134 130 125 121 115 110 103 97 90 83 75 67 59 52 46 41 37 33 30 27 25 23 21 20 18 ====

107 104 102 99 96 92 88 84 79 74 69 64 58 52 46 41 36 32 29 26 24 21 20 18 17 15 14 ====

62 60 59 58 56 55 53 51 49 47 45 42 39 36 32 28 25 22 20 18 17 15 14 13 12 11 10 9 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 11.7 69.3 40.5 1.31 1.86 0.591 0.722 10.3 6.05 9.74 60.6 35.6 1.30 1.91 0.563 0.684 9.05 5.32 7.58 49.5 29.2 1.30 1.96 0.536 0.649 7.39 4.36 6.43 43.0 25.5 1.30 1.99 0.523 0.63 6.42 3.81 5.24 35.8 21.3 1.30 2.02 0.512 0.615 5.35 3.18 3.98 27.9 16.6 1.30 2.05 0.499 0.599 4.17 2.48 2.70 19.3 11.6 1.29 2.07 0.490 0.582 2.88 1.73 8.81 50.6 20.7 1.56 1.53 0.609 0.851 7.56 3.09 6.88 41.8 17.3 1.55 1.58 0.576 0.795 6.24 2.58 5.85 36.4 15.2 1.55 1.61 0.563 0.77 5.44 2.27 4.77 30.5 12.8 1.54 1.64 0.547 0.745 4.55 1.91 3.63 23.8 10.0 1.54 1.66 0.534 0.726 3.55 1.49 2.46 16.6 7.03 1.54 1.69 0.519 0.700 2.48 1.05

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

57

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 28.43 0.465 3/8 22.37 0.349 5/16 19.08 0.291 7x3 1/4 15.62 0.233 3/16 11.97 1/8 8.16 3/8 24.93 0.349 5/16 21.21 0.291 6x5 1/4 17.32 0.233 0.174* 0.116* Fy = 50 ksi 97 93 90 86 81 76 71 65 59 52 45 38 32 28 24 21 19 17 15 14 12 ==== 55 53 52 50 48 46 44 41 39 35 31 27 23 20 17 15 13 12 11 10 9 ====

Fy=50

y

x

x

y

ERW

3/16 13.25 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

236 222 212 201 189 175 160 143 125 106 88 74 63 54 47 41 37 33 29 ====

185 175 168 159 150 140 129 117 104 90 75 63 54 46 40 35 31 28 25 ====

158 149 143 136 128 120 111 101 90 78 66 55 47 41 35 31 28 25 22 20 ====

129 122 117 112 106 99 92 84 75 66 57 48 41 35 30 27 24 21 19 17 ====

206 200 196 191 186 180 174 168 161 153 146 138 129 120 111 101 91 81 73 66 60 54 50 46 42 39 36 34 31 29 27 26 ====

176 170 166 163 158 154 149 143 137 131 125 118 111 104 96 88 80 71 64 58 52 48 44 40 37 34 32 29 27 26 24 23 ====

143 139 136 133 129 126 122 117 113 108 103 97 92 86 80 73 67 60 54 48 44 40 37 34 31 29 27 25 23 22 20 19 18 ====

109 106 104 101 99 96 93 90 86 83 79 75 71 66 62 57 52 47 42 38 34 31 29 26 24 22 21 19 18 17 16 15 14 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 7.88 40.7 10.2 2.00 1.14 0.678 1.16 6.08 1.52 6.18 34.0 8.70 1.98 1.19 0.636 1.07 5.08 1.30 5.26 29.9 7.74 1.97 1.21 0.616 1.02 4.47 1.16 4.30 25.2 6.59 1.96 1.24 0.597 0.979 3.76 0.984 3.28 19.8 5.24 1.94 1.26 0.580 0.939 2.96 0.782 2.23 13.8 3.71 1.93 1.29 0.566 0.902 2.06 0.554 6.88 33.9 25.5 1.15 1.92 0.609 0.675 5.06 3.81 5.85 29.6 22.3 1.15 1.95 0.593 0.656 4.42 3.33 4.77 24.7 18.7 1.15 1.98 0.579 0.638 3.69 2.79 3.63 19.3 14.6 1.15 2.01 0.564 0.622 2.88 2.18

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

58

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 28.43 0.465 3/8 22.37 0.349 5/16 19.08 0.291 6x4 1/4 15.62 0.233 3/16 11.97 0.174 1/8 8.16 1/2 25.03 3/8 19.82 0.349 5/16 16.96 0.291 6x3 1/4 13.91 0.233 10.70 0.116* 0.465 Fy = 50 ksi 60 58 57 56 54 53 51 49 47 44 42 39 36 32 28 25 22 20 18 16 14 13 12 11 10 9 9 ==== 209 196 187 177 165 153 139 124 108 90 75 63 53 46 40 35 31 28 ====

Fy=50

y

x

x

y

ERW

3/16

1/8 7.31 0.116*

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

236 226 220 212 204 194 184 174 162 150 137 123 108 94 82 72 64 57 51 46 42 38 35 32 29 ====

185 178 173 167 161 154 146 138 130 121 111 101 90 79 68 60 53 48 43 38 35 32 29 27 25 ====

158 151 147 143 137 132 125 119 112 104 96 88 79 69 61 53 47 42 38 34 31 28 26 24 22 20 ====

129 124 121 117 113 108 103 98 92 86 80 73 66 59 51 45 40 36 32 29 26 24 22 20 18 17 ====

98 95 92 89 86 83 79 75 71 66 62 57 51 46 40 35 31 28 25 23 20 19 17 16 14 13 12 ====

164 155 148 141 132 123 113 102 90 77 64 54 46 40 35 30 27 24 22 ====

140 132 127 121 114 106 97 88 79 68 57 48 41 35 31 27 24 21 19 ====

115 109 104 100 94 88 81 74 66 58 49 41 35 30 26 23 21 18 16 15 ====

88 83 80 76 72 68 63 58 52 46 39 33 28 24 21 19 16 15 13 12 ====

53 51 50 48 46 44 41 39 36 32 28 23 20 17 15 13 12 10 9 8 8 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

7.88 33.9 17.7 1.38 1.50 0.697 0.890 5.06 2.64

6.18 28.3 14.9 1.38 1.55 0.655 0.830 4.23 2.23

5.26 24.8 13.1 1.38 1.58 0.636 0.803 3.70 1.96

4.30 20.9 11.1 1.37 1.61 0.617 0.775 3.12 1.66

3.28 16.4 8.76 1.37 1.63 0.600 0.749 2.45 1.31

2.23 11.4 6.15 1.36 1.66 0.587 0.725 1.70 0.918

6.95 26.8 8.65 1.76 1.12 0.778 1.21 4.00 1.29

5.48 22.7 7.47 1.74 1.17 0.724 1.10 3.39 1.12

4.68 20.1 6.66 1.74 1.19 0.699 1.05 3.00 0.995

3.84 17.0 5.70 1.73 1.22 0.678 1.01 2.54 0.851

2.93 13.4 4.55 1.72 1.25 0.656 0.966 2.00 0.679

2.00 9.43 3.23 1.71 1.27 0.636 0.929 1.41 0.482

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

59

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 200.28 0.625* 26 x 24 1/2 163.08 0.500* 3/8 123.64 0.375* 5/8 183.27 0.625 24 x 22 1/2 149.47 0.500* 3/8 113.43 5/8 166.25 22 x 20 1/2 135.86 0.500* 3/8 103.22 0.375* 5/8 149.24 0.625 1/2 122.25 0.375* 0.625 Fy = 46 ksi 720 717 716 715 713 712 710 708 707 705 703 701 699 697 695 693 691 689 687 684 682 680 677 675 672 670 667 664 662 659 656 653 650 647 644 641 638 635 631 628 1350 1340 1340 1330 1330 1320 1320 1310 1300 1300 1290 1280 1280 1270 1260 1260 1250 1240 1230 1230 1220 1210 1200 1190 1180 1180 1170 1160 1150 1140 1130 1120 1110 1100 1090 1080 1070 1060 1050 1040

Fy=46

y

x

x

y

SAW

20 x 18 3/8 93.01 0.375*

0.500

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1610 1600 1600 1590 1590 1580 1580 1580 1570 1570 1560 1560 1550 1550 1540 1530 1530 1520 1520 1510 1500 1490 1490 1480 1470 1460 1450 1450 1440 1430 1420 1410 1400 1390 1380 1370 1360 1350 1340 1330

1170 1160 1160 1160 1160 1150 1150 1150 1150 1140 1140 1140 1140 1130 1130 1130 1120 1120 1120 1110 1110 1100 1100 1100 1090 1090 1080 1080 1080 1070 1070 1060 1060 1050 1050 1040 1040 1030 1030 1020

746 744 743 742 740 739 737 736 734 733 731 730 728 726 724 722 721 719 717 715 713 711 708 706 704 702 700 697 695 692 690 687 685 682 680 677 674 671 669 666

1490 1480 1470 1470 1460 1460 1450 1450 1440 1440 1430 1420 1420 1410 1400 1400 1390 1380 1380 1370 1360 1350 1340 1340 1330 1320 1310 1300 1290 1280 1270 1270 1260 1250 1240 1230 1220 1210 1200 1190

1120 1120 1120 1110 1110 1110 1110 1100 1100 1100 1090 1090 1090 1080 1080 1080 1070 1070 1060 1060 1060 1050 1050 1040 1040 1030 1030 1020 1020 1010 1010 1000 996 990 984 977 970 964 957 950

1070 1060 1060 1060 1050 1050 1050 1040 1040 1040 1030 1030 1020 1020 1010 1010 1000 999 993 988 983 977 972 966 960 954 948 941 935 929 922 915 908 900 892 884 875 867 858 849

691 689 687 685 684 682 680 678 677 675 672 670 668 666 664 661 659 656 654 651 648 646 643 640 637 634 631 628 625 621 618 614 611 607 604 600 596 592 588 584

1210 1200 1200 1190 1190 1180 1180 1170 1160 1160 1150 1150 1140 1130 1120 1120 1110 1100 1090 1080 1080 1070 1060 1050 1040 1030 1020 1010 1000 992 982 972 961 950 940 929 918 906 895 883

991 984 980 976 972 967 963 958 953 948 943 937 932 926 920 914 908 902 895 888 882 875 868 860 853 846 838 830 822 814 806 798 789 781 772 764 755 746 736 727

661 657 656 654 652 650 648 646 644 641 639 637 634 631 629 626 623 620 617 614 611 608 604 601 597 594 590 586 582 578 574 570 566 562 557 553 548 543 539 534

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 58.9 6060 5370 1.06 9.55 0.126 0.132 905 802 47.9 5020 4450 1.06 9.64 0.124 0.129 750 665 36.3 3860 3420 1.06 9.70 0.122 0.127 576 511 53.9 4680 4110 1.07 8.73 0.138 0.144 699 614 43.9 3900 3420 1.07 8.82 0.135 0.141 582 511 33.3 3000 2630 1.07 8.89 0.133 0.139 448 393 48.9 3530 3060 1.07 7.91 0.152 0.160 527 457 39.9 2950 2560 1.07 8.00 0.149 0.156 441 382 30.3 2280 1970 1.08 8.07 0.146 0.154 340 294 43.9 2590 2210 1.08 7.10 0.169 0.179 387 330 35.9 2180 1850 1.09 7.19 0.165 0.175 326 276 27.3 1690 1440 1.08 7.25 0.162 0.171 252 215

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

70

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 140.73 0.625 20 x 16 1/2 115.45 0.500 3/8 87.91 0.375* 20 x 12 5/8 123.72 0.625 5/8 115.21 18 x 12 1/2 95.03 3/8 72.59 0.375* 16 x 12 5/8 106.71 0.625 1/2 81.42 0.500 0.625 0.500 Fy = 46 ksi 936 925 920 914 907 900 893 885 877 869 861 852 843 833 823 813 803 792 781 770 758 746 734 722 709 697 683 670 656 643 628 614 599 584 569 554 538 522 506 489 770 762 757 752 747 741 736 730 723 717 710 702 695 687 680 671 663 654 646 637 627 618 608 598 588 578 567 557 546 535 523 512 500 488 476 463 451 438 425 411

Fy=46

y

x

x

y

SAW

14 x 12 3/8 62.39 0.375

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1140 1130 1130 1120 1120 1110 1110 1100 1090 1090 1080 1070 1060 1060 1050 1040 1030 1020 1010 1000 995 985 975 966 955 945 935 924 913 902 891 879 868 856 844 832 819 807 794 781

936 928 924 920 915 911 906 901 895 890 884 878 872 866 859 853 846 839 832 824 817 809 801 793 785 777 769 760 751 742 733 724 715 705 696 686 676 666 656 646

643 639 637 635 633 631 629 626 623 620 617 614 611 607 604 600 596 592 588 584 580 576 572 567 563 558 553 548 543 538 533 527 522 516 511 505 499 493 487 481

1000 994 988 981 974 967 960 952 943 934 925 916 906 896 886 875 864 853 841 830 817 805 792 779 766 752 739 725 710 696 681 665 650 634 618 602 585 569 551 534

550 546 543 543 537 534 531 527 524 520 516 512 508 503 499 494 489 484 479 474 468 462 456 450 444 438 431 424 417 410 403 394 385 376 367 358 348 339 329 319

867 857 852 846 840 833 826 819 812 804 796 787 778 769 760 751 741 731 720 709 698 687 676 664 652 640 627 615 602 589 575 561 547 533 519 504 489 474 458 442

660 652 648 644 639 634 629 623 618 612 606 599 593 586 579 571 564 556 548 540 532 523 514 505 496 487 478 468 458 448 438 427 417 406 395 384 372 361 349 337

505 500 496 493 490 486 482 478 474 469 464 460 455 450 444 439 433 427 421 415 409 403 396 389 383 376 369 361 354 346 339 331 323 315 307 298 290 281 272 263

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 41.4 2360 1680 1.19 6.37 0.175 0.197 352 251 33.9 1990 1410 1.19 6.46 0.170 0.192 297 211 25.8 1540 1100 1.18 6.52 0.168 0.188 230 164 36.4 1890 864 1.48 4.87 0.193 0.253 282 129 33.9 1450 783 1.36 4.81 0.210 0.260 217 117 27.9 1240 668 1.36 4.89 0.202 0.251 185 99.8 21.3 971 524 1.36 4.95 0.197 0.244 145 78.2 31.4 1090 702 1.25 4.73 0.230 0.268 163 105 23.9 678 536 1.12 4.73 0.247 0.268 101 80.0 18.3 534 422 1.12 4.80 0.240 0.260 79.7 63.0

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

71

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 17.27 0.349 5/16 14.83 0.291 6x2 1/4 12.21 0.233 3/16 9.42 0.174 1/8 6.46 1/2 25.03 3/8 19.82 0.349 5x4 5/16 16.96 0.291 1/4 13.91 0.233 0.116* 0.465 Fy = 50 ksi 47 44 41 39 36 32 27 21 17 14 11 9 8 7 ==== 209 199 193 186 178 170 161 151 140 129 117 104 91 78 68 60 53 47 43 38 35 32 29 27 ====

Fy=50

y

x

x

y

ERW

3/16 10.70 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

143 129 118 106 92 76 58 45 35 29 24 20 ====

123 111 102 92 81 68 53 41 32 26 22 18 15 ====

101 92 85 77 68 58 47 36 28 23 19 16 14 ====

77 70 65 60 53 46 38 29 23 19 15 13 11 ====

164 157 153 148 142 136 129 121 114 105 97 87 77 67 58 51 45 41 36 33 30 27 25 23 21 ====

140 135 131 126 122 116 111 104 98 91 84 76 67 59 51 45 40 36 32 29 26 24 22 20 18 ====

115 110 107 104 100 96 91 86 81 76 70 64 57 50 44 38 34 30 27 25 22 20 19 17 16 15 ====

88 84 82 80 77 74 70 67 63 59 54 50 45 40 35 30 27 24 22 19 18 16 15 14 12 12 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

4.78 17.1 2.75 2.49 0.759 0.839 1.74 2.55 0.411

4.10 15.3 2.52 2.46 0.784 0.804 1.63 2.28 0.376

3.37 13.1 2.21 2.43 0.809 0.772 1.52 1.96 0.330

2.58 10.5 1.80 2.42 0.835 0.737 1.43 1.57 0.269

1.77 7.42 1.31 2.38 0.861 0.716 1.35 1.11 0.196

6.95 21.2 14.8 1.20 1.46 0.820 0.939 3.17 2.21

5.48 17.9 12.6 1.19 1.52 0.765 0.870 2.67 1.88

4.68 15.8 11.1 1.19 1.54 0.741 0.843 2.36 1.66

3.84 13.4 9.46 1.19 1.57 0.716 0.812 2.00 1.41

2.93 10.6 7.48 1.19 1.60 0.691 0.783 1.58 1.12

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

60

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 1/2 21.63 0.465 3/8 17.27 0.349 5/16 14.83 0.291 5x3 1/4 12.21 0.233 3/16 9.42 0.174 Fy = 50 ksi 77 73 70 67 63 59 55 50 45 39 33 28 24 20 18 16 14 12 11 10 ==== 1/8 6.46 0.116* 1/4 11.36 0.233 5 x 2 1/2 3/16 8.78 0.174

Fy=50

y

x

x

y

ERW

1/8 6.03 0.116*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

181 169 161 152 142 130 118 104 90 74 61 52 44 38 33 29 26 23 ====

143 135 129 122 114 106 97 87 76 64 53 45 38 33 29 25 22 20 18 ====

123 116 111 105 99 92 84 76 67 58 48 40 34 30 26 23 20 18 16 ====

101 95 91 87 82 76 70 64 57 49 41 34 29 25 22 19 17 15 14 ====

51 49 47 45 43 41 38 35 31 28 24 20 17 15 13 11 10 9 8 7 ====

94 87 83 77 71 64 57 49 40 32 27 23 19 17 14 13 ====

72 67 64 60 55 50 45 39 32 26 21 18 15 13 12 10 9 ====

47 45 43 41 38 35 31 27 23 19 16 13 11 10 8 7 7 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 6.02 16.4 7.14 1.52 1.09 0.918 1.26 2.45 1.07 4.78 14.1 6.23 1.50 1.14 0.848 1.15 2.11 0.93 4.10 12.6 5.59 1.50 1.17 0.813 1.10 1.88 0.835 3.37 10.7 4.81 1.49 1.19 0.787 1.05 1.60 0.718 2.58 8.53 3.85 1.49 1.22 0.756 1.01 1.27 0.575 1.77 6.03 2.75 1.48 1.25 0.734 0.965 0.900 0.411 3.14 9.40 3.13 1.73 0.998 0.835 1.25 1.40 0.467 2.41 7.51 2.53 1.72 1.02 0.802 1.19 1.12 0.378 1.65 5.34 1.82 1.71 1.05 0.772 1.13 0.797 0.272

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

61

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 14.72 0.349 5/16 12.70 0.291 5x2 1/4 10.51 0.233 3/16 8.15 0.174 1/8 5.61 0.116* 3/8 14.72 0.349 5/16 12.70 0.291 Fy = 50 ksi 106 99 95 90 84 78 71 63 55 47 39 32 28 24 21 18 16 14 ==== 4x3 1/4 10.51 0.233 3/16 8.15 0.174 1/8 5.61 0.116 5/16 11.64 0.291

Fy=50

y

x

x

y

ERW

4 x 2 1/2 1/4 9.66 0.233 3/16 7.51 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

123 110 101 90 77 63 48 37 29 24 20 16 ====

106 95 87 79 68 57 44 34 27 22 18 15 ====

87 79 73 66 58 49 39 30 24 19 16 13 11 ====

67 61 57 51 46 39 32 25 19 16 13 11 9 ====

44 41 39 36 32 28 23 18 14 11 9 8 7 6 ====

123 115 110 104 97 89 81 72 63 52 43 36 31 27 23 20 18 16 ====

87 82 79 75 70 65 60 54 47 40 34 28 24 21 18 16 14 13 11 ====

67 63 61 58 54 51 47 42 38 33 27 23 19 17 15 13 11 10 9 ====

46 44 42 40 38 35 32 29 26 23 19 16 14 12 10 9 8 7 6 6 ====

97 89 84 78 71 64 56 46 37 30 25 21 18 15 13 ====

80 74 70 65 60 54 47 40 32 26 22 18 16 13 12 10 ====

62 57 54 51 47 42 37 32 26 21 18 15 13 11 9 8 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

4.09 10.3 2.27 2.13 0.746 0.993 1.80 1.54 0.339

3.52 9.34 2.09 2.11 0.771 0.942 1.68 1.39 0.312

2.91 8.08 1.84 2.10 0.796 0.900 1.58 1.21 0.275

2.24 6.50 1.51 2.07 0.822 0.862 1.48 0.971 0.225

1.54 4.65 1.10 2.06 0.848 0.828 1.40 0.694 0.164

4.09 7.92 5.00 1.26 1.11 1.03 1.23 1.18 0.747

3.52 7.13 4.52 1.26 1.13 0.987 1.17 1.06 0.675

2.91 6.15 3.91 1.25 1.16 0.946 1.12 0.918 0.584

2.24 4.93 3.16 1.25 1.19 0.909 1.06 0.736 0.472

1.54 3.52 2.27 1.25 1.21 0.875 1.02 0.526 0.339

3.23 6.13 2.89 1.46 0.946 1.05 1.40 0.915 0.432

2.67 5.32 2.53 1.45 0.973 1.00 1.32 0.794 0.378

2.06 4.30 2.06 1.44 0.999 0.958 1.25 0.642 0.308

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy. Note: Double Horizontal Line indicates k l/r limit of 200.

62

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/8 12.17 0.349 5/16 10.58 0.291 4x2 1/4 8.81 0.233 3/16 6.87 0.174 1/8 4.75 3/8 12.17 5/16 10.58 0.291 3 1/2 x 2 1/2 1/4 8.81 0.233 3/16 6.87 0.174 0.116 0.349 Fy = 50 ksi 39 35 33 30 27 23 19 15 11 9 8 6 5 ==== 102 93 88 81 73 65 55 45 35 29 24 20 17 15 13 ====

Fy=50

y

x

x

y

ERW

1/8 4.75 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

102 91 83 73 63 51 38 29 23 19 15 13 ====

88 79 73 65 56 46 35 27 21 17 14 12 ====

73 66 61 55 48 40 31 24 19 15 13 11 ====

57 51 48 43 38 32 26 20 16 13 10 9 7 ====

88 81 76 71 64 57 50 41 32 26 22 18 16 13 12 ====

73 68 64 59 54 49 42 36 29 23 19 16 14 12 10 ====

57 53 50 46 43 38 34 29 23 19 16 13 11 10 8 7 ====

39 36 34 32 30 27 24 21 17 14 11 10 8 7 6 5 ====

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

3.39 5.59 1.79 1.77 0.727 1.21 1.89 0.835 0.267

2.94 5.12 1.66 1.76 0.752 1.15 1.77 0.765 0.248

2.44 4.49 1.48 1.74 0.778 1.09 1.65 0.670 0.221

1.89 3.66 1.22 1.73 0.804 1.03 1.55 0.547 0.182

1.30 2.65 0.898 1.72 0.830 0.981 1.45 0.396 0.134

3.39 4.74 2.75 1.31 0.902 1.25 1.54 0.708 0.411

2.94 4.34 2.53 1.31 0.929 1.19 1.45 0.648 0.378

2.44 3.79 2.23 1.30 0.956 1.13 1.37 0.566 0.333

1.89 3.09 1.82 1.30 0.983 1.07 1.3 0.461 0.272

1.30 2.23 1.33 1.29 1.01 1.02 1.22 0.333 0.199

Note: Double Horizontal Line indicates k l/r limit of 200.

63

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/16 9.51 0.291 1/4 7.96 0.233 3 x 2 1/2 3/16 6.23 0.174 1/8 4.33 0.116 5/16 8.45 0.291 1/4 7.11 0.233 Fy = 50 ksi 59 53 49 43 37 31 23 18 14 11 9 8 ==== 3x2 3/16 5.59 0.174 1/8 3.90 0.116 1/4 6.26 0.233 3 x 1 1/2 3/16 4.96

Fy=50

y

x

x

y

ERW

1/8 3.48 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

79 73 68 63 57 51 43 35 28 23 19 16 13 11 10 ====

66 61 58 53 49 43 38 31 25 20 17 14 12 10 9 ====

51 47 45 42 38 34 30 25 20 16 14 11 10 8 7 6 ====

36 33 31 29 27 24 21 18 15 12 10 8 7 6 5 5 ====

71 63 57 51 43 35 26 20 16 13 11 9 ====

46 42 38 35 30 25 20 15 12 10 8 7 ====

32 29 27 24 21 18 15 11 9 7 6 5 4 ====

52 44 38 31 22 16 11 9 7 ====

41 35 31 25 19 13 10 8 6 ====

29 25 22 19 14 10 8 6 5 4 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 2.64 2.91 2.17 1.16 0.907 1.36 1.52 0.435 0.324 2.21 2.57 1.93 1.15 0.935 1.29 1.43 0.384 0.288 1.71 2.11 1.59 1.15 0.962 1.22 1.34 0.315 0.237 1.19 1.54 1.16 1.15 0.990 1.16 1.28 0.230 0.173 2.35 2.38 1.23 1.39 0.724 1.48 1.91 0.355 0.184 1.97 2.12 1.11 1.38 0.750 1.39 1.77 0.317 0.166 1.54 1.76 0.931 1.37 0.777 1.31 1.65 0.263 0.139 1.07 1.30 0.692 1.37 0.804 1.23 1.55 0.194 0.103 1.74 1.68 0.541 1.76 0.558 1.55 2.41 0.251 0.081 1.37 1.42 0.466 1.75 0.584 1.45 2.20 0.212 0.070 0.96 1.06 0.355 1.73 0.610 1.36 2.03 0.158 0.053

Note: Double Horizontal Line indicates k l/r limit of 200.

64

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 3/16 4.32 0.174 3x1 1/8 3.05 0.116 1/4 5.41 0.233 2 1/2 x 1 1/2 3/16 4.32 0.174 1/8 3.05 0.116 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 36 26 19 11 7 5 ==== 25 19 14 9 6 4 ==== 45 38 33 26 19 13 9 7 6 ==== 36 30 26 22 16 11 8 6 5 ==== 25 22 19 16 12 9 6 5 4 ==== 31 26 22 18 13 9 7 5 4 ==== 22 18 16 13 10 7 5 4 3 ==== 25 18 13 7 5 3 ==== 3/16 3.68 0.174 2 x 1 1/2 1/8 2.63 0.116 3/16 3.04 0.174

Fy=50

y

x

x

y

ERW

2x1 1/8 2.20 0.116

18 14 10 6 4 3 ====

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 1.19 1.07 0.172 2.49 0.380 1.67 3.46 0.160 0.026 0.84 0.817 0.138 2.43 0.405 1.54 3.04 0.122 0.021 1.51 1.03 0.447 1.52 0.544 1.83 2.53 0.154 0.067 1.19 0.881 0.389 1.50 0.571 1.69 2.29 0.132 0.058 0.84 0.668 0.299 1.49 0.597 1.57 2.11 0.100 0.045 1.02 0.494 0.312 1.26 0.553 2.06 2.45 0.074 0.047 0.72 0.383 0.244 1.25 0.580 1.88 2.21 0.057 0.036 0.84 0.349 0.112 1.77 0.364 2.41 3.75 0.052 0.017 0.61 0.280 0.092 1.74 0.389 2.18 3.32 0.042 0.014

Note: Double Horizontal Line indicates k l/r limit of 200.

65

HSS / Structural Steel Tubing

NOTES

66

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 259.83 0.625* 32 x 32 1/2 210.72 0.500* 3/8 159.37 0.375* 5/8 242.82 0.625* 30 x 30 1/2 197.11 0.500* 3/8 149.16 5/8 225.80 28 x 28 1/2 183.50 0.500* 3/8 138.95 0.375* 5/8 208.79 0.625* 1/2 0.375* 0.625* Fy = 46 ksi 806 804 803 802 801 800 799 798 797 796 794 793 792 790 789 788 786 785 784 782 781 779 778 776 774 773 771 770 768 766 764 763 761 759 757 755 753 751 749 747 1730 1720 1720 1710 1710 1710 1700 1700 1700 1690 1690 1690 1680 1680 1670 1670 1670 1660 1660 1650 1650 1640 1640 1630 1630 1620 1620 1610 1610 1600 1590 1590 1580 1580 1570 1560 1560 1550 1550 1540

Fy=46

SAW

26 x 26 3/8 128.74 0.375*

169.89 0.500*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1840 1830 1830 1830 1820 1820 1820 1820 1810 1810 1810 1800 1800 1800 1790 1790 1790 1780 1780 1780 1770 1770 1760 1760 1760 1750 1750 1740 1740 1730 1730 1720 1720 1710 1710 1700 1700 1690 1690 1680

1310 1300 1300 1300 1300 1290 1290 1290 1290 1290 1290 1280 1280 1280 1280 1270 1270 1270 1270 1270 1260 1260 1260 1250 1250 1250 1250 1240 1240 1240 1240 1230 1230 1230 1220 1220 1220 1210 1210 1210

828 826 825 824 823 822 821 820 819 818 817 816 814 813 812 811 810 808 807 806 804 803 801 800 799 797 796 794 793 791 789 788 786 785 783 781 779 778 776 774

1780 1780 1780 1770 1770 1770 1760 1760 1760 1750 1750 1750 1740 1740 1740 1730 1730 1720 1720 1720 1710 1710 1700 1700 1690 1690 1680 1680 1670 1670 1660 1660 1650 1650 1640 1640 1630 1630 1620 1610

1270 1270 1260 1260 1260 1260 1260 1250 1250 1250 1250 1250 1240 1240 1240 1240 1230 1230 1230 1230 1220 1220 1220 1210 1210 1210 1210 1200 1200 1200 1190 1190 1190 1180 1180 1180 1170 1170 1170 1160

1230 1230 1230 1220 1220 1220 1220 1210 1210 1210 1210 1210 1200 1200 1200 1190 1190 1190 1190 1180 1180 1180 1170 1170 1170 1160 1160 1160 1150 1150 1150 1140 1140 1140 1130 1130 1120 1120 1120 1110

783 781 780 779 778 777 776 774 773 772 770 769 768 766 765 763 762 760 759 757 755 754 752 750 748 747 745 743 741 739 737 735 733 731 729 727 725 722 720 718

1660 1660 1650 1650 1650 1640 1640 1640 1630 1630 1630 1620 1620 1610 1610 1600 1600 1590 1590 1580 1580 1570 1560 1560 1550 1540 1530 1520 1520 1510 1500 1490 1480 1470 1470 1460 1450 1440 1430 1420

1190 1190 1180 1180 1180 1180 1180 1170 1170 1170 1170 1160 1160 1160 1150 1150 1150 1140 1140 1140 1130 1130 1130 1120 1120 1120 1110 1110 1110 1100 1100 1090 1090 1090 1080 1080 1070 1070 1060 1060

759 757 756 755 753 752 751 749 748 747 745 744 742 740 739 737 736 734 732 730 728 726 725 723 721 719 717 714 712 710 708 706 703 701 699 696 694 691 689 686

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

76.4 12300 12.7 0.099 1840

61.9 10100 12.8 0.098 1510

46.8 7750 12.9 0.097 1160

71.4 10100 11.9 0.106 1510

57.9 8320 12.0 0.104 1240

43.8 6370 12.1 0.103 951

66.4 8140 11.1 0.114 1220

53.9 6730 11.2 0.112 1010

40.8 5150 11.2 0.111 769

61.4 6460 10.3 0.124 965

49.9 5350 10.4 0.121 799

37.8 4110 10.4 0.120 614

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

67

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 191.78 0.625 24 x 24 1/2 156.28 0.500* 3/8 118.53 0.375* 5/8 174.76 0.625 22 x 22 1/2 142.67 0.500* 3/8 108.32 5/8 157.75 20 x 20 1/2 129.06 0.500 3/8 98.12 0.375* 5/8 140.73 0.625 1/2 0.375* 0.625 Fy = 46 ksi 706 704 702 701 699 698 696 694 693 691 689 687 685 683 681 679 677 675 672 670 668 665 663 660 658 655 652 650 647 644 641 638 635 632 629 626 622 619 616 612 1280 1270 1270 1260 1260 1250 1250 1240 1240 1230 1220 1220 1210 1210 1200 1190 1180 1180 1170 1160 1150 1150 1140 1130 1120 1110 1100 1100 1090 1080 1070 1060 1050 1040 1030 1020 1010 998 988 977

Fy=46

SAW

18 x 18 3/8 87.91 0.375*

115.45 0.500

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1560 1550 1540 1540 1530 1530 1520 1520 1510 1510 1500 1500 1490 1480 1480 1470 1460 1460 1450 1440 1440 1430 1420 1410 1410 1400 1390 1380 1370 1360 1360 1350 1340 1330 1320 1310 1300 1290 1280 1270

1150 1140 1140 1140 1140 1130 1130 1130 1120 1120 1120 1120 1110 1110 1110 1100 1100 1100 1090 1090 1090 1080 1080 1070 1070 1070 1060 1060 1050 1050 1040 1040 1030 1030 1020 1020 1010 1010 1000 997

734 731 730 729 727 726 724 723 721 720 718 716 715 713 711 709 707 705 703 701 699 697 695 693 691 688 686 684 681 679 676 674 671 668 666 663 660 657 654 651

1420 1410 1410 1400 1400 1390 1390 1380 1380 1370 1360 1360 1350 1340 1340 1330 1320 1320 1310 1300 1300 1290 1280 1270 1260 1260 1250 1240 1230 1220 1210 1200 1190 1180 1180 1170 1160 1150 1140 1130

1100 1100 1090 1090 1090 1090 1080 1080 1080 1070 1070 1070 1060 1060 1060 1050 1050 1040 1040 1040 1030 1030 1020 1020 1010 1010 1000 998 993 988 982 977 971 965 960 953 946 938 930 922

1050 1040 1040 1030 1030 1020 1020 1020 1010 1010 1000 996 991 985 980 974 968 963 957 950 944 938 931 925 918 911 904 897 890 882 875 867 859 852 844 836 827 819 811 802

677 674 672 671 669 667 665 663 662 659 657 655 653 651 648 646 643 641 638 636 633 630 627 624 621 618 615 612 608 605 602 598 595 591 587 583 579 575 571 567

1140 1130 1130 1120 1120 1110 1110 1100 1100 1090 1090 1080 1070 1070 1060 1050 1040 1040 1030 1020 1010 1000 995 986 978 969 959 950 941 931 921 911 901 891 881 870 859 848 837 826

936 929 925 921 917 913 909 904 899 894 889 884 879 873 868 862 856 850 843 837 830 824 817 810 803 796 788 781 773 765 758 750 741 733 725 716 708 699 690 681

645 641 640 638 636 634 632 630 627 625 623 620 617 615 612 609 606 603 600 597 594 590 587 583 580 576 572 568 565 560 556 552 548 543 539 534 529 524 519 514

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10

6 4

56.4 5030 9.44 0.135 751

45.9 4170 9.53 0.132 623

34.8 3210 9.60 0.130 479

51.4 3820 8.62 0.148 570

41.9 3190 8.72 0.144 476

31.8 2460 8.78 0.142 367

46.4 2830 7.81 0.164 423

37.9 2370 7.90 0.160 354

28.8 1830 7.97 0.157 273

41.4 2020 6.99 0.184 302

33.9 1700 7.08 0.179 254

25.8 1320 7.15 0.176 197

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

68

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 225.80 0.625* 32 x 24 1/2 183.50 0.500* 3/8 138.95 0.375* 5/8 217.30 0.625* 30 x 24 1/2 176.70 0.500* Fy = 46 ksi 1210 1200 1200 1200 1200 1190 1190 1190 1190 1180 1180 1180 1180 1170 1170 1170 1160 1160 1160 1150 1150 1150 1140 1140 1130 1130 1130 1120 1120 1110 1110 1100 1100 1100 1090 1090 1080 1080 1070 1070 3/8 133.84 0.375* 5/8 208.79 0.625* 28 x 24 1/2 169.89 0.500*

Fy=46

y

x

x

y

SAW

3/8 128.74 0.375*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1680 1670 1670 1670 1660 1660 1650 1650 1640 1640 1640 1630 1630 1620 1620 1610 1600 1600 1590 1590 1580 1580 1570 1560 1560 1550 1540 1540 1530 1520 1510 1510 1500 1490 1480 1480 1470 1460 1450 1440

1230 1220 1220 1220 1220 1210 1210 1210 1210 1200 1200 1200 1190 1190 1190 1180 1180 1180 1170 1170 1170 1160 1160 1160 1150 1150 1140 1140 1140 1130 1130 1120 1120 1110 1110 1110 1100 1100 1090 1090

781 779 778 777 775 774 772 771 770 768 767 765 763 762 760 758 756 755 753 751 749 747 745 743 741 739 736 734 732 730 727 725 722 720 717 715 712 710 707 704

1660 1650 1650 1640 1640 1630 1630 1630 1620 1620 1610 1610 1600 1600 1590 1590 1580 1570 1570 1560 1560 1550 1540 1540 1530 1520 1520 1510 1500 1500 1490 1480 1470 1470 1460 1450 1440 1430 1430 1420

770 768 767 765 764 763 761 760 758 757 755 754 752 750 749 747 745 743 741 739 737 735 733 731 729 727 725 722 720 718 715 713 711 708 705 703 700 698 695 692

1630 1630 1620 1620 1610 1610 1610 1600 1600 1590 1590 1580 1580 1570 1570 1560 1560 1550 1540 1540 1530 1530 1520 1510 1510 1500 1490 1480 1480 1470 1460 1450 1450 1440 1430 1420 1410 1410 1400 1390

1190 1180 1180 1180 1180 1180 1170 1170 1170 1160 1160 1160 1160 1150 1150 1150 1140 1140 1140 1130 1130 1130 1120 1120 1110 1110 1110 1100 1100 1090 1090 1080 1080 1070 1070 1060 1060 1050 1050 1040

759 756 755 754 752 751 750 748 747 745 744 742 740 738 737 735 733 731 729 727 725 723 721 719 717 715 712 710 708 705 703 700 698 695 693 690 688 685 682 679

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 66.4 9880 6390 1.24 9.81 0.108 0.125 1480 954 53.9 8160 5280 1.24 9.89 0.106 0.123 1220 788 40.8 6250 4050 1.24 9.96 0.104 0.121 933 605 63.9 8480 6050 1.18 9.73 0.113 0.127 1270 903 51.9 7010 5000 1.18 9.82 0.111 0.125 1050 747 39.3 5380 3840 1.18 9.88 .110 0.123 803 573 61.4 7210 5710 1.12 9.65 0.119 0.129 1080 853 49.9 5970 4730 1.12 9.73 0.117 0.127 892 706 37.8 4580 3630 1.12 9.79 0.116 0.125 684 542

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

69

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 259.83 0.625* 32 x 32 1/2 210.72 0.500* 3/8 159.37 0.375* 5/8 242.82 0.625* 30 x 30 1/2 197.11 0.500* 3/8 149.16 5/8 225.80 28 x 28 1/2 183.50 0.500* 3/8 138.95 0.375* 5/8 208.79 0.625* 1/2 169.89 0.375* 0.625* Fy = 50 ksi 855 853 852 851 850 848 847 846 845 843 842 841 839 838 836 835 833 832 830 829 827 825 824 822 820 818 817 815 813 811 809 807 805 803 801 799 797 795 793 790 1830 1830 1820 1820 1820 1810 1810 1810 1800 1800 1790 1790 1790 1780 1780 1770 1770 1760 1760 1750 1750 1740 1740 1730 1730 1720 1710 1710 1700 1700 1690 1680 1680 1670 1660 1660 1650 1640 1630 1630

Fy=50

SAW

26 x 26 3/8 128.74 0.375*

0.500*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1950 1950 1940 1940 1940 1940 1930 1930 1930 1920 1920 1910 1910 1910 1900 1900 1900 1890 1890 1880 1880 1870 1870 1870 1860 1860 1850 1850 1840 1840 1830 1830 1820 1820 1810 1800 1800 1790 1790 1780

1390 1380 1380 1380 1380 1370 1370 1370 1370 1370 1360 1360 1360 1360 1350 1350 1350 1350 1340 1340 1340 1340 1330 1330 1330 1320 1320 1320 1310 1310 1310 1310 1300 1300 1300 1290 1290 1280 1280 1280

878 876 875 874 873 872 871 869 868 867 866 865 863 862 861 859 858 856 855 854 852 850 849 847 846 844 843 841 839 837 836 834 832 830 828 827 825 823 821 819

1890 1890 1890 1880 1880 1880 1870 1870 1870 1860 1860 1850 1850 1850 1840 1840 1830 1830 1830 1820 1820 1810 1810 1800 1800 1790 1790 1780 1770 1770 1760 1760 1750 1750 1740 1730 1730 1720 1710 1710

1350 1340 1340 1340 1340 1340 1330 1330 1330 1330 1320 1320 1320 1320 1310 1310 1310 1310 1300 1300 1300 1290 1290 1290 1280 1280 1280 1270 1270 1270 1260 1260 1260 1250 1250 1240 1240 1240 1230 1230

1310 1300 1300 1300 1300 1290 1290 1290 1290 1280 1280 1280 1280 1270 1270 1270 1260 1260 1260 1250 1250 1250 1240 1240 1240 1230 1230 1230 1220 1220 1220 1210 1210 1200 1200 1190 1190 1190 1180 1180

831 829 828 826 825 824 822 821 820 818 817 815 814 812 811 809 807 806 804 802 800 798 796 794 792 790 788 786 784 782 780 778 775 773 771 769 766 764 761 759

1770 1760 1760 1760 1750 1750 1740 1740 1740 1730 1730 1720 1720 1710 1710 1700 1700 1690 1690 1680 1670 1670 1660 1660 1650 1640 1640 1630 1620 1620 1610 1600 1590 1590 1580 1570 1560 1550 1540 1530

1260 1260 1260 1260 1250 1250 1250 1250 1240 1240 1240 1230 1230 1230 1220 1220 1220 1210 1210 1210 1200 1200 1200 1190 1190 1180 1180 1180 1170 1170 1160 1160 1150 1150 1140 1140 1130 1130 1120 1120

806 803 802 801 799 798 796 795 793 792 790 788 787 785 783 781 780 778 776 774 772 770 767 765 763 761 759 756 754 751 749 747 744 741 739 736 733 731 728 725

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

76.4 12300 12.7 0.099 1840

61.9 10100 12.8 0.098 1510

46.8 7750 12.9 0.097 1160

71.4 10100 11.9 0.106 1510

57.9 8320 12.0 0.104 1240

43.8 6370 12.1 0.103 951

66.4 8140 11.1 0.114 1220

53.9 6730 11.2 0.112 1010

40.8 5150 11.2 0.111 769

61.4 6460 10.3 0.124 965

49.9 5350 10.4 0.121 799

37.8 4110 10.4 0.120 614

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

72

HSS / Square Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 191.78 0.625 24 x 24 1/2 156.28 0.500* 3/8 118.53 0.375* 5/8 174.76 0.625 22 x 22 1/2 142.67 0.500* 3/8 108.32 5/8 157.75 20 x 20 1/2 129.06 0.500* 3/8 98.12 0.375* 5/8 140.73 0.625 1/2 115.45 0.375* 0.625 Fy = 50 ksi 750 747 745 744 742 740 739 737 735 733 731 729 727 724 722 720 718 715 713 710 707 705 702 699 696 693 690 687 384 681 678 674 671 668 664 661 657 653 649 646 1390 1380 1380 1370 1370 1360 1350 1350 1340 1330 1330 1320 1310 1310 1300 1290 1280 1270 1260 1260 1250 1240 1230 1220 1210 1200 1190 1180 1170 1160 1150 1140 1120 1110 1100 1090 1080 1070 1050 1040

Fy=50

SAW

18 x 18 3/8 87.91 0.375*

0.500

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1690 1680 1680 1670 1670 1660 1660 1650 1640 1640 1630 1620 1620 1610 1600 1590 1590 1580 1570 1560 1550 1550 1540 1530 1520 1510 1500 1490 1480 1470 1460 1450 1440 1430 1420 1410 1400 1390 1380 1370

1220 1210 1210 1210 1210 1200 1200 1200 1190 1190 1190 1190 1180 1180 1170 1170 1170 1160 1160 1150 1150 1150 1140 1140 1130 1130 1120 1120 1110 1110 1100 1100 1090 1090 1080 1080 1070 1060 1060 1050

779 776 775 773 772 770 769 767 765 763 762 760 758 756 754 752 750 748 745 743 741 739 736 734 731 729 726 723 721 718 715 712 710 707 704 701 697 694 691 688

1540 1530 1530 1520 1520 1510 1500 1500 1490 1490 1480 1470 1460 1460 1450 1440 1430 1430 1420 1410 1400 1390 1380 1370 1360 1350 1340 1340 1330 1310 1300 1290 1280 1270 1260 1250 1240 1230 1220 1200

1170 1160 1160 1160 1160 1150 1150 1150 1140 1140 1140 1130 1130 1120 1120 1120 1110 1110 1100 1100 1090 1090 1080 1080 1070 1070 1060 1060 1050 1050 1040 1030 1030 1020 1010 1010 1000 994 987 980

1120 1110 1110 1110 1100 1100 1090 1090 1090 1080 1080 1070 1070 1070 1060 1050 1050 1040 1030 1030 1020 1010 1010 997 990 982 974 965 957 948 940 931 922 913 904 895 885 876 866 856

719 716 714 712 710 708 706 704 702 700 698 695 693 690 688 685 682 379 676 673 670 667 664 661 657 654 650 647 643 639 636 632 628 624 619 615 611 606 602 597

1240 1230 1230 1220 1220 1210 1200 1200 1190 1180 1180 1170 1160 1150 1150 1140 1130 1120 1110 1100 1090 1080 1070 1060 1050 1040 1030 1020 1010 998 987 976 964 952 940 928 915 903 890 877

1020 1010 1010 1000 996 991 986 981 976 970 964 958 952 946 939 932 925 918 911 904 896 888 881 872 864 856 847 839 830 821 812 803 793 784 774 764 754 744 734 724

685 681 680 678 675 673 671 669 666 663 661 658 655 652 649 646 643 639 636 632 629 625 621 617 613 609 605 601 596 592 587 582 577 572 567 562 557 551 546 540

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

56.4 5030 9.44 0.135 751

45.9 4170 9.53 0.132 623

34.8 3210 9.60 0.130 479

51.4 3820 8.62 0.148 570

41.9 3190 8.72 0.144 476

31.8 2460 8.78 0.142 367

46.4 2830 7.81 0.164 423

37.9 2370 7.90 0.160 354

28.8 1830 7.97 0.157 273

41.4 2020 6.99 0.184 302

33.9 1700 7.08 0.179 254

25.8 1320 7.15 0.176 197

*Slender element section. Width-Thickness and Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

73

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 225.80 0.625* 32 x 24 1/2 183.50 0.500* 3/8 138.95 0.375* 5/8 217.30 0.625* 30 x 24 1/2 176.70 0.500* Fy = 50 ksi 1280 1280 1280 1270 1270 1270 1270 1260 1260 1260 1250 1250 1250 1240 1240 1240 1230 1230 1230 1220 1220 1210 1210 1210 1200 1200 1190 1190 1180 1180 1170 1170 1160 1160 1150 1150 1140 1140 1130 1130 3/8 133.84 0.375* 5/8 208.79 0.625* 28 x 24 1/2 169.89 0.500*

Fy=50

y

x

x

y

SAW

3/8 128.74 0.375*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1800 1790 1790 1780 1780 1780 1770 1770 1760 1760 1750 1750 1740 1730 1730 1720 1720 1710 1700 1700 1690 1680 1680 1670 1660 1650 1650 1640 1630 1620 1610 1610 1600 1590 1580 1570 1560 1550 1540 1540

1300 1300 1300 1290 1290 1290 1290 1280 1280 1280 1270 1270 1270 1260 1260 1260 1250 1250 1250 1240 1240 1230 1230 1230 1220 1220 1210 1210 1200 1200 1190 1190 1180 1180 1170 1170 1160 1160 1150 1150

829 826 825 824 822 821 819 818 816 814 813 811 809 807 805 804 802 800 797 795 793 792 789 787 784 782 779 777 774 772 769 767 764 761 758 756 753 750 747 744

1780 1770 1770 1760 1760 1750 1750 1740 1740 1730 1730 1720 1720 1710 1700 1700 1690 1680 1680 1670 1660 1660 1650 1640 1640 1630 1620 1610 1600 1600 1590 1580 1570 1560 1550 1540 1530 1530 1520 1510

817 825 813 811 810 809 807 806 804 803 801 799 797 795 793 792 790 787 785 783 781 779 777 774 772 769 767 765 762 759 757 754 751 749 746 743 740 737 734 731

1750 1740 1740 1740 1730 1730 1720 1720 1710 1710 1700 1700 1690 1680 1680 1670 1660 1660 1650 1640 1640 1630 1620 1620 1610 1600 1590 1580 1580 1570 1560 1550 1540 1530 1520 1510 1500 1500 1490 1480

1260 1260 1260 1250 1250 1250 1250 1240 1240 1240 1230 1230 1230 1220 1220 1220 1210 1210 1200 1200 1200 1190 1190 1180 1180 1180 1170 1170 1160 1160 1150 1150 1140 1140 1130 1130 1120 1110 1110 1100

805 802 801 800 798 797 795 794 792 790 788 787 785 783 781 779 777 775 773 771 768 766 764 761 759 757 754 752 749 746 744 741 738 735 732 729 726 723 720 717

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 66.4 9880 6390 1.24 9.81 0.108 0.125 1480 954 53.9 8160 5280 1.24 9.89 0.106 0.123 1220 788 40.8 6250 4050 1.24 9.96 0.104 0.121 933 605 63.9 8480 6050 1.18 9.73 0.113 0.127 1270 903 51.9 7010 5000 1.18 9.82 0.111 0.125 1050 747 39.3 5380 3840 1.18 9.88 0.110 0.123 803 573 61.4 7210 5710 1.12 9.65 0.119 0.129 1080 853 49.9 5970 4730 1.12 9.73 0.117 0.127 892 706 37.8 4580 3630 1.12 9.79 0.116 0.125 684 542

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

74

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 200.28 0.625* 26 x 24 1/2 163.08 0.500* 3/8 123.64 0.375* 5/8 183.27 0.625 24 x 22 1/2 149.47 0.500* 3/8 113.43 5/8 166.25 22 x 20 1/2 135.86 0.500* 3/8 103.22 0.375* 5/8 149.24 0.625 1/2 122.25 0.375* 0.625 Fy = 50 ksi 764 761 760 758 757 755 753 751 750 748 746 744 742 739 737 735 732 730 728 725 723 720 717 715 712 709 706 703 700 697 694 690 687 684 680 677 673 370 666 662 1470 1460 1450 1450 1440 1430 1430 1420 1410 1410 1400 1390 1390 1380 1370 1360 1350 1340 1330 1330 1320 1310 1300 1290 1280 1270 1260 1250 1240 1220 1210 1200 1190 1180 1170 1150 1140 1130 1120 1110

Fy=50

y

x

x

y

SAW

20 x 18 3/8 93.01 0.375*

0.500*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1730 1720 1710 1710 1700 1700 1690 1690 1680 1680 1670 1670 1660 1660 1650 1640 1640 1630 1620 1620 1610 1600 1590 1590 1580 1570 1560 1550 1550 1540 1530 1520 1510 1500 1490 1480 1470 1450 1440 1430

1240 1240 1230 1230 1230 1230 1220 1220 1220 1210 1210 1210 1200 1200 1200 1190 1190 1190 1180 1180 1170 1170 1170 1160 1160 1150 1150 1140 1140 1130 1130 1120 1120 1110 1110 1100 1100 1090 1080 1080

792 790 788 787 785 784 782 781 779 777 775 774 772 770 768 766 764 762 759 757 755 753 750 748 746 743 740 738 735 733 730 727 724 721 718 715 712 709 706 703

1620 1610 1600 1600 1590 1580 1580 1570 1570 1560 1550 1540 1540 1530 1520 1510 1510 1500 1490 1480 1470 1460 1450 1440 1430 1420 1410 1400 1390 1380 1370 1360 1350 1340 1330 1320 1310 1290 1280 1270

1190 1190 1190 1180 1180 1180 1170 1170 1170 1160 1160 1160 1150 1150 1150 1140 1140 1130 1130 1120 1120 1110 1110 1100 1100 1090 1090 1080 1080 1070 1070 1060 1050 1050 1040 1030 1030 1020 1010 1010

1140 1140 1130 1130 1130 1130 1120 1120 1110 1110 1100 1100 1090 1090 1080 1080 1070 1070 1060 1060 1050 1040 1040 1030 1020 1020 1010 1000 996 989 981 974 966 958 950 941 933 924 916 906

734 731 729 728 726 724 722 720 718 716 713 711 709 706 704 701 698 696 693 690 687 684 681 677 674 671 667 664 660 657 653 649 645 641 637 633 629 624 620 616

1320 1310 1300 1300 1290 1280 1280 1270 1260 1260 1250 1240 1230 1220 1220 1210 1200 1190 1180 1170 1160 1150 1140 1130 1120 1110 1100 1090 1080 1060 1050 1040 1030 1020 1000 991 978 965 952 938

1070 1060 1060 1050 1050 1040 1040 1030 1030 1020 1020 1010 1010 1000 996 989 982 975 967 959 952 944 935 927 919 910 901 892 883 874 864 855 845 835 825 815 805 794 784 773

702 698 696 695 692 690 688 683 683 681 678 675 673 670 667 664 660 657 654 650 647 643 640 636 632 628 624 620 615 611 606 602 597 592 587 582 577 572 566 561

PROPERTIES

Area, In.2 Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6 58.9 6060 5370 1.06 9.55 0.126 0.132 905 802 47.9 5020 4450 1.06 9.64 0.124 0.129 750 665 36.3 3860 3420 1.06 9.70 0.122 0.127 576 511 53.9 4680 4110 1.07 8.73 0.138 0.144 699 614 43.9 3900 3420 1.07 8.82 0.135 0.141 582 511 33.3 3000 2630 1.07 8.89 0.133 0.139 448 393 48.9 3530 3060 1.07 7.91 0.152 0.160 527 457 39.9 2950 2560 1.07 8.00 0.149 0.156 441 382 30.3 2280 1970 1.08 8.07 0.146 0.154 340 294 43.9 2590 2210 1.08 7.10 0.169 0.179 387 330 35.9 2180 1850 1.09 7.19 0.165 0.175 326 276 27.3 1690 1440 1.08 7.25 0.162 0.171 252 215

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

75

HSS / Rectangular Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Size Wall Thickness Weight Per Foot Design Wall Thickness 5/8 140.73 0.625 20 x 16 1/2 115.45 0.500* 3/8 87.91 0.375* 20 x 12 5/8 123.72 0.625 5/8 115.21 18 x 12 1/2 95.03 3/8 72.59 0.375* 16 x 12 5/8 106.71 0.625 1/2 81.42 0.500 0.625 0.500 Fy = 50 ksi 1020 1010 999 992 984 977 968 960 950 941 931 921 910 899 888 876 864 852 839 826 813 799 785 771 756 741 726 711 695 679 662 646 629 611 594 576 557 539 520 500 837 828 822 817 811 804 798 791 783 776 768 759 751 742 733 724 714 704 694 683 673 662 651 639 627 615 603 591 578 565 552 539 525 511 497 482 468 453 438 422

Fy=50

y

x

x

y

SAW

14 x 12 3/8 62.39 0.375

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

1240 1230 1230 1220 1210 1210 1200 1190 1180 1180 1170 1160 1150 1140 1130 1120 1110 1100 1090 1080 1070 1060 1050 1040 1030 1010 1000 990 978 965 952 939 925 911 898 883 869 855 840 825

1010 999 995 991 986 982 977 972 967 962 956 951 944 937 929 922 914 906 897 889 880 872 863 853 844 834 825 815 805 794 784 773 763 752 740 729 718 706 694 682

683 679 677 675 673 670 668 665 662 659 656 653 650 647 643 639 636 632 628 623 619 614 609 604 599 593 588 582 577 571 565 559 553 546 540 533 527 520 513 505

1090 1080 1070 1070 1060 1050 1040 1030 1020 1010 1000 990 979 967 956 943 931 918 904 890 876 862 847 832 817 801 785 769 752 735 718 700 682 664 646 627 607 588 568 547

589 584 581 578 575 571 568 564 560 556 551 546 542 537 532 526 521 515 509 503 497 490 484 477 470 462 455 447 439 431 423 414 405 395 384 373 362 351 340 328

942 931 925 918 911 904 896 888 879 870 861 851 841 830 820 809 797 785 773 761 748 735 722 709 695 681 666 651 636 621 605 590 573 557 540 523 505 488 469 451

717 709 704 699 694 688 682 676 669 662 655 648 640 632 624 615 607 598 589 579 570 560 550 539 529 518 507 496 484 473 461 449 436 424 411 398 385 371 357 343

549 543 539 535 531 527 523 518 513 508 502 497 491 485 479 473 466 460 453 446 438 431 423 416 408 400 392 383 375 366 357 348 339 329 320 310 300 290 280 269

PROPERTIES

Area, In. Ix, In. 4 Iy, In. 4 Ratio rx / ry ry, In. Bx, Bending Factor By, Bending Factor ax, ÷ 10 6 ay, ÷ 10 6

2

41.4 2360 1680 1.19 6.37 0.175 0.197 352 251

33.9 1990 1410 1.19 6.46 0.170 0.192 297 211

25.8 1540 1100 1.18 6.52 0.168 0.188 230 164

36.4 1890 864 1.48 4.87 0.193 0.253 282 129

33.9 1450 783 1.36 4.81 0.210 0.260 217 117

27.9 1240 668 1.36 4.89 0.202 0.251 185 99.8

21.3 971 524 1.36 4.95 0.197 0.244 145 78.2

31.4 1090 702 1.25 4.73 0.230 0.268 163 105

23.9 678 536 1.12 4.73 0.247 0.268 101 80.0

18.3 534 422 1.12 4.80 0.240 0.260 79.7 63.0

*Slender element section. Width-Thickness and/or Depth-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 253 / Fy.

76

HSS / Structural Steel Tubing

NOTES

77

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 20.000 0.500 104.13 0.456 0.375 78.60 0.349 0.500 93.45 0.465 18.000 0.375 70.59 0.349 0.500 82.77 0.465 16.000 0.438 72.80 0.407 Fy = 42 ksi 501 497 494 492 489 486 483 480 477 473 470 466 462 458 454 450 446 441 437 432 427 422 417 412 407 402 397 391 386 380 374 369 363 357 350 344 338 331 325 318 0.375 62.58 0.349 0.312 52.28 0.291 0.500 72.09 0.465 14.000 54.57

Fy=42

ERW

0.375

0.312 45.61 0.291

0.349

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

718 713 710 707 704 701 698 695 691 687 684 680 676 672 667 663 659 654 649 645 640 635 630 624 619 614 608 603 597 591 585 579 573 567 561 555 548 542 535 529

542 538 536 534 531 529 527 524 521 519 516 513 510 507 504 500 497 494 490 487 483 479 475 472 468 464 460 455 451 447 442 438 433 429 424 420 415 410 405 400

645 640 637 634 631 628 625 621 617 614 610 606 601 597 593 588 583 579 574 569 564 558 553 548 542 536 531 525 519 513 507 500 494 487 481 474 467 460 453 446

489 485 483 481 478 476 473 471 468 465 462 459 456 453 449 446 443 439 435 432 428 424 420 416 411 407 403 398 394 389 385 380 375 370 365 360 355 350 345 340

572 567 564 561 558 554 551 547 544 540 535 531 527 522 518 513 508 503 498 492 487 481 476 470 464 458 452 446 439 433 426 420 413 406 399 392 384 377 370 362

433 430 427 425 423 420 418 415 412 409 406 403 399 396 393 389 385 382 378 374 370 365 361 357 352 348 343 339 334 329 324 319 314 309 304 298 293 287 282 276

363 360 358 356 354 352 350 347 345 343 340 337 335 332 329 326 323 320 316 313 310 306 303 299 295 292 288 284 280 276 272 268 263 259 255 250 246 241 236 232

499 494 491 488 484 481 477 473 470 465 461 457 452 447 442 437 432 427 421 415 410 404 398 391 385 379 372 365 359 352 345 337 330 323 315 307 299 291 283 275

378 374 372 370 367 365 362 359 356 353 350 346 343 339 335 332 328 324 320 315 311 307 302 297 293 288 283 278 273 268 262 257 252 246 240 235 229 223 217 210

315 312 310 308 306 304 302 299 297 294 291 289 286 283 280 277 273 270 267 263 260 256 252 248 244 240 236 232 228 224 219 215 210 206 201 196 191 186 181 176

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

28.5 1360 6.91 0.210 203

21.5 1040 6.95 0.207 155

25.6 985 6.20 0.234 147

19.4 754 6.24 0.232 113

22.7 685 5.49 0.265 102

19.9 606 5.51 0.263 90.5

17.2 526 5.53 0.262 78.5

14.4 443 5.55 0.260 66.2

19.8 453 4.79 0.306 67.6

15.0 349 4.83 0.301 52.1

12.5 295 4.85 0.297 44.1

78

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 65.42 0.465 12.750 0.375 49.56 0.349 0.250 33.38 0.233 0.625 79.27 0.581 0.500 64.08 0.465 Fy = 42 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 451 446 443 440 436 433 429 425 421 417 412 408 403 398 393 387 382 376 371 365 359 353 346 340 333 326 320 313 305 298 291 283 275 268 260 251 243 235 226 217 343 339 337 334 332 329 326 323 320 317 314 310 307 303 299 295 291 287 282 278 273 269 264 259 254 249 244 239 234 228 222 217 211 205 199 193 187 180 174 167 231 228 227 225 223 222 220 218 216 214 211 209 207 204 202 199 196 194 191 188 185 182 179 175 172 169 165 162 158 155 151 147 143 139 135 131 127 123 119 114 549 543 539 535 531 526 522 517 511 506 500 494 488 482 475 469 462 455 447 440 432 424 416 408 400 391 382 373 364 355 345 336 326 316 305 295 284 273 262 251 444 438 435 432 429 425 421 417 413 409 404 400 395 390 385 379 374 368 362 356 350 344 337 331 324 317 310 303 296 289 281 273 265 257 249 241 232 224 215 206 335 331 329 327 324 321 319 316 313 309 306 302 299 295 291 287 283 279 274 270 265 261 256 251 246 241 236 231 225 220 214 208 202 196 190 184 178 171 165 158 282 279 277 275 273 271 268 266 263 261 258 255 252 249 245 242 239 235 231 228 224 220 216 212 208 204 199 195 190 186 181 176 171 166 161 156 151 145 140 134 226 224 222 221 219 217 215 213 211 209 207 204 202 200 197 194 192 189 186 183 180 177 174 170 167 164 160 157 153 149 146 142 138 134 130 126 122 117 113 109 0.375 48.56 0.349 12.500 0.312 40.61 0.291 0.250 32.71 0.233

Fy=42

ERW

0.188 24.72 0.174

170 168 167 166 164 163 162 160 159 157 155 154 152 150 148 146 144 142 140 137 135 133 131 128 126 123 121 118 115 112 110 107 104 101 98 95 92 89 85 82

PROPERTIES

Area, In. I, In. r, In. B, Bending Factor a ÷ 10

6 4 2

17.9 339 4.35 0.337 50.6

13.6 262 4.39 0.331 39.1

9.16 180 4.43 0.324 26.9

21.8 387 4.22 0.352 57.8

17.6 319 4.26 0.345 47.6

13.3 246 4.30 0.338 36.7

11.2 208 4.32 0.337 31.1

8.98 169 4.34 0.332 25.2

6.74 128 4.36 0.329 19.1

79

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 78.02 0.581 0.500 63.08 0.465 12.313 0.375 47.81 0.349 0.312 39.99 0.291 0.250 32.21 0.233 0.188 24.35 0.174 0.625 77.60 0.581 0.500 62.75 0.465 0.375 47.56 0.349 12.250 0.312 39.78 0.291 32.04 Fy = 42 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 539 533 529 525 521 516 511 506 501 496 490 484 478 472 465 458 451 444 437 429 421 414 405 397 389 380 371 362 353 344 334 324 314 304 294 283 272 261 250 239 436 431 428 425 421 418 414 410 406 401 397 392 387 382 377 371 366 360 354 348 342 336 329 323 316 309 302 295 287 280 272 265 257 248 240 232 223 215 206 197 330 326 324 322 319 316 313 310 307 304 301 297 293 290 286 282 278 273 269 264 260 255 250 245 240 235 230 225 219 214 208 202 196 190 184 178 171 165 158 151 277 274 272 270 268 266 263 261 258 255 253 250 247 243 240 237 233 230 226 222 219 215 211 207 202 198 194 189 185 180 175 170 166 160 155 150 145 139 134 128 223 220 219 217 215 214 212 210 208 205 203 201 198 196 193 191 188 185 182 179 176 173 170 166 163 160 156 153 149 145 141 138 134 130 126 121 117 113 108 104 167 165 164 163 162 160 159 158 156 154 153 151 149 147 145 143 141 139 137 135 132 130 128 125 123 120 118 115 112 109 107 104 101 98 95 92 89 85 82 79 537 530 526 522 518 514 509 504 499 493 487 481 475 469 462 456 449 441 434 426 419 411 403 394 386 377 368 359 350 341 331 321 311 301 291 280 269 258 247 235 433 428 425 422 419 415 411 407 403 399 394 389 384 379 374 369 363 357 352 346 339 333 327 320 313 306 299 292 285 277 270 262 254 246 237 229 220 212 203 194 328 324 321 319 317 314 311 308 305 302 298 295 291 287 283 279 275 271 267 262 257 253 248 243 238 233 228 222 217 211 205 200 194 188 182 175 169 162 156 149 275 271 270 268 265 263 261 258 256 253 250 247 244 241 238 234 231 227 224 220 216 212 208 204 200 196 191 187 182 178 173 168 163 158 153 148 143 137 132 126 222 219 218 216 214 213 211 209 207 204 202 200 197 195 192 189 187 184 181 178 175 172 169 165 162 158 155 151 148 144 140 136 132 128 124 120 116 112 107 103

Fy=42

ERW

0.250

0.188 24.22 0.174

0.233

166 164 163 162 161 159 158 157 155 153 152 150 148 146 144 142 140 138 136 134 131 129 127 124 122 119 117 114 111 108 106 103 100 97 94 91 87 84 81 78

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

21.4 369 4.15 0.357 55.1

17.3 304 4.19 0.350 45.4

13.1 235 4.23 0.343 35.1

11.0 199 4.25 0.340 29.7

8.84 161 4.27 0.338 24.0

6.64 122 4.29 0.335 18.2

21.3 363 4.13 0.359 54.2

17.2 299 4.17 0.352 44.7

13.0 231 4.21 0.345 34.5

10.9 196 4.23 0.341 29.3

8.80 159 4.25 0.339 23.7

6.60 120 4.27 0.337 17.9

80

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 70.92 0.581 0.500 57.41 0.465 0.375 43.56 0.349 11.250 0.312 36.45 0.291 0.250 29.37 0.233 Fy = 42 ksi 203 200 199 197 196 194 192 190 188 185 183 181 178 175 173 170 167 164 161 158 155 151 148 145 141 138 134 130 126 122 118 114 110 106 102 97 93 88 84 79 0.188 22.21 0.174 0.500 54.74 0.465 10.750 0.365 40.48 0.340

Fy=42

ERW

0.250 28.04 0.233

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

491 485 481 477 472 468 463 458 452 447 441 434 428 421 415 408 400 393 385 377 369 361 352 343 335 325 316 307 297 287 277 266 256 245 234 223 211 200 190 181

398 393 390 387 383 379 375 371 367 362 358 353 348 342 337 331 325 319 313 307 300 294 287 280 273 266 258 251 243 235 227 219 210 202 193 184 175 166 157 149

302 298 296 294 291 288 285 282 279 276 272 268 265 261 256 252 248 243 239 234 229 224 219 214 209 203 198 192 186 180 174 168 162 155 149 142 135 128 122 116

252 249 247 245 243 240 238 235 233 230 227 224 221 217 214 210 207 203 199 196 192 187 183 179 175 170 165 161 156 151 146 141 136 130 125 120 114 108 103 98

152 150 149 148 147 145 144 142 141 139 137 136 134 132 130 128 126 123 121 119 116 114 111 109 106 104 101 98 95 92 89 86 83 80 77 74 70 67 63 60

378 373 370 366 363 359 355 351 346 342 337 332 327 321 316 310 304 298 292 285 279 272 265 258 251 243 236 228 220 212 203 195 186 177 168 159 151 143 136 129

280 276 274 271 269 266 263 260 257 253 250 246 242 238 234 230 226 221 217 212 207 202 197 192 187 182 176 170 165 159 153 146 140 134 127 120 114 108 102 97

194 191 190 188 186 185 183 180 178 176 174 171 168 166 163 160 157 154 151 148 145 141 138 134 131 127 123 119 115 111 107 103 99 94 90 85 81 77 73 69

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10

6 4

19.5 278 3.78 0.395 41.5

15.8 229 3.82 0.388 34.2

12.0 178 3.86 0.379 26.6

10.0 151 3.88 0.373 22.5

8.06 122 3.90 0.373 18.2

6.05 92.9 3.92 0.366 13.9

15.0 199 3.64 0.405 29.7

11.1 151 3.68 0.395 22.5

7.70 106 3.72 0.390 15.8

81

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 62.58 0.581 0.500 50.73 0.465 10.000 0.375 38.55 0.349 0.312 32.28 0.291 0.250 26.03 0.233 0.188 19.70 0.174 Fy = 42 ksi 135 133 132 131 130 128 127 125 123 122 120 118 116 114 112 109 107 105 102 100 97 95 92 89 86 84 81 78 75 71 68 65 61 58 55 52 49 46 44 42 0.500 48.73 0.465 0.375 37.05 0.349 9.625 0.312 31.03 0.291 0.250 25.03 0.233

Fy=42

ERW

0.188 18.95 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

433 427 423 419 414 409 404 399 393 387 381 374 367 360 353 346 338 330 322 313 305 296 287 277 268 258 248 238 227 217 205 194 183 172 162 154 145 138 131 124

350 345 342 338 335 331 327 323 318 313 308 303 298 292 286 281 274 268 262 255 248 241 234 226 219 211 203 195 187 178 169 160 151 142 134 127 120 114 108 103

267 263 261 258 255 253 250 246 243 239 236 232 228 223 219 215 210 205 200 195 190 185 179 174 168 162 156 150 144 138 131 124 117 111 104 99 93 89 84 80

224 220 218 216 214 212 209 206 204 201 198 194 191 187 184 180 176 172 168 164 160 155 151 146 142 137 132 127 121 116 111 105 99 94 88 84 79 75 71 68

180 177 176 174 172 171 168 166 164 162 159 157 154 151 148 145 142 139 136 133 129 126 122 118 115 111 107 103 99 94 90 86 81 76 72 68 64 61 58 55

338 332 329 326 322 318 314 310 305 300 295 290 284 278 272 266 260 254 247 240 233 226 218 211 203 195 187 178 170 161 152 142 134 126 119 113 107 101 96 91

257 253 251 248 245 242 239 236 232 229 225 221 217 213 208 204 199 194 189 184 179 173 168 162 156 150 144 138 131 125 118 111 104 98 93 88 83 79 75 71

215 212 210 208 205 203 200 197 195 192 188 185 182 178 174 171 167 163 159 154 150 146 141 136 131 126 121 116 111 105 100 94 88 83 79 74 70 67 63 60

173 170 169 167 165 163 161 159 157 154 152 149 147 144 141 138 135 131 128 125 121 118 114 110 106 102 98 94 90 86 81 77 72 68 64 61 57 54 52 49

130 128 127 126 124 123 121 120 118 116 114 112 110 108 106 104 102 99 97 94 92 89 86 83 81 78 75 71 68 65 62 58 55 52 49 46 44 41 39 37

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

17.2 191 3.34 0.450 28.5

13.9 159 3.38 0.437 23.7

10.6 123 3.41 0.431 18.4

8.88 105 3.43 0.423 15.7

7.15 85.3 3.45 0.419 12.7

5.37 64.8 3.47 0.414 9.68

13.4 141 3.24 0.457 21.1

10.2 110 3.28 0.446 16.4

8.53 93.0 3.30 0.441 13.9

6.87 75.9 3.32 0.436 11.3

5.17 57.7 3.34 0.431 8.62

82

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 44.06 0.465 0.375 33.54 0.349 8.750 0.312 28.12 0.291 0.250 22.70 0.233 0.188 17.19 0.174 0.500 43.39 0.465 0.375 33.04 0.349 Fy = 42 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 305 299 296 293 289 285 281 276 271 266 261 255 249 243 237 231 224 217 210 203 196 188 180 172 164 155 146 137 128 120 112 105 99 93 88 83 79 75 71 67 232 228 226 223 220 217 214 210 207 203 199 195 191 186 182 177 172 167 161 156 151 145 139 133 127 120 114 107 100 94 88 82 77 73 69 65 62 58 55 53 195 191 189 187 185 182 180 177 174 171 167 164 160 157 153 149 145 140 136 132 127 122 117 112 107 102 97 91 85 80 75 70 66 62 59 55 52 50 47 45 157 154 153 151 149 147 145 143 140 138 135 132 129 126 123 120 117 114 110 107 103 99 95 91 87 83 79 74 70 65 61 57 54 51 48 45 43 41 38 37 118 116 115 114 112 111 109 107 106 104 102 100 98 95 93 91 88 86 83 81 78 75 72 69 66 63 60 56 53 50 46 44 41 39 36 34 33 31 29 28 300 294 291 288 284 280 275 271 266 261 256 250 244 238 232 226 219 212 205 198 190 183 175 166 158 149 141 131 123 115 107 101 95 89 84 80 75 71 68 64 229 224 222 219 217 214 210 207 203 199 195 191 187 182 178 173 168 163 158 152 147 141 135 129 123 116 110 103 96 90 84 79 74 70 66 62 59 56 53 50 198 194 192 190 188 185 182 179 176 173 169 166 162 158 154 150 146 142 137 132 128 123 118 112 107 102 96 90 84 79 74 69 65 61 58 55 52 49 47 44 155 152 150 149 147 145 143 140 138 135 133 130 127 124 121 118 115 111 108 104 100 97 93 89 84 80 76 71 67 62 58 55 52 49 46 43 41 39 37 35 116 114 113 112 110 109 107 106 104 102 100 98 96 94 91 89 86 84 81 79 76 73 70 67 64 61 58 54 51 48 45 42 39 37 35 33 31 30 28 27 201 197 194 192 189 186 182 179 175 171 166 162 157 153 148 143 137 132 126 120 114 108 102 95 88 81 76 70 65 61 57 54 51 48 45 43 40 38 36 34 8.625 0.322 28.55 0.300 0.250 22.36 0.233 0.188 16.94 0.174 0.375 29.04 0.349

Fy=42

ERW

7.625 0.328 25.56 0.305 0.125 10.01 0.166

177 173 171 168 166 163 160 157 154 150 146 143 138 134 130 126 121 116 111 106 101 95 90 84 78 72 67 62 58 54 51 48 45 42 40 38 36 34 32 30

69 68 67 66 65 64 63 62 60 59 58 56 55 53 51 50 48 46 44 43 41 39 36 34 32 30 28 26 24 22 21 20 18 17 16 16 15 14 13 13

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

12.1 104.0 2.93 0.509 15.5

9.21 81.4 2.97 0.495 12.2

7.73 69.3 2.99 0.488 10.3

6.23 56.6 3.01 0.482 8.45

4.69 43.1 3.03 0.476 6.44

11.9 99.5 2.89 0.516 14.9

9.07 77.8 2.93 0.503 11.6

7.85 68.1 2.95 0.497 10.2

6.14 54.1 2.97 0.489 8.08

4.62 41.3 2.99 0.482 6.17

7.98 52.9 2.58 0.575 7.90

7.01 47.1 2.59 0.567 7.03

2.74 19.3 2.66 0.541 2.88

83

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 37.38 0.465 0.375 28.54 0.349 7.500 0.312 23.95 0.291 0.250 19.36 0.233 0.188 14.68 0.174 0.500 34.71 0.465 Fy = 42 ksi 241 235 232 228 224 219 215 210 204 199 193 186 180 173 166 159 152 144 136 127 119 110 101 93 85 79 73 68 63 59 55 52 49 46 44 41 39 37 ==== 0.375 26.53 0.349 0.312 22.29 0.291 7.000 0.250 18.02 0.233 0.188 13.68 0.174

Fy=42

ERW

0.125 9.18 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

260 254 251 247 243 239 234 229 224 218 213 207 200 194 187 180 173 165 158 150 141 133 124 115 106 98 91 84 79 74 69 65 61 57 54 51 48 46 44 41

198 193 191 188 185 182 178 175 171 167 163 158 153 149 144 138 133 127 122 116 110 103 97 90 83 77 71 66 62 58 54 51 48 45 42 40 38 36 34 33

166 163 161 158 156 153 150 147 144 141 137 133 129 125 121 117 112 108 103 98 93 88 82 77 71 66 61 57 53 49 46 43 41 38 36 34 32 31 29 28

134 131 130 128 126 124 121 119 116 114 111 108 105 102 98 95 91 88 84 80 76 72 67 63 58 54 50 46 43 40 38 36 33 32 30 28 27 25 24 23

101 99 97 96 95 93 91 90 88 86 84 81 79 77 74 72 69 66 63 61 58 54 51 48 45 41 38 35 33 31 29 27 26 24 23 21 20 19 18 17

184 179 177 174 171 168 164 160 156 152 148 143 138 133 128 123 117 111 105 99 92 86 79 72 67 62 57 53 50 46 43 41 38 36 34 32 30 29 27 ====

154 151 149 146 144 141 138 135 132 128 125 121 117 113 108 104 99 94 89 84 79 73 67 62 57 53 49 46 42 40 37 35 33 31 29 28 26 25 23 ====

125 122 120 118 116 114 112 109 107 104 101 98 95 91 88 84 81 77 73 69 64 60 55 51 47 43 40 37 35 33 31 29 27 25 24 23 21 20 19 ====

94 92 91 89 88 86 84 82 80 78 76 74 72 69 66 64 61 58 55 52 49 46 42 39 36 33 31 29 27 25 23 22 21 19 18 17 16 16 15 14

63 62 61 60 59 58 57 56 54 53 51 50 48 47 45 43 41 39 38 35 33 31 29 27 25 23 21 20 18 17 16 15 14 13 13 12 11 11 10 10

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

10.3 63.9 2.49 0.604 9.54

7.84 50.2 2.53 0.586 7.50

6.59 42.9 2.55 0.576 6.41

5.32 35.2 2.57 0.567 5.26

4.00 26.9 2.59 0.558 4.02

9.55 51.2 2.32 0.653 7.65

7.29 40.4 2.35 0.632 6.03

6.13 34.6 2.37 0.620 5.17

4.95 28.4 2.39 0.610 4.24

3.73 21.7 2.41 0.602 3.24

2.51 14.9 2.43 0.590 2.23

Note: Double Horizontal Line indicates k l/r limit of 200.

84

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 34.04 0.465 0.375 26.03 0.349 6.875 0.312 21.87 0.291 0.250 17.69 0.233 0.188 13.43 0.174 0.500 32.71 0.465 0.432 28.57 0.403 Fy = 42 ksi 199 194 191 187 184 180 176 171 166 161 156 150 145 139 132 126 119 112 105 97 90 82 75 69 63 59 54 50 47 44 41 39 36 34 32 31 ==== 0.375 25.03 0.349 0.312 21.04 0.291 6.625 0.280 18.97 0.261 0.250 17.02 0.233

Fy=42

ERW

0.188 12.92 0.174

0.125 8.68 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

236 230 227 223 219 214 210 204 199 193 187 181 175 168 161 153 146 138 130 121 112 103 95 87 80 74 69 64 59 56 52 49 46 43 41 39 37 ====

180 176 174 171 168 164 161 157 153 149 144 140 135 130 124 119 113 107 101 95 88 82 75 69 63 59 54 51 47 44 41 39 36 34 32 31 29 27 ====

152 148 146 144 141 138 135 132 129 125 122 118 114 109 105 101 96 91 86 81 75 70 64 59 54 50 46 43 40 38 35 33 31 29 28 26 25 23 ====

122 120 118 116 114 112 109 107 104 101 98 95 92 89 85 82 78 74 70 66 62 57 53 48 45 41 38 36 33 31 29 27 26 24 23 21 20 19 18 ====

92 90 89 87 86 84 83 81 79 77 74 72 70 67 65 62 59 56 53 50 47 44 40 37 34 32 29 27 25 24 22 21 20 18 17 16 16 15 14 ====

227 221 218 214 210 205 200 195 189 184 177 171 164 157 150 143 135 127 118 110 101 92 84 77 71 66 61 57 53 49 46 43 41 38 36 34 ====

173 169 167 164 161 157 153 150 145 141 137 132 127 122 116 111 105 99 93 86 80 73 66 61 56 52 48 45 42 39 37 34 32 30 29 27 26 ====

146 142 140 138 135 132 129 126 123 119 115 111 107 103 98 94 89 84 79 74 68 62 57 52 48 45 41 38 36 33 31 29 28 26 25 23 22 ====

132 128 126 124 122 119 117 114 111 108 104 101 97 93 89 85 81 76 72 67 62 57 52 48 44 41 38 35 33 30 29 27 25 24 22 21 20 ====

118 115 113 111 109 107 105 102 99 97 94 90 87 84 80 76 73 69 64 60 56 51 47 43 40 37 34 32 29 28 26 24 23 21 20 19 18 ====

89 87 86 84 83 81 79 77 75 73 71 68 66 63 61 58 55 52 49 46 43 39 36 33 30 28 26 24 23 21 20 19 17 16 16 15 14 13 ====

60 58 57 57 55 54 53 52 51 49 48 46 44 43 41 39 37 35 33 31 29 27 25 23 21 19 18 17 15 14 14 13 12 11 11 10 9 9 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

9.36 48.3 2.27 0.666 7.21

7.16 38.2 2.31 0.644 5.70

6.02 32.7 2.33 0.633 4.88

4.86 26.8 2.35 0.623 4.00

3.66 20.6 2.37 0.611 3.08

9.00 42.9 2.18 0.695 6.41

7.88 38.3 2.20 0.682 5.72

6.88 34.0 2.22 0.670 5.08

5.79 29.1 2.24 0.659 4.35

5.22 26.5 2.25 0.653 3.96

4.68 23.9 2.26 0.649 3.57

3.53 18.4 2.28 0.635 2.75

2.37 12.6 2.30 0.623 1.88

Note: Double Horizontal Line indicates k l/r limit of 200.

85

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 30.04 0.465 0.375 23.03 0.349 6.125 0.312 19.37 0.291 0.250 15.69 0.233 0.188 11.92 0.174 0.500 29.37 0.375 22.53 0.312 18.95 0.291 6.000 0.280 17.11 0.261 0.250 15.35 0.233 11.67 0.465 0.349 Fy = 42 ksi 204 198 195 191 186 181 176 171 165 159 152 146 139 131 123 115 107 98 89 81 73 67 61 56 52 48 44 41 38 36 34 31 ==== 156 152 149 146 143 139 136 132 127 123 118 113 108 102 96 90 84 78 71 64 58 53 49 45 41 38 35 33 31 29 27 25 24 ====

Fy=42

ERW

0.188

0.125 7.84 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

208 203 199 195 191 186 181 176 170 164 158 151 144 137 129 121 113 105 96 87 79 72 65 60 55 51 48 44 41 38 36 34 32 ====

160 155 153 150 146 143 139 135 131 126 122 117 112 106 101 95 89 82 76 69 63 57 52 48 44 41 38 35 33 31 29 27 25 24 ====

134 131 129 126 123 121 117 114 111 107 103 99 95 90 85 81 76 70 65 59 54 49 45 41 38 35 32 30 28 26 25 23 22 20 ====

109 106 104 102 100 98 95 92 90 87 83 80 77 73 69 65 61 57 53 48 44 40 37 34 31 29 27 25 23 21 20 19 18 17 ====

82 80 78 77 75 74 72 70 68 65 63 61 58 55 53 50 47 44 40 37 34 31 28 26 24 22 20 19 18 17 15 15 14 13 12 ====

132 128 126 123 121 118 114 111 107 104 100 96 91 87 82 77 72 66 61 55 50 46 42 38 35 33 30 28 26 25 23 22 20 ====

119 115 113 111 109 106 103 100 97 94 90 86 83 78 74 70 65 60 55 50 46 42 38 35 32 30 28 26 24 22 21 20 18 ====

106 103 102 100 98 95 93 90 87 84 81 78 74 71 67 63 59 55 50 46 41 38 34 32 29 27 25 23 22 20 19 18 17 16 ====

80 78 77 75 74 72 70 68 66 64 61 59 56 54 51 48 45 42 38 35 32 29 26 24 22 21 19 18 17 16 15 14 13 12 ====

54 53 52 51 50 48 47 46 44 43 41 40 38 36 34 32 30 28 26 24 22 20 18 17 15 14 13 12 11 11 10 9 9 8 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

8.27 33.3 2.01 0.761 4.97

6.33 26.5 2.05 0.732 3.96

5.33 22.7 2.07 0.719 3.39

4.31 18.7 2.08 0.706 2.79

3.25 14.4 2.10 0.691 2.15

8.09 31.2 1.96 0.778 4.66

6.20 24.8 2.00 0.750 3.70

5.22 21.3 2.02 0.735 3.18

4.71 19.4 2.03 0.728 2.90

4.22 17.6 2.04 0.719 2.63

3.18 13.5 2.06 0.707 2.02

2.14 9.28 2.08 0.692 1.39

Note: Double Horizontal Line indicates k l/r limit of 200.

86

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.375 20.78 0.349 0.258 14.62 0.241 5.563 0.188 10.79 0.174 0.134 7.77 0.125 Fy = 42 ksi 54 52 51 50 49 48 46 45 43 42 40 38 36 34 32 30 28 25 23 20 19 17 15 14 13 12 11 10 10 9 9 8 ==== 0.500 26.70 0.465 5.500 0.375 20.53 0.349

Fy=42

ERW

0.258 14.44 0.241

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

144 140 137 134 131 127 123 119 114 110 105 99 94 88 82 76 69 63 56 51 46 42 38 35 32 30 28 26 24 23 ====

102 99 97 95 92 90 87 84 81 78 74 71 67 63 59 55 50 46 41 37 33 31 28 26 24 22 20 19 18 16 15 ====

74 72 71 69 68 66 64 62 60 57 55 52 50 47 44 41 38 34 31 28 25 23 21 19 18 17 15 14 13 12 12 ====

185 180 176 172 167 162 157 151 145 139 132 125 118 110 102 93 84 75 68 61 55 51 46 42 39 36 34 31 29 ====

142 138 135 132 129 125 121 117 112 108 103 97 92 86 80 74 67 61 54 49 44 41 37 34 31 29 27 25 23 22 ====

100 97 95 93 91 88 86 83 80 76 73 69 66 62 58 53 49 44 40 36 32 30 27 25 23 21 20 18 17 16 15 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

5.72 19.5 1.85 0.816 2.91

4.03 14.3 1.88 0.784 2.14

2.95 10.7 1.91 0.767 1.60

2.14 7.90 1.92 0.753 1.18

7.36 23.5 1.79 0.861 3.51

5.65 18.8 1.83 0.826 2.81

3.98 13.8 1.86 0.793 2.06

Note: Double Horizontal Line indicates k l/r limit of 200.

87

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 24.03 0.465 0.375 18.52 0.349 0.312 15.62 0.291 5.000 0.258 13.07 0.241 0.250 12.68 0.233 0.188 9.66 0.174 Fy = 42 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 167 161 157 153 148 143 137 131 125 118 111 104 96 87 79 70 62 55 49 44 40 37 34 31 28 26 ==== 129 124 121 118 115 111 107 102 97 92 87 81 76 69 63 56 50 44 40 36 33 30 27 25 23 21 20 ==== 108 105 102 100 97 94 90 86 83 78 74 69 65 59 54 49 43 38 34 31 28 26 24 22 20 18 17 ==== 91 88 86 83 81 78 76 73 69 66 62 58 54 50 46 41 36 33 29 26 24 22 20 18 17 16 14 13 ==== 88 85 83 81 79 76 73 70 67 64 61 57 53 49 45 40 36 32 29 26 23 21 20 18 17 15 14 13 ==== 67 64 63 61 60 58 56 53 51 49 46 43 41 38 34 31 28 25 22 20 18 17 15 14 13 12 11 10 ==== 45 43 42 41 40 39 38 36 35 33 31 30 28 26 24 21 19 17 15 14 13 11 10 10 9 8 8 7 ==== 104 100 98 95 91 88 84 79 75 70 65 60 54 48 42 37 33 29 26 24 21 19 18 16 ==== 75 72 70 68 66 63 60 57 54 51 47 44 40 36 31 27 24 22 19 18 16 15 13 12 11 ==== 59 57 56 54 52 50 48 46 43 41 38 35 32 29 25 22 20 18 16 14 13 12 11 10 9 ==== 0.125 6.51 0.116 0.337 14.98 0.315 0.237 10.79 0.221 4.500 0.188 8.66 0.174

Fy=42

ERW

0.125 5.84 0.116

40 39 38 37 36 34 33 31 30 28 26 24 22 20 18 16 14 12 11 10 9 8 8 7 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

6.62 17.2 1.61 0.962 2.57

5.10 13.9 1.65 0.917 2.08

4.30 12.0 1.67 0.896 1.79

3.60 10.2 1.68 0.882 1.52

3.49 9.94 1.69 0.878 1.48

2.64 7.69 1.71 0.858 1.15

1.78 5.31 1.73 0.838 0.793

4.14 9.12 1.48 1.02 1.36

2.97 6.82 1.51 0.98 1.02

2.36 5.54 1.53 0.958 0.827

1.60 3.84 1.55 0.938 0.573

Note: Double Horizontal Line indicates k l/r limit of 200.

88

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.337 13.18 0.315 0.313 12.33 0.291 0.250 10.01 0.233 0.237 9.52 0.221 Fy = 42 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 92 88 85 82 78 74 70 66 61 56 50 45 38 33 29 25 22 20 18 16 15 ==== 85 82 79 76 73 69 65 61 57 52 47 42 36 31 27 24 21 19 17 15 14 13 ==== 70 66 64 62 59 57 53 50 47 43 39 35 30 26 23 20 18 16 14 13 11 10 ==== 66 63 61 59 57 54 51 48 44 41 37 33 29 25 22 19 17 15 14 12 11 10 ==== 63 60 59 56 54 52 49 46 43 39 36 32 28 24 21 18 16 14 13 12 11 10 ==== 61 59 57 55 53 50 47 45 41 38 35 31 27 23 20 18 16 14 13 11 10 9 ==== 53 50 49 47 45 43 41 38 36 33 30 27 23 20 18 15 14 12 11 10 9 8 ==== 4.000 0.226 9.11 0.211 0.220 8.88 0.205 0.188 7.65 0.174

Fy=42

ERW

0.125 5.17 0.116

36 34 33 32 31 29 28 26 24 23 21 19 16 14 12 11 10 9 8 7 6 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

3.65 6.24 1.31 1.17 0.932

3.39 5.87 1.32 1.16 0.877

2.76 4.91 1.33 1.12 0.733

2.62 4.70 1.34 1.11 0.702

2.51 4.52 1.34 1.11 0.675

2.44 4.41 1.34 1.11 0.659

2.09 3.83 1.35 1.09 0.572

1.42 2.67 1.37 1.06 0.339

Note: Double Horizontal Line indicates k l/r limit of 200.

89

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.313 10.65 0.291 0.300 10.25 0.280 0.250 8.68 0.233 3.500 0.216 7.58 0.201 Fy = 42 ksi 52 50 48 46 43 41 38 35 32 28 24 21 17 15 13 12 10 9 8 ==== 0.203 7.15 0.189 0.188 6.65 0.174

Fy=42

ERW

0.125 4.51 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

74 70 67 64 61 57 53 48 43 38 33 27 23 20 18 15 14 12 11 ====

71 67 65 62 59 55 51 47 42 37 32 26 23 19 17 15 13 12 11 ====

60 57 55 52 50 47 43 40 36 32 27 23 20 17 15 13 12 10 9 ====

50 47 45 43 41 39 36 33 30 27 23 19 17 14 12 11 10 9 8 ====

46 43 42 40 38 36 33 31 28 25 22 18 16 13 12 10 9 8 7 ====

31 29 28 27 26 24 23 21 19 17 15 13 11 9 8 7 6 6 5 5 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

2.93 3.81 1.14 1.35 0.569

2.83 3.70 1.14 1.34 0.553

2.39 3.21 1.16 1.30 0.479

2.08 2.84 1.17 1.28 0.424

1.97 2.70 1.17 1.28 0.403

1.82 2.52 1.18 1.26 0.376

1.23 1.77 1.20 1.22 0.264

Note: Double Horizontal Line indicates k l/r limit of 200.

90

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.300 8.65 0.280 0.250 7.34 0.233 0.216 6.42 0.201 3.000 0.203 6.06 0.189 0.188 5.65 0.174 0.152 4.62 0.134 4.10 0.120 3.69 0.112 0.250 7.01 0.233 2.875 0.203 5.79 0.189 5.40 0.142 0.125 Fy = 42 ksi 32 30 29 27 25 23 21 19 16 13 11 9 8 7 6 5 ==== 28 27 25 24 23 21 19 17 15 12 10 8 7 6 5 5 4 ====

Fy=42

ERW

0.188

0.125 3.67 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

60 56 53 50 47 43 38 34 28 23 19 16 14 12 10 9 ====

51 48 46 43 40 37 33 29 25 20 17 14 12 10 9 8 ====

45 42 40 37 35 32 29 26 22 18 15 13 11 9 8 7 ====

42 39 38 35 33 30 27 24 21 17 14 12 10 9 8 7 ====

39 36 35 33 30 28 25 22 19 16 13 11 9 8 7 6 ====

26 24 23 22 20 19 17 15 13 11 9 8 7 6 5 4 4 ====

49 45 43 40 37 34 30 26 22 18 15 12 10 9 8 ====

40 37 35 33 31 28 25 22 18 15 12 10 9 8 7 ====

37 35 33 31 29 26 24 21 17 14 12 10 8 7 6 ====

25 24 23 21 20 18 16 14 12 10 8 7 6 5 4 4 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

2.39 2.24 0.967 1.60 0.335

2.03 1.95 0.982 1.56 0.291

1.77 1.74 0.992 1.53 0.260

1.67 1.66 0.996 1.51 0.248

1.54 1.55 1.00 1.49 0.231

1.27 1.30 1.01 1.47 0.194

1.13 1.17 1.02 1.45 0.175

1.02 1.06 1.02 1.44 0.158

1.93 1.70 0.938 1.63 0.254

1.59 1.45 0.952 1.58 0.217

1.48 1.35 0.957 1.58 0.202

1.01 0.958 0.976 1.52 0.143

Note: Double Horizontal Line indicates k l/r limit of 200.

91

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.250 6.01 0.233 2.500 0.188 4.64 0.174 0.125 3.17 0.116 0.250 5.67 0.233 0.218 5.02 2.375 0.188 4.39 0.154 3.65 0.143 0.125 3.00 0.116 1.900 0.145 2.72 0.135 0.204 0.174 Fy = 42 ksi 35 32 30 27 24 21 17 13 11 9 7 6 ==== 30 28 26 24 21 18 15 12 9 8 6 5 4 ====

Fy=42

ERW

1.660 0.140 2.27 0.130

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

42 38 36 33 30 26 22 17 14 11 9 8 7 ====

32 29 28 25 23 20 17 14 11 9 7 6 5 ====

22 20 19 18 16 14 12 10 8 6 5 4 4 3 ====

40 36 33 30 27 23 19 15 12 9 8 7 ====

25 23 21 20 18 15 13 10 8 6 5 5 4 ====

21 19 18 16 15 13 11 9 7 5 4 4 3 ====

19 17 15 13 11 8 6 5 4 3 ====

16 13 12 10 8 5 4 3 2 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

1.66 1.08 0.806 1.92 0.161

1.27 0.865 0.825 1.84 0.129

0.87 0.619 0.844 1.76 0.092

1.57 0.910 0.762 2.05 0.136

1.39 0.827 0.771 2.00 0.123

1.20 0.733 0.781 1.94 0.109

1.00 0.627 0.791 1.89 0.094

0.82 0.527 0.800 1.85 0.079

0.75 0.293 0.626 2.43 0.044

0.62 0.184 0.543 2.80 0.027

Note: Double Horizontal Line indicates k l/r limit of 200.

92

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 20.000 0.500 104.13 0.465 0.375 78.60 0.349 18.000 0.500 93.45 0.465 0.375 70.59 0.349 0.500 82.77 0.465 0.438 72.80 0.407 Fy = 46 ksi 549 544 541 538 535 532 528 524 520 516 512 508 503 499 494 489 484 479 474 468 463 457 451 445 439 433 427 421 414 407 401 394 387 380 373 365 358 350 343 335 16.000 0.375 62.58 0.349 0.312 52.28 0.291 0.500 72.09 0.465 14.000 0.375 54.57 0.349

Fy=46

ERW

0.312 45.61 0.291

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

787 781 778 774 771 767 763 759 755 751 747 742 737 733 728 723 717 712 707 701 695 689 683 677 671 665 659 652 645 639 632 625 618 611 603 596 588 581 573 565

593 589 587 584 582 579 576 573 570 567 563 560 557 553 549 545 542 538 533 529 525 521 516 512 507 502 498 493 488 483 477 472 467 462 456 451 445 439 434 428

707 701 697 694 690 687 683 679 674 670 665 661 656 651 646 640 635 629 624 618 612 606 599 593 586 580 573 566 559 552 545 537 530 522 515 507 499 491 483 474

535 531 529 526 523 521 518 514 511 508 505 501 497 494 490 486 482 477 473 469 464 460 455 450 445 440 435 430 425 419 414 408 403 397 391 385 379 373 367 361

627 621 617 614 610 606 602 598 593 589 584 579 574 569 563 558 552 546 540 534 527 521 514 508 501 494 486 479 472 464 456 448 440 432 424 416 407 398 390 381

475 470 468 465 462 459 456 453 450 446 443 439 435 431 427 423 419 414 410 405 400 395 391 385 380 375 370 364 359 353 347 341 335 329 323 317 310 304 297 290

397 394 392 389 387 385 382 380 377 374 371 368 365 361 358 354 351 347 343 339 335 331 327 323 319 314 310 305 301 296 291 286 281 276 271 266 260 255 250 244

546 540 537 534 530 526 521 517 512 507 502 497 492 486 480 474 468 462 456 449 442 435 428 421 414 406 398 390 382 374 366 358 349 340 331 322 313 303 294 284

414 409 407 404 401 398 395 392 388 385 381 377 373 369 365 360 355 351 346 341 336 331 325 320 314 309 303 297 291 285 279 273 266 260 253 246 239 232 225 218

345 341 339 337 335 332 329 327 324 321 318 314 311 308 304 300 297 293 289 285 280 276 272 267 263 258 253 248 243 238 233 228 222 217 212 206 200 194 188 182

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

28.5 1360 6.91 0.210 203

21.5 1040 6.95 0.207 155

25.6 985 6.20 0.234 147

19.4 754 6.24 0.232 113

22.7 685 5.49 0.265 102

19.9 606 5.51 0.263 90.5

17.2 526 5.53 0.262 78.5

14.4 443 5.55 0.260 66.2

19.8 453 4.79 0.306 67.6

15.0 349 4.83 0.301 52.1

12.5 295 4.85 0.297 44.1

93

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 65.42 0.465 12.750 0.375 49.56 0.349 0.250 33.38 0.233 0.625 79.27 0.581 0.500 64.08 0.465 Fy = 46 ksi 486 480 476 473 469 464 460 455 451 445 440 435 429 423 417 411 404 398 391 384 377 369 362 354 346 338 330 322 313 304 296 286 277 268 258 248 238 228 218 207 0.375 48.56 0.349 12.500 0.312 40.61 0.291 0.250 32.71 0.233

Fy=46

ERW

0.188 24.72 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

494 488 485 481 477 473 469 464 459 454 449 444 438 432 426 420 414 407 400 393 386 379 372 364 356 348 340 332 324 315 306 297 288 279 270 260 250 240 230 219

375 371 368 366 363 359 356 353 349 345 342 337 333 329 324 320 315 310 305 300 295 289 284 278 272 266 260 254 248 241 235 228 221 214 207 200 193 185 177 170

253 250 248 246 244 242 240 238 235 233 230 228 225 222 219 216 213 209 206 203 199 195 192 188 184 180 176 172 168 164 159 155 150 146 141 136 131 126 121 116

602 594 590 585 580 575 569 564 558 551 545 538 531 523 516 508 500 491 483 474 465 456 446 436 427 417 406 396 385 374 363 351 340 328 316 303 291 278 265 252

367 363 360 357 354 351 348 344 341 337 333 329 325 320 316 311 306 301 296 291 286 280 275 269 263 257 251 245 238 232 225 219 212 205 197 190 183 175 167 159

309 305 303 301 298 296 293 290 287 284 281 277 274 270 266 262 258 254 250 246 241 237 232 227 222 217 212 207 201 196 191 185 179 173 167 161 155 149 142 135

248 245 243 241 239 237 235 233 230 228 225 222 220 217 214 211 207 204 201 197 194 190 186 182 179 175 171 166 162 158 153 149 144 140 135 130 125 120 115 110

186 184 182 181 180 178 176 175 173 171 169 167 165 163 161 158 156 153 151 148 146 143 140 137 134 131 128 125 122 119 116 112 109 105 102 98 94 91 87 83

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

17.9 339 4.35 0.337 50.6

13.6 262 4.39 0.331 39.1

9.16 180 4.43 0.324 26.9

21.8 387 4.22 0.352 57.8

17.6 319 4.26 0.345 47.6

13.3 246 4.30 0.338 36.7

11.2 208 4.32 0.337 31.1

8.98 169 4.34 0.332 25.2

6.74 128 4.36 0.329 19.1

*Slender element section. Diameter-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 3300/ Fy

94

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 78.02 0.581 0.500 63.08 0.465 12.313 0.375 47.81 0.349 0.312 39.99 0.291 0.250 32.21 0.233 0.188 24.35 0.625 77.60 0.500 62.75 0.465 12.250 0.375 47.56 0.349 0.312 39.78 0.291 0.250 32.04 0.233 0.174 0.581 Fy = 46 ksi 183 181 180 178 177 175 174 172 170 168 166 164 162 160 158 155 153 150 148 145 143 140 137 134 131 128 125 122 119 116 112 109 105 102 98 95 91 87 83 79 588 580 576 571 566 561 556 550 544 537 530 524 516 509 501 493 485 477 468 459 450 441 431 421 411 401 391 380 369 358 347 335 324 312 299 287 274 261 248 235

Fy=46

ERW

0.188 24.22 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

591 583 579 574 569 564 558 553 546 540 533 526 519 512 504 496 488 480 471 462 453 444 434 425 415 404 394 383 373 362 350 339 327 315 303 290 277 264 251 239

477 471 468 464 460 456 452 447 442 437 432 426 420 415 408 402 396 389 382 375 368 360 353 345 337 329 321 312 304 295 286 277 267 258 248 238 228 218 207 197

362 357 354 352 349 346 342 339 335 331 327 323 319 315 310 305 300 295 290 285 280 274 268 263 257 251 244 238 232 225 218 212 205 198 190 183 175 168 160 152

304 300 298 295 293 290 287 285 282 278 275 272 268 264 261 257 253 248 244 240 235 231 226 221 216 211 206 201 195 190 184 179 173 167 161 155 148 142 135 129

244 241 239 237 235 233 231 229 226 224 221 218 216 213 210 206 203 200 196 193 189 186 182 178 174 170 166 162 158 153 149 144 140 135 130 125 120 115 110 104

475 469 465 462 458 453 449 444 439 434 429 423 418 412 406 399 393 386 379 372 365 358 350 342 334 326 318 309 301 292 283 274 264 255 245 235 225 214 204 194

359 354 352 349 346 343 340 336 332 329 325 321 316 312 307 303 298 293 288 282 277 271 266 260 254 248 242 236 229 223 216 209 202 195 188 180 173 165 157 149

301 297 295 293 290 288 285 282 279 276 272 269 265 262 258 254 250 246 242 237 233 228 223 219 214 209 203 198 193 187 182 176 170 164 158 152 146 139 133 126

243 240 238 236 234 232 230 228 225 223 220 217 214 211 208 205 202 199 195 192 188 184 181 177 173 169 165 161 156 152 147 143 138 133 129 124 119 114 108 103

182 180 179 177 176 174 173 171 169 167 165 163 161 159 156 154 152 149 147 144 141 139 136 133 130 127 124 121 118 114 111 108 104 101 97 93 90 86 82 78

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

21.4 369 4.15 0.357 55.1

17.3 304 4.19 0.350 45.4

13.1 235 4.23 0.343 35.1

11.0 199 4.25 0.340 29.7

8.84 161 4.27 0.338 24.0

6.64 122 4.29 0.335 18.2

21.3 363 4.13 0.359 54.2

17.2 299 4.17 0.352 44.7

13.0 231 4.21 0.345 34.5

10.9 196 4.23 0.341 29.3

8.80 159 4.25 0.339 23.7

6.60 120 4.27 0.337 17.9

95

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 70.92 0.581 0.500 57.41 0.465 0.375 43.56 0.349 11.250 0.312 36.45 0.291 0.250 29.37 0.233 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 538 531 526 521 516 511 505 499 493 486 479 472 464 457 449 440 432 423 414 405 395 386 376 365 355 344 333 322 310 299 287 274 262 249 236 223 211 200 190 181 436 430 426 423 419 414 410 405 400 394 389 383 377 371 365 358 351 344 337 330 322 314 306 298 290 281 272 263 254 245 235 226 216 205 195 184 175 166 157 149 331 327 324 321 318 315 311 308 304 300 296 292 287 282 278 273 268 262 257 251 246 240 234 228 222 215 209 202 195 188 181 174 166 159 151 143 135 128 122 116 276 272 270 268 265 262 260 257 253 250 247 243 239 236 232 228 223 219 215 210 205 201 196 191 185 180 175 169 164 158 152 146 140 133 127 120 114 108 103 98 222 219 218 216 214 212 209 207 204 202 199 196 193 190 187 184 180 177 173 170 166 162 158 154 150 146 141 137 133 128 123 118 113 108 103 98 93 88 84 79 167 165 163 162 160 159 157 155 154 152 150 147 145 143 141 138 136 133 130 128 125 122 119 116 113 110 107 103 100 97 93 89 86 82 78 74 70 67 63 60 414 408 404 401 396 392 387 382 377 372 366 360 354 348 341 335 328 321 313 306 298 290 282 274 265 256 247 238 229 219 209 199 189 178 168 159 151 143 136 129 306 302 299 297 294 290 287 283 280 276 272 267 263 258 254 249 244 238 233 227 222 216 210 204 198 191 185 178 171 164 157 150 142 135 127 120 114 108 102 97 0.188 22.21 0.174 0.500 54.74 0.465 10.750 0.365 40.48 0.340

Fy=46

ERW

0.250 28.04 0.233

213 209 208 206 204 202 199 197 194 192 189 186 183 180 176 173 170 166 162 159 155 151 147 143 138 134 130 125 120 116 111 106 101 95 90 85 81 77 73 69

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

19.5 278 3.78 0.395 41.5

15.8 229 3.82 0.388 34.2

12.0 178 3.86 0.379 26.6

10.0 151 3.88 0.373 22.5

8.06 122 3.90 0.372 18.2

6.05 92.9 3.92 0.366 13.9

15.0 199 3.64 0.405 29.7

11.1 151 3.68 0.395 22.5

7.70 106 3.72 0.390 15.8

96

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 62.58 0.581 0.500 50.73 0.465 0.375 38.55 0.349 10.000 0.312 32.28 0.291 0.250 26.03 0.233 0.188 19.70 0.174 Fy = 46 ksi 148 146 145 143 142 140 138 136 134 132 130 128 125 123 120 118 115 112 110 107 104 101 98 94 91 88 84 81 77 73 69 65 62 58 55 52 49 46 44 42 0.500 48.73 0.465 0.375 37.05 0.349 9.625 0.312 31.03 0.291 0.250 25.03 0.233

Fy=46

ERW

0.188 18.95 0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

`

475 467 462 458 452 447 441 434 428 421 413 406 398 390 381 372 363 354 344 334 324 314 303 292 281 269 258 245 233 220 207 194 183 172 162 154 145 138 131 124

384 377 374 370 366 361 357 352 346 341 335 329 322 316 309 302 295 288 280 272 264 256 247 239 230 221 211 202 192 182 171 161 151 142 134 127 120 114 108 103

293 288 285 282 279 276 272 268 264 260 256 251 246 242 237 231 226 220 215 209 203 196 190 183 177 170 163 156 148 141 133 125 117 111 104 99 93 89 84 80

245 241 239 237 234 231 228 225 222 218 215 211 207 203 199 194 190 185 180 175 170 165 160 154 149 143 137 131 125 119 112 106 99 94 88 84 79 75 71 68

197 194 192 190 188 186 184 181 179 176 173 170 167 163 160 157 153 149 146 142 138 134 129 125 121 116 111 107 102 97 91 86 81 76 72 68 64 61 58 55

370 364 360 356 352 347 342 337 332 326 320 314 307 301 294 287 279 272 264 256 247 239 230 221 212 202 193 183 173 162 152 142 134 126 119 113 107 101 96 91

282 277 274 271 268 265 261 257 253 249 244 240 235 230 225 219 214 208 202 196 190 184 177 170 163 156 149 142 134 126 118 111 104 98 93 88 83 79 75 71

235 232 229 227 224 221 218 215 212 208 205 201 197 193 188 184 179 175 170 165 160 154 149 143 138 132 126 120 113 107 100 94 88 83 79 74 70 67 63 60

190 186 185 183 181 178 176 173 171 168 165 162 159 155 152 148 145 141 137 133 129 125 120 116 112 107 102 97 92 87 82 77 72 68 64 61 57 54 52 49

143 140 139 138 136 134 132 131 129 126 124 122 120 117 115 112 109 106 104 101 97 94 91 88 84 81 77 74 70 66 62 58 55 52 49 46 44 41 39 37

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

17.2 191 3.34 0.450 28.5

13.9 159 3.38 0.437 23.7

10.6 123 3.41 0.431 18.4

8.88 105 3.43 0.423 15.7

7.15 85.3 3.45 0.419 12.7

5.37 64.8 3.47 0.414 9.68

13.4 141 3.24 0.457 21.1

10.2 110 3.28 0.446 16.4

8.53 93.0 3.30 0.441 13.9

6.87 75.9 3.32 0.436 11.3

5.17 57.7 3.34 0.431 8.62

97

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 44.06 0.465 0.375 33.54 0.349 8.750 0.312 28.12 0.291 0.250 22.70 0.233 0.188 17.19 0.174 0.500 43.39 0.465 0.375 33.04 0.349 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 334 328 324 320 315 311 306 300 295 289 282 276 269 262 255 247 240 232 223 215 206 197 188 178 168 158 148 137 128 120 112 105 99 93 88 83 79 75 71 67 254 249 247 244 240 237 233 229 225 220 216 211 206 201 195 190 184 178 172 165 159 152 145 138 131 123 115 107 100 94 88 82 77 73 69 65 62 58 55 53 213 209 207 205 202 199 196 192 189 185 181 177 173 169 164 160 155 150 145 139 134 128 123 117 111 104 98 91 85 80 75 70 66 62 59 55 52 50 47 45 172 169 167 165 163 160 158 155 152 149 146 143 140 136 133 129 125 121 117 113 109 104 100 95 90 85 80 75 70 65 61 57 54 51 48 45 43 41 38 37 129 127 126 124 123 121 119 117 115 113 110 108 105 103 100 97 95 92 89 85 82 79 76 72 68 65 61 57 53 50 46 44 41 39 36 34 33 31 29 28 328 322 318 314 310 305 300 295 289 283 277 270 264 256 249 242 234 226 217 209 200 191 182 172 162 152 141 131 123 115 107 101 95 89 84 80 75 71 68 64 250 246 243 240 236 233 229 225 221 216 212 207 202 197 191 185 180 174 167 161 154 148 141 134 126 119 111 103 96 90 84 79 74 70 66 62 59 56 53 50 217 213 210 208 205 202 198 195 191 188 184 179 175 171 166 161 156 151 146 140 134 129 123 117 110 104 97 90 84 79 74 69 65 61 58 55 52 49 47 44 169 166 164 162 160 158 155 153 150 147 144 141 137 134 130 126 123 119 114 110 106 101 97 92 87 82 77 72 67 62 58 55 52 49 46 43 41 39 37 35 128 125 124 122 121 119 117 115 113 111 108 106 103 101 98 95 93 90 86 83 80 77 73 70 66 62 59 55 51 48 45 42 39 37 35 33 31 30 28 27 220 215 213 209 206 202 198 194 189 185 180 175 169 164 158 152 146 139 132 126 118 111 103 96 88 81 76 70 65 61 57 54 51 48 45 43 40 38 36 34 8.625 0.322 28.55 0.300 0.250 22.36 0.233 0.188 16.94 0.174 0.375 29.04 0.349

Fy=46

ERW

7.625 0.328 25.56 0.305 0.125 10.01 0.166

193 189 187 184 181 178 174 171 167 162 158 154 149 144 139 134 128 123 117 111 105 98 92 85 78 72 67 62 58 54 51 48 45 42 40 38 36 34 32 30

76 74 73 72 71 70 68 67 65 64 62 61 59 57 55 53 51 49 47 45 42 40 37 35 32 30 28 26 24 22 21 20 18 17 16 16 15 14 13 13

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

12.1 104 2.93 0.509 15.5

9.21 81.4 2.97 0.495 12.2

7.73 69.3 2.99 0.488 10.3

6.23 56.6 3.01 0.482 8.45

4.69 43.1 3.03 0.476 6.44

11.9 99.5 2.89 0.516 14.9

9.07 77.8 2.93 0.503 11.6

7.85 68.1 2.95 0.497 10.2

6.14 54.1 2.97 0.489 8.08

4.62 41.3 2.99 0.482 6.17

7.98 52.9 2.58 0.575 7.90

7.01 47.1 2.59 0.567 7.03

2.74 19.3 2.66 0.541 2.88

98

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 37.38 0.465 0.375 28.54 0.349 7.500 0.312 23.95 0.291 0.250 19.36 0.233 0.188 14.68 0.174 0.500 34.71 0.465 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 284 278 274 270 265 260 254 249 243 236 229 222 215 207 200 191 183 174 165 155 146 136 125 115 106 98 91 84 79 74 69 65 61 57 54 51 48 46 44 41 216 212 209 205 202 198 194 190 185 181 176 170 165 159 153 147 141 134 128 121 113 106 98 90 83 77 71 66 62 58 54 51 48 45 42 40 38 36 34 33 182 178 175 173 170 167 163 160 156 152 148 144 139 134 129 124 119 114 108 102 96 90 84 77 71 66 61 57 53 49 46 43 41 38 36 34 32 31 29 28 147 144 142 140 137 135 132 129 126 123 120 116 113 109 105 101 97 92 88 83 79 74 69 63 58 54 50 46 43 40 38 36 33 32 30 28 27 25 24 23 110 108 107 105 103 101 99 97 95 93 90 88 85 82 79 76 73 70 67 63 60 56 52 48 45 41 38 35 33 31 29 27 26 24 23 21 20 19 18 17 264 257 253 249 244 239 233 227 221 214 208 200 193 185 177 168 159 150 141 131 121 110 101 93 85 79 73 68 63 59 55 52 49 46 44 41 39 37 ==== 201 196 193 190 186 183 178 174 169 164 159 154 148 142 136 130 123 116 109 102 94 86 79 72 67 62 57 53 50 46 43 41 38 36 34 32 30 29 27 ==== 169 165 163 160 157 154 150 147 143 139 134 130 125 120 115 110 104 99 93 87 80 74 67 62 57 53 49 46 42 40 37 35 33 31 29 28 26 25 23 ==== 137 133 131 129 127 124 122 119 115 112 109 105 101 98 93 89 85 80 76 71 66 61 55 51 47 43 40 37 35 33 31 29 27 25 24 23 21 20 19 ==== 103 101 99 97 96 94 92 89 87 85 82 80 77 74 71 68 64 61 58 54 50 46 42 39 36 33 31 29 27 25 23 22 21 19 18 17 16 16 15 14 0.375 26.53 0.349 0.312 22.29 0.291 7.000 0.250 18.02 0.233 0.188 13.68 0.174

Fy=46

ERW

0.125 9.18 0.116

69 68 67 66 64 63 62 60 59 57 55 54 52 50 48 46 44 41 39 37 34 32 29 27 25 23 21 20 18 17 16 15 14 13 13 12 11 11 10 10

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

10.3 63.9 2.49 0.604 9.54

7.84 50.2 2.53 0.586 7.50

6.59 42.9 2.55 0.576 6.41

5.32 35.2 2.57 0.567 5.26

4.00 26.9 2.59 0.558 4.02

9.55 51.2 2.32 0.653 7.65

7.29 40.4 2.35 0.632 6.03

6.13 34.6 2.37 0.620 5.17

4.95 28.4 2.39 0.610 4.24

3.73 21.7 2.41 0.602 3.24

2.51 14.9 2.43 0.590 2.23

Note: Double Horizontal Line indicates k l/r limit of 200.

99

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 34.04 0.465 0.375 26.03 0.349 6.875 0.312 21.87 0.291 0.250 17.69 0.233 0.188 13.43 0.174 0.500 32.71 0.465 0.432 28.57 0.403 Fy = 46 ksi 217 212 208 204 200 196 191 185 180 174 168 161 154 147 140 132 124 116 108 99 90 82 75 69 63 59 54 50 47 44 41 39 36 34 32 31 ==== 0.375 25.03 0.349 0.312 21.04 0.291 6.625 0.280 18.97 0.261 0.250 17.02 0.233

Fy=46

ERW

0.188 12.92 0.174

0.125 8.68 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

258 252 248 243 239 233 228 222 215 209 202 194 187 179 170 162 153 143 134 124 113 103 95 87 80 74 69 64 59 56 52 49 46 43 41 39 37 ====

198 193 190 186 183 179 175 170 166 161 155 150 144 138 132 126 119 112 105 97 90 82 75 69 63 59 54 51 47 44 41 39 36 34 32 31 29 27 ====

166 162 160 157 154 151 147 143 140 135 131 126 122 117 112 106 101 95 89 83 77 70 64 59 54 50 46 43 40 38 35 33 31 29 28 26 25 23 ====

134 131 129 127 124 122 119 116 113 110 106 103 99 95 91 86 82 77 73 68 63 58 53 48 45 41 38 36 33 31 29 27 26 24 23 21 20 19 18 ====

101 99 97 95 94 92 90 88 85 83 80 77 75 72 69 66 62 59 55 52 48 44 40 37 34 32 29 27 25 24 22 21 20 18 17 16 16 15 14 ====

248 242 238 233 228 223 217 211 205 198 191 183 175 167 159 150 141 131 121 111 101 92 84 77 71 66 61 57 53 49 46 43 41 38 36 34 ====

190 185 182 179 175 171 167 162 157 152 147 141 136 129 123 117 110 103 95 88 80 73 66 61 56 52 48 45 42 39 37 34 32 30 29 27 26 ====

160 156 153 150 147 144 141 137 133 129 124 119 115 110 104 99 93 87 81 75 68 62 57 52 48 45 41 38 36 33 31 29 28 26 25 23 22 ====

144 140 138 136 133 130 127 123 120 116 112 108 104 99 94 90 84 79 74 68 62 57 52 48 44 41 38 35 33 30 29 27 25 24 22 21 20 ====

129 126 124 122 119 117 114 111 108 104 101 97 93 89 85 81 76 71 67 61 56 51 47 43 40 37 34 32 29 28 26 24 23 21 20 19 18 ====

97 95 93 92 90 88 86 84 81 79 76 73 71 68 64 61 58 54 51 47 43 39 36 33 30 28 26 24 23 21 20 19 17 16 16 15 14 13 ====

65 64 63 62 60 59 58 56 55 53 51 50 48 46 44 41 39 37 35 32 29 27 25 23 21 19 18 17 15 14 14 13 12 11 11 10 9 9 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

9.36 48.3 2.27 0.666 7.21

7.16 38.2 2.31 0.644 5.70

6.02 32.7 2.33 0.633 4.88

4.86 26.8 2.35 0.623 4.00

3.66 20.6 2.37 0.611 3.08

9.00 42.9 2.18 0.695 6.41

7.88 38.3 2.20 0.682 5.72

6.88 34.0 2.22 0.670 5.08

5.79 29.1 2.24 0.659 4.35

5.22 26.5 2.25 0.653 3.96

4.68 23.9 2.26 0.649 3.57

3.53 18.4 2.28 0.635 2.75

2.37 12.6 2.30 0.623 1.88

Note: Double Horizontal Line indicates k l/r limit of 200.

100

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 30.04 0.465 0.375 23.03 0.349 6.125 0.312 19.37 0.291 0.250 15.69 0.233 0.188 11.92 0.174 0.500 29.37 0.375 22.53 0.312 18.95 0.291 6.000 0.280 17.11 0.261 0.250 15.35 0.233 11.67 0.465 0.349 Fy = 46 ksi 223 217 212 208 203 197 191 185 178 171 163 155 147 138 129 120 110 99 89 81 73 67 61 56 52 48 44 41 38 36 34 31 ==== 171 166 163 160 156 152 147 142 137 132 126 120 114 108 101 94 87 79 71 64 58 53 49 45 41 38 35 33 31 29 27 25 24 ====

Fy=46

ERW

0.188

0.125 7.84 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

228 222 218 213 208 202 196 190 183 176 169 161 153 144 135 126 117 106 96 87 79 72 65 60 55 51 48 44 41 38 36 34 32 ====

175 170 167 163 159 155 151 146 141 136 131 125 119 112 106 99 92 84 76 69 63 57 52 48 44 41 38 35 33 31 29 27 25 24 ====

147 143 140 138 134 131 127 124 119 115 110 106 101 95 90 84 78 72 66 59 54 49 45 41 38 35 32 30 28 26 25 23 22 20 ====

119 116 114 111 109 106 103 100 97 93 89 86 82 77 73 68 64 59 54 48 44 40 37 34 31 29 27 25 23 21 20 19 18 17 ====

90 87 86 84 82 80 78 76 73 71 68 65 62 59 56 52 49 45 41 37 34 31 28 26 24 22 20 19 18 17 15 15 14 13 12 ====

144 140 137 134 131 128 124 120 116 112 107 102 97 92 86 80 74 68 61 55 50 46 42 38 35 33 30 28 26 25 23 22 20 ====

130 126 124 121 119 115 112 109 105 101 97 92 88 83 78 73 67 62 56 50 46 42 38 35 32 30 28 26 24 22 21 20 18 ====

116 113 111 109 106 104 101 97 94 91 87 83 79 75 70 66 61 56 50 46 41 38 34 32 29 27 25 23 22 20 19 18 17 16 ====

88 85 84 82 80 78 76 74 71 68 66 63 60 57 53 50 46 43 39 35 32 29 26 24 22 21 19 18 17 16 15 14 13 12 ====

59 57 56 55 54 53 51 50 48 46 44 43 41 38 36 34 32 29 27 24 22 20 18 17 15 14 13 12 11 11 10 9 9 8 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

8.27 33.3 2.01 0.761 4.97

6.33 26.5 2.05 0.732 3.96

5.33 22.7 2.07 0.719 3.39

4.31 18.7 2.08 0.706 2.79

3.25 14.4 2.1 0.691 2.15

8.09 31.2 1.96 0.778 4.66

6.2 24.8 2 0.75 3.7

5.22 21.3 2.02 0.735 3.18

4.71 19.4 2.03 0.728 2.9

4.22 17.6 2.04 0.719 2.63

3.18 13.5 2.06 0.707 2.02

2.14 9.28 2.08 0.692 1.39

Note: Double Horizontal Line indicates k l/r limit of 200.

101

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.375 20.78 0.349 0.258 14.62 0.241 5.563 0.188 10.79 0.174 0.134 7.77 0.125 Fy = 46 ksi 59 57 56 55 53 52 50 49 47 45 43 41 38 36 33 31 28 25 23 20 19 17 15 14 13 12 11 10 10 9 9 8 ==== 0.500 26.70 0.465 5.500 0.375 20.53 0.349

Fy=46

ERW

0.258 14.44 0.241

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

158 153 150 146 142 138 133 128 123 118 112 106 99 92 85 78 70 63 56 51 46 42 38 35 32 30 28 26 24 23 ====

111 108 106 103 100 97 94 91 87 83 79 75 71 66 61 56 51 46 41 37 33 31 28 26 24 22 20 19 18 16 15 ====

81 79 77 76 74 72 69 67 64 62 59 56 52 49 46 42 38 34 31 28 25 23 21 19 18 17 15 14 13 12 12 ====

203 196 192 187 182 176 170 163 156 149 141 133 124 115 105 95 85 75 68 61 55 51 46 42 39 36 34 31 29 ====

156 151 148 144 140 136 131 126 121 115 110 103 97 90 83 76 68 61 54 49 44 41 37 34 31 29 27 25 23 22 ====

110 106 104 102 99 96 93 89 86 82 78 74 69 65 60 55 49 44 40 36 32 30 27 25 23 21 20 18 17 16 15 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

5.72 19.5 1.85 0.816 2.91

4.03 14.3 1.88 0.784 2.14

2.95 10.7 1.91 0.767 1.60

2.14 7.90 1.92 0.753 1.18

7.36 23.5 1.79 0.861 3.51

5.65 18.8 1.83 0.826 2.81

3.98 13.8 1.86 0.793 2.06

Note: Double Horizontal Line indicates k l/r limit of 200.

102

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 24.03 0.465 0.375 18.52 0.349 0.312 15.62 0.291 5.000 0.258 13.07 0.241 0.250 12.68 0.233 0.188 9.66 0.174 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 183 176 171 166 161 155 148 141 134 126 117 109 99 89 79 70 62 55 49 44 40 37 34 31 28 26 ==== 141 136 132 129 124 120 115 110 104 98 92 86 79 72 64 56 50 44 40 36 33 30 27 25 23 21 20 ==== 119 114 112 109 105 101 97 93 88 84 78 73 67 61 55 49 43 38 34 31 28 26 24 22 20 18 17 ==== 99 96 94 91 88 85 82 78 74 70 66 61 57 52 47 41 36 33 29 26 24 22 20 18 17 16 14 13 ==== 96 93 91 88 86 83 79 76 72 68 64 60 55 51 46 40 36 32 29 26 23 21 20 18 17 15 14 13 ==== 73 70 69 67 65 63 60 58 55 52 49 46 42 39 35 31 28 25 22 20 18 17 15 14 13 12 11 10 ==== 49 47 46 45 44 42 41 39 37 35 33 31 29 27 24 22 19 17 15 14 13 11 10 10 9 8 8 7 ==== 114 110 106 103 99 95 90 85 80 74 68 62 55 48 42 37 33 29 26 24 21 19 18 16 ==== 82 79 76 74 71 68 65 62 58 54 50 45 41 36 31 27 24 22 19 18 16 15 13 12 11 ==== 65 63 61 59 57 54 52 49 46 43 40 37 33 29 25 22 20 18 16 14 13 12 11 10 9 ==== 0.125 6.51 0.116 0.337 14.98 0.315 0.237 10.79 0.221 4.500 0.188 8.66 0.174

Fy=46

ERW

0.125 5.84 0.116

44 42 41 40 39 37 35 34 32 30 27 25 23 20 18 16 14 12 11 10 9 8 8 7 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

6.62 17.2 1.61 0.962 2.57

5.10 13.9 1.65 0.917 2.08

4.30 12.0 1.67 0.896 1.79

3.60 10.2 1.68 0.882 1.52

3.49 9.94 1.69 0.878 1.48

2.64 7.69 1.71 0.858 1.15

1.78 5.31 1.73 0.838 0.793

4.14 9.12 1.48 1.02 1.36

2.97 6.82 1.51 0.980 1.02

2.36 5.54 1.53 0.958 0.827

1.60 3.84 1.55 0.938 0.573

Note: Double Horizontal Line indicates k l/r limit of 200.

103

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.337 13.18 0.315 0.313 12.33 0.291 0.250 10.01 0.233 0.237 9.52 0.221 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 101 96 93 89 85 80 75 70 64 58 52 45 38 33 29 25 22 20 18 16 15 ==== 94 89 86 83 79 75 70 65 60 55 49 42 36 31 27 24 21 19 17 15 14 13 ==== 76 73 70 67 64 61 57 54 49 45 40 35 30 26 23 20 18 16 14 13 11 10 ==== 72 69 67 64 61 58 55 51 47 43 38 34 29 25 22 19 17 15 14 12 11 10 ==== 69 66 64 61 59 56 52 49 45 41 37 32 28 24 21 18 16 14 13 12 11 10 ==== 67 64 62 60 57 54 51 48 44 40 36 31 27 23 20 18 16 14 13 11 10 9 ==== 58 55 53 51 49 46 44 41 38 34 31 27 23 20 18 15 14 12 11 10 9 8 ==== 4.000 0.226 9.11 0.211 0.220 8.88 0.205 0.188 7.65 0.174

Fy=46

ERW

0.125 5.17 0.116

39 37 36 35 33 32 30 28 26 24 21 19 16 14 12 11 10 9 8 7 6 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

3.65 6.24 1.31 1.17 0.932

3.39 5.87 1.32 1.16 0.877

2.76 4.91 1.33 1.12 0.733

2.62 4.70 1.34 1.11 0.702

2.51 4.52 1.34 1.11 0.675

2.44 4.41 1.34 1.11 0.659

2.09 3.83 1.35 1.09 0.572

1.42 2.67 1.37 1.06 0.399

Note: Double Horizontal Line indicates k l/r limit of 200.

104

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.313 10.65 0.291 0.300 10.25 0.280 0.250 8.68 0.233 3.500 0.216 7.58 0.201 Fy = 46 ksi 57 54 52 50 47 44 40 37 33 29 24 21 17 15 13 12 10 9 8 ==== 0.203 7.15 0.189 0.188 6.65 0.174

Fy=46

ERW

0.125 4.51 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

81 76 73 69 65 61 56 51 45 39 33 27 23 20 18 15 14 12 11 ====

78 74 71 67 63 59 54 49 44 38 32 26 23 19 17 15 13 12 11 ====

66 62 60 57 54 50 46 42 38 33 28 23 20 17 15 13 12 10 9 ====

54 51 49 47 44 41 38 35 31 27 23 19 17 14 12 11 10 9 8 ====

50 47 46 43 41 38 36 32 29 26 22 18 16 13 12 10 9 8 7 ====

34 32 31 29 28 26 24 22 20 18 15 13 11 9 8 7 6 6 5 5 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

2.93 3.81 1.14 1.35 0.569

2.83 3.70 1.14 1.34 0.553

2.39 3.21 1.16 1.30 0.479

2.08 2.84 1.17 1.28 0.424

1.97 2.70 1.17 1.28 0.403

1.82 2.52 1.18 1.26 0.376

1.23 1.77 1.20 1.22 0.264

Note: Double Horizontal Line indicates k l/r limit of 200.

105

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.300 8.65 0.280 0.250 7.34 0.233 0.216 6.42 0.201 0.203 6.06 0.189 3.000 0.188 5.65 0.174 0.152 4.62 0.142 0.134 4.10 0.125 0.120 3.69 0.112 0.250 7.01 0.233 2.875 0.203 5.79 0.189 5.40 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 66 61 58 54 50 45 40 35 29 23 19 16 14 12 10 9 ==== 56 52 49 46 43 39 35 30 25 20 17 14 12 10 9 8 ==== 49 46 43 41 38 34 31 27 22 18 15 13 11 9 8 7 ==== 46 43 41 38 35 32 29 25 21 17 14 12 10 9 8 7 ==== 43 40 38 35 33 30 27 23 20 16 13 11 9 8 7 6 ==== 35 33 31 29 27 25 22 19 16 13 11 9 8 7 6 5 ==== 31 29 28 26 24 22 20 18 15 12 10 8 7 6 5 5 4 ==== 28 26 25 24 22 20 18 16 13 11 9 8 7 6 5 4 4 ==== 53 49 47 43 40 36 32 27 22 18 15 12 10 9 8 ==== 44 41 39 36 33 30 26 23 18 15 12 10 9 8 7 ==== 41 38 36 34 31 28 25 21 17 14 12 10 8 7 6 ====

Fy=46

ERW

0.188

0.125 3.67 0.116

0.174

28 26 25 23 21 19 17 15 12 10 8 7 6 5 4 4 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

2.39 2.24 0.967 1.60 0.335

2.03 1.95 0.982 1.56 0.291

1.77 1.74 0.992 1.53 0.260

1.67 1.66 0.996 1.51 0.248

1.54 1.55 1.00 1.49 0.231

1.27 1.30 1.01 1.47 0.194

1.13 1.17 1.02 1.45 0.175

1.02 1.06 1.02 1.44 0.158

1.93 1.70 0.938 1.63 0.254

1.59 1.45 0.952 1.58 0.217

1.48 1.35 0.957 1.58 0.202

1.01 0.958 0.976 1.52 0.143

Note: Double Horizontal Line indicates k l/r limit of 200.

106

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.250 6.01 0.233 2.500 0.188 4.64 0.174 0.125 3.17 0.116 0.250 5.67 0.233 0.218 5.02 0.204 2.375 0.188 4.39 0.174 Fy = 46 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 46 42 39 35 32 27 22 17 14 11 9 8 7 ==== 35 32 30 27 25 21 18 14 11 9 7 6 5 ==== 24 22 21 19 17 15 13 10 8 6 5 4 4 3 ==== 43 39 36 33 29 24 19 15 12 9 8 7 ==== 38 35 32 29 26 22 17 13 11 9 7 6 ==== 33 30 28 25 22 19 15 12 9 8 6 5 4 ==== 28 25 23 21 19 16 13 10 8 6 5 5 4 ==== 23 21 19 17 16 13 11 9 7 5 4 4 3 ==== 21 18 16 14 11 8 6 5 4 3 ==== 0.154 3.65 0.143 0.125 3.00 0.116 1.900 0.145 2.72 0.135

Fy=46

ERW

1.660 0.140 2.27 0.130

17 15 13 10 8 5 4 3 2 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

1.66 1.08 0.806 1.92 0.161

1.27 0.865 0.825 1.84 0.129

0.87 0.619 0.844 1.76 0.092

1.57 0.910 0.762 2.05 0.136

1.39 0.827 0.771 2.00 0.123

1.20 0.733 0.781 1.94 0.109

1.00 0.627 0.791 1.89 0.094

0.82 0.527 0.800 1.85 0.079

0.75 0.293 0.626 2.43 0.044

0.62 0.184 0.543 2.80 0.027

Note: Double Horizontal Line indicates k l/r limit of 200.

107

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 20.000 0.500 104.13 0.465 0.375 78.60 0.349 0.500 93.45 0.465 18.000 0.375 70.59 0.349 0.500 82.77 0.465 0.438 72.80 0.407 Fy = 50 ksi 597 591 588 584 581 577 573 568 564 559 555 550 544 539 534 528 522 516 510 504 498 491 484 477 470 463 456 449 441 434 426 418 410 402 393 385 376 367 358 349 16.000 0.375 62.58 0.349 0.312 52.28 0.291 0.500 72.09 0.465 14.000 0.375 54.57 0.349

Fy=50

ERW

0.312 45.61 0.291

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

855 848 845 841 837 833 828 824 819 814 809 804 799 793 787 782 776 769 763 757 750 743 736 729 722 715 708 700 692 685 677 669 660 652 644 635 626 618 609 600

645 640 637 634 631 628 625 622 618 614 611 607 603 599 594 590 585 581 576 571 566 561 556 551 546 540 535 529 523 517 512 505 499 493 487 480 474 467 461 454

768 761 758 754 750 745 741 736 731 726 721 716 710 704 698 692 686 679 673 666 659 652 645 637 630 622 614 606 598 590 582 573 564 556 547 538 528 519 509 500

582 577 574 571 568 565 562 558 554 551 547 543 538 534 530 525 520 515 510 505 500 495 489 484 478 472 467 461 454 448 442 436 429 422 416 409 402 395 388 381

681 674 670 666 662 658 653 648 643 638 632 627 621 615 608 602 595 588 581 574 567 559 552 544 536 528 519 511 502 494 485 476 466 457 447 438 428 418 407 397

516 511 508 505 502 499 495 491 488 484 479 475 471 466 462 457 452 447 441 436 430 425 419 413 407 401 395 389 382 375 369 362 355 348 341 333 326 318 311 303

432 428 425 423 420 417 415 412 408 405 402 398 394 391 387 383 378 374 370 365 361 356 351 346 341 336 331 326 320 315 309 304 298 292 286 280 274 268 261 255

594 587 583 579 575 570 565 560 555 549 544 537 531 525 518 511 504 497 489 482 474 466 458 449 441 432 423 414 405 395 386 376 366 356 345 335 324 313 302 290

450 445 442 439 436 432 429 425 421 417 412 408 403 398 393 388 383 377 372 366 360 354 348 342 335 329 322 315 308 301 294 287 279 272 264 256 248 240 231 223

375 371 368 366 363 360 357 354 351 347 344 340 336 332 328 324 319 315 310 305 301 296 290 285 280 275 269 263 258 252 246 240 234 227 221 214 208 201 194 187

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

28.5 1360 6.91 0.210 203

21.5 1040 6.95 0.207 155

25.6 985 6.20 0.234 147

19.4 754 6.24 0.232 113

22.7 685 5.49 0.265 102

19.9 606 5.51 0.263 90.5

17.2 526 5.53 0.262 78.5

14.4 443 5.55 0.260 66.2

19.8 453 4.79 0.306 67.6

15.0 349 4.83 0.301 52.1

12.5 295 4.85 0.297 44.1

108

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 65.42 0.465 12.750 0.375 49.56 0.349 0.250 33.38 0.233 0.625 79.27 0.581 0.500 64.08 0.465 Fy = 50 ksi 528 521 517 513 508 504 499 493 488 482 476 469 463 456 449 442 434 427 419 411 402 394 385 376 367 358 348 339 329 318 308 298 287 276 265 253 241 229 218 207 0.375 48.56 0.349 12.500 0.312 40.61 0.291 0.250 32.71 0.233

Fy=50

ERW

0.188 24.72 0.174*

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

537 530 526 522 518 513 508 503 497 491 485 479 473 466 459 452 444 437 429 421 413 405 396 387 378 369 360 350 340 330 320 310 299 288 277 266 255 243 231 220

408 403 400 397 393 390 386 382 378 374 369 364 360 355 349 344 339 333 327 321 315 309 302 296 289 282 275 268 261 253 245 238 230 222 213 205 196 188 179 170

275 271 269 267 265 263 260 258 255 252 249 246 243 239 236 232 229 225 221 217 213 209 204 200 196 191 186 182 177 172 167 162 156 151 146 140 134 128 122 117

654 645 640 635 630 624 617 610 603 596 588 581 572 564 555 546 536 527 517 507 496 486 475 463 452 440 428 416 404 391 378 365 351 337 323 309 294 279 265 252

399 394 391 388 384 381 377 373 369 365 360 355 350 345 340 335 329 323 318 311 305 299 292 286 279 272 265 258 250 243 235 227 219 211 203 194 185 177 168 159

336 332 329 327 324 321 318 314 311 307 303 299 295 291 287 282 278 273 268 263 258 252 247 241 236 230 224 218 212 205 199 192 186 179 172 165 157 150 143 135

269 266 264 262 260 257 255 252 249 246 243 240 237 234 230 227 223 219 215 211 207 203 198 194 189 185 180 175 170 165 160 155 150 144 139 133 127 121 115 110

197 197 197 197 195 193 191 189 187 185 183 180 178 175 173 170 167 165 162 159 156 152 149 146 143 139 136 132 128 125 121 117 113 109 105 101 96 92 87 83

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

17.9 339 4.35 0.337 50.6

13.6 262 4.39 0.331 39.1

9.16 180 4.43 0.324 26.9

21.8 387 4.22 0.352 57.8

17.6 319 4.26 0.345 47.6

13.3 246 4.30 0.338 36.7

11.2 208 4.32 0.337 31.1

8.98 169 4.34 0.332 25.2

6.74 128 4.36 0.329 19.1

*Slender element section. Diameter-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 3300/Fy.

109

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 78.02 0.581 0.500 63.08 0.465 0.375 47.81 0.349 12.313 0.312 39.99 0.291 0.250 32.21 0.233 0.188 24.35 0.625 77.60 0.500 62.75 0.465 0.375 47.56 0.349 12.250 0.312 39.78 0.291 32.04 0.174* 0.581 Fy = 50 ksi 195 195 195 194 192 190 188 186 184 182 180 177 175 172 170 167 164 161 158 155 152 149 146 143 139 136 132 128 125 121 117 113 109 105 101 97 92 88 83 79 639 630 625 620 614 608 602 595 588 581 573 565 557 548 539 530 521 511 501 491 480 469 458 447 435 424 412 399 387 374 360 347 333 319 305 290 275 261 248 235

Fy=50

ERW

0.250

0.188 24.22 0.174*

0.233

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

642 633 628 623 617 611 605 598 591 584 576 568 560 551 542 533 524 514 504 494 484 473 462 450 439 427 415 403 390 377 364 351 337 323 309 294 279 265 251 239

519 512 508 504 499 495 489 484 479 473 466 460 454 447 440 432 425 417 409 401 393 384 375 366 357 348 338 328 318 308 298 287 276 265 253 242 230 218 207 197

393 388 385 382 378 375 371 367 363 358 354 349 344 339 334 328 323 317 311 305 299 292 286 279 272 265 258 251 243 235 228 220 212 203 195 186 177 168 160 152

330 326 323 321 318 315 312 308 305 301 297 293 289 285 280 276 271 266 261 256 251 246 240 235 229 223 217 211 205 199 192 185 179 172 165 158 150 143 135 129

265 262 260 258 255 253 250 248 245 242 239 236 233 229 226 222 218 214 211 206 202 198 194 189 185 180 175 170 165 160 155 150 144 139 133 128 122 116 110 104

516 509 505 501 496 492 486 481 475 470 463 457 450 444 437 429 422 414 406 398 389 381 372 363 354 344 335 325 315 305 294 284 273 261 250 238 227 215 204 194

390 385 382 379 375 372 368 364 360 355 351 346 341 336 331 325 320 314 308 302 296 289 283 276 269 262 255 248 240 233 225 217 209 200 192 183 174 165 157 149

327 323 320 318 315 312 309 305 302 298 294 290 286 282 278 273 268 264 259 254 248 243 238 232 226 221 215 208 202 196 189 183 176 169 162 155 148 140 133 126

264 261 259 256 254 252 249 247 244 241 238 235 231 228 224 221 217 213 209 205 201 197 192 188 183 179 174 169 164 159 154 148 143 137 132 126 120 114 108 103

194 194 194 192 191 189 187 185 183 181 178 176 174 171 168 166 163 160 157 154 151 148 145 141 138 134 131 127 123 120 116 112 108 104 100 95 91 86 82 78

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

21.4 369 4.15 0.357 55.1

17.3 304 4.19 0.350 45.4

13.1 235 4.23 0.343 35.1

11.0 199 4.25 0.340 29.7

8.84 161 4.27 0.338 24.0

6.64 122 4.29 0.335 18.2

21.3 363 4.13 0.359 54.2

17.2 299 4.17 0.352 44.7

13.0 231 4.21 0.345 34.5

10.9 196 4.23 0.341 29.3

8.80 159 4.25 0.339 23.7

6.60 120 4.27 0.337 17.9

*Slender element section. Diameter-Thickness ratio exceeds AISC "Specification" Section B5.1 limiting value of 3300/Fy.

110

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 70.92 0.581 0.500 57.41 0.465 0.375 43.56 0.349 11.250 0.312 36.45 0.291 0.250 29.37 0.233 Fy = 50 ksi 242 238 236 234 232 229 227 224 221 218 215 212 208 205 201 197 193 189 185 181 177 172 168 163 158 153 148 143 138 132 127 121 116 110 104 98 93 88 84 79 0.188 22.21 0.174 0.500 54.74 0.465 10.750 0.365 40.48 0.340

Fy=50

ERW

0.250 28.04 0.233

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

585 576 571 566 560 554 547 540 533 525 517 509 500 491 482 472 463 452 442 431 420 409 397 385 373 361 348 335 322 308 294 280 265 250 236 223 211 200 190 181

474 467 463 459 454 449 444 438 432 426 420 413 406 399 392 384 376 368 360 351 342 333 324 315 305 295 285 275 264 253 242 230 219 207 195 184 175 166 157 149

360 355 352 348 345 341 337 333 329 324 319 314 309 304 298 293 287 281 275 268 262 255 248 241 234 226 219 211 203 195 186 178 169 160 151 143 135 128 122 116

300 296 293 290 288 284 281 278 274 270 266 262 258 254 249 244 239 234 229 224 219 213 207 201 195 189 183 177 170 163 156 149 142 135 127 120 114 108 103 98

182 179 177 176 174 172 170 168 166 164 161 159 156 154 151 148 145 142 139 136 133 130 126 123 119 116 112 108 104 100 96 92 88 83 79 74 70 67 63 60

450 443 439 435 430 425 419 414 408 402 395 388 381 374 367 359 351 342 334 325 316 307 298 288 278 268 257 247 236 224 213 201 189 178 168 159 151 143 136 129

333 328 325 322 318 315 311 307 302 298 293 288 283 278 272 266 261 255 248 242 236 229 222 215 208 200 193 185 177 169 160 152 143 135 127 120 114 108 102 97

231 227 225 223 221 218 216 213 210 207 204 200 197 193 189 186 182 177 173 169 164 160 155 150 145 140 135 130 124 119 113 107 101 96 90 85 81 77 73 69

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

19.5 278 3.78 0.395 41.5

15.8 229 3.82 0.388 34.2

12.0 178 3.86 0.379 26.6

10.0 151 3.88 0.373 22.5

8.06 122 3.90 0.372 18.2

6.05 92.9 3.92 0.366 13.9

15.0 199 3.64 0.405 29.7

11.1 151 3.68 0.395 22.5

7.70 106 3.72 0.390 15.8

111

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.625 62.58 0.581 0.500 50.73 0.465 0.375 38.55 0.349 10.000 0.312 32.28 0.291 0.250 26.03 0.233 0.188 19.70 0.174 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 516 507 502 496 490 484 477 470 462 454 445 437 428 418 408 398 388 377 366 354 342 330 318 305 292 279 265 251 236 221 207 194 183 172 162 154 145 138 131 124 417 410 406 401 397 391 386 380 374 368 361 354 347 339 331 323 315 306 298 288 279 269 260 250 239 228 218 206 195 183 171 161 151 142 134 127 120 114 108 103 318 313 310 306 303 299 295 290 286 281 276 270 265 259 253 247 241 235 228 221 214 207 200 192 184 176 168 159 151 142 133 125 117 111 104 99 93 89 84 80 266 262 259 257 254 250 247 243 239 235 231 227 222 218 213 208 203 197 192 186 180 174 168 162 155 149 142 135 128 120 113 106 99 94 88 84 79 75 71 68 215 211 209 207 204 202 199 196 193 190 186 183 179 176 172 168 163 159 155 150 146 141 136 131 126 120 115 109 104 98 92 86 81 76 72 68 64 61 58 55 161 158 157 155 153 152 149 147 145 143 140 138 135 132 129 126 123 120 117 113 110 106 103 99 95 91 87 83 79 74 70 65 62 58 55 52 49 46 44 42 402 395 391 386 381 376 370 364 358 352 345 338 330 322 314 306 298 289 280 270 261 251 241 230 219 208 197 185 173 162 152 142 134 126 119 113 107 101 96 91 306 301 298 294 290 287 282 278 273 268 263 258 252 246 240 234 228 221 214 207 200 193 185 178 170 161 153 144 135 126 118 111 104 98 93 88 83 79 75 71 256 251 249 246 243 240 236 233 229 225 220 216 211 206 202 196 191 186 180 174 168 162 156 149 143 136 129 122 114 107 100 94 88 83 79 74 70 67 63 60 206 203 200 198 196 193 190 187 184 181 178 174 170 167 163 159 154 150 146 141 136 131 126 121 116 110 105 99 93 87 82 77 72 68 64 61 57 54 52 49 0.500 48.73 0.465 0.375 37.05 0.349 9.625 0.312 31.03 0.291 0.250 25.03 0.233

Fy=50

ERW

0.188 18.95 0.174

155 152 151 149 147 145 143 141 139 136 134 131 129 126 123 120 116 113 110 106 103 99 96 92 88 84 80 75 71 66 62 58 55 52 49 46 44 41 39 37

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

17.2 191 3.34 0.450 28.5

13.9 159 3.38 0.437 23.7

10.6 123 3.41 0.431 18.4

8.88 105 3.43 0.423 15.7

7.15 85.3 3.45 0.419 12.7

5.37 64.8 3.47 0.414 9.68

13.4 141 3.24 0.457 21.1

10.2 110 3.28 0.446 16.4

8.53 93.0 3.30 0.441 13.9

6.87 75.9 3.32 0.436 11.3

5.17 57.7 3.34 0.431 8.62

112

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 44.06 0.465 0.375 33.54 0.349 8.750 0.312 28.12 0.291 0.250 22.70 0.233 0.188 17.19 0.174 0.500 43.39 0.465 0.375 33.04 0.349 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 363 356 352 347 342 336 331 324 318 311 304 296 288 280 272 263 254 245 235 225 215 205 194 183 171 159 148 137 128 120 112 105 99 93 88 83 79 75 71 67 276 271 268 264 260 256 252 247 243 237 232 226 221 215 208 202 195 188 181 174 166 158 150 142 133 124 116 107 100 94 88 82 77 73 69 65 62 58 55 53 232 227 225 222 219 215 212 208 204 200 195 190 186 181 175 170 164 159 153 147 140 134 127 120 113 106 98 91 85 80 75 70 66 62 59 55 52 50 47 45 187 183 181 179 176 174 171 168 164 161 157 154 150 146 142 137 133 128 124 119 114 109 103 98 92 86 80 75 70 65 61 57 54 51 48 45 43 41 38 37 141 138 136 135 133 131 129 126 124 121 119 116 113 110 107 104 100 97 94 90 86 82 78 74 70 66 61 57 53 50 46 44 41 39 36 34 33 31 29 28 357 350 346 341 336 330 324 318 312 305 298 290 282 274 266 257 248 239 229 219 209 198 187 176 164 152 141 131 123 115 107 101 95 89 84 80 75 71 68 64 272 267 264 260 256 252 248 243 238 233 228 222 216 210 204 197 191 184 176 169 161 153 145 137 128 119 111 103 96 90 84 79 74 70 66 62 59 56 53 50 236 231 228 225 222 218 215 211 206 202 197 193 188 182 177 171 166 160 153 147 141 134 127 120 112 105 97 90 84 79 74 69 65 61 58 55 52 49 47 44 184 181 178 176 174 171 168 165 162 158 155 151 147 143 139 135 130 125 121 116 111 105 100 95 89 83 77 72 67 62 58 55 52 49 46 43 41 39 37 35 139 136 134 133 131 129 127 124 122 119 117 114 111 108 105 102 98 95 91 88 84 80 76 72 68 63 59 55 51 48 45 42 39 37 35 33 31 30 28 27 239 234 231 227 223 219 214 209 204 199 193 187 181 174 167 160 153 146 138 130 122 113 104 96 88 81 76 70 65 61 57 54 51 48 45 43 40 38 36 34 8.625 0.322 28.55 0.300 0.250 22.36 0.233 0.188 16.94 0.174 0.375 29.04 0.349

Fy=50

ERW

7.625 0.328 25.56 0.305 0.125 10.01 0.166

210 206 203 199 196 192 188 184 179 175 170 164 159 153 147 141 135 128 122 115 107 100 92 85 78 72 67 62 58 54 51 48 45 42 40 38 36 34 32 30

82 80 79 78 77 75 74 72 71 69 67 65 63 61 59 56 54 51 49 46 44 41 38 35 32 30 28 26 24 22 21 20 18 17 16 16 15 14 13 13

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

12.1 104 2.93 0.509 15.5

9.21 81.4 2.97 0.495 12.2

7.73 69.3 2.99 0.488 10.3

6.23 56.6 3.01 0.482 8.45

4.69 43.1 3.03 0.476 6.44

11.9 99.5 2.89 0.516 14.9

9.07 77.8 2.93 0.503 11.6

7.85 68.1 2.95 0.497 10.2

6.14 54.1 2.97 0.489 8.08

4.62 41.3 2.99 0.482 6.17

7.98 52.9 2.58 0.575 7.90

7.01 47.1 2.59 0.567 7.03

2.74 19.3 2.66 0.541 2.88

113

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 37.38 0.465 0.375 28.54 0.349 7.500 0.312 23.95 0.291 0.250 19.36 0.233 0.188 14.68 0.174 0.500 34.71 0.465 Fy = 50 ksi 287 279 275 270 264 258 252 245 238 230 222 214 205 196 186 176 166 155 144 133 121 110 101 93 85 79 73 68 63 59 55 52 49 46 44 41 39 37 ==== 0.375 26.53 0.349 0.312 22.29 0.291 7.000 0.250 18.02 0.233 0.188 13.68 0.174

Fy=50

ERW

0.125 9.18 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

309 302 297 292 287 281 275 268 261 254 246 238 229 220 211 202 192 182 171 160 149 137 125 115 106 98 91 84 79 74 69 65 61 57 54 51 48 46 44 41

235 230 226 223 219 214 210 205 200 194 188 182 176 169 162 155 148 140 133 124 116 107 98 90 83 77 71 66 62 58 54 51 48 45 42 40 38 36 34 33

198 193 190 187 184 180 176 172 168 163 159 154 148 143 137 131 125 119 112 106 99 91 84 77 71 66 61 57 53 49 46 43 41 38 36 34 32 31 29 28

160 156 154 151 149 146 143 139 136 132 128 124 120 116 111 107 102 97 92 86 81 75 69 63 58 54 50 46 43 40 38 36 33 32 30 28 27 25 24 23

120 117 116 114 112 110 107 105 102 100 97 94 91 87 84 81 77 73 69 65 61 57 53 48 45 41 38 35 33 31 29 27 26 24 23 21 20 19 18 17

219 213 210 206 202 197 193 187 182 176 170 164 157 151 143 136 128 120 112 104 95 86 79 72 67 62 57 53 50 46 43 41 38 36 34 32 30 29 27 ====

184 179 176 173 170 166 162 158 153 149 144 138 133 127 121 115 109 102 95 88 81 74 67 62 57 53 49 46 42 40 37 35 33 31 29 28 26 25 23 ====

149 145 143 140 137 134 131 128 124 120 116 112 108 103 99 94 89 83 78 72 66 61 55 51 47 43 40 37 35 33 31 29 27 25 24 23 21 20 19 ====

112 109 107 106 104 101 99 96 94 91 88 85 82 78 75 71 67 63 59 55 51 46 42 39 36 33 31 29 27 25 23 22 21 19 18 17 16 16 15 14

75 73 72 71 70 68 67 65 63 61 59 57 55 53 51 48 46 43 40 38 35 32 29 27 25 23 21 20 18 17 16 15 14 13 13 12 11 11 10 10

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

10.3 63.9 2.49 0.604 9.54

7.84 50.2 2.53 0.586 7.50

6.59 42.9 2.55 0.593 6.41

5.32 35.2 2.57 0.567 5.26

4.00 26.9 2.59 0.558 4.02

9.55 51.2 2.32 0.653 7.65

7.29 40.4 2.35 0.632 6.03

6.13 34.6 2.37 0.620 5.17

4.95 28.4 2.39 0.610 4.24

3.73 21.7 2.41 0.602 3.24

2.51 14.9 2.43 0.590 2.23

Note: Double Horizontal Line indicates k l/r limit of 200.

114

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 34.04 0.465 0.375 26.03 0.349 6.875 0.312 21.87 0.291 0.250 17.69 0.233 0.188 13.43 0.174 0.500 32.71 0.465 0.432 28.57 0.403 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 281 273 269 264 258 252 246 239 231 224 216 207 198 189 179 169 159 148 137 125 113 103 95 87 80 74 69 64 59 56 52 49 46 43 41 39 37 ==== 215 209 206 202 198 193 189 183 178 172 166 160 153 146 139 132 124 116 107 99 90 82 75 69 63 59 54 51 47 44 41 39 36 34 32 31 29 27 ==== 181 176 173 170 167 163 159 154 150 145 140 135 129 124 118 112 105 98 91 84 77 70 64 59 54 50 46 43 40 38 35 33 31 29 28 26 25 23 ==== 146 142 140 137 135 132 128 125 121 118 114 109 105 100 96 91 86 80 75 69 63 58 53 48 45 41 38 36 33 31 29 27 26 24 23 21 20 19 18 ==== 110 107 105 103 101 99 97 94 92 89 86 83 79 76 73 69 65 61 57 53 48 44 40 37 34 32 29 27 25 24 22 21 20 18 17 16 16 15 14 ==== 270 263 258 253 247 241 234 227 220 212 204 195 186 176 166 156 145 134 123 111 101 92 84 77 71 66 61 57 53 49 46 43 41 38 36 34 ==== 236 230 226 221 217 211 206 199 193 186 179 172 164 155 147 138 129 119 109 99 90 82 75 69 63 59 54 50 47 44 41 39 36 34 32 31 ==== 206 201 197 194 189 185 180 175 169 163 157 150 144 137 129 122 114 105 97 88 80 73 66 61 56 52 48 45 42 39 37 34 32 30 29 27 26 ==== 174 169 166 163 159 156 152 147 143 138 133 127 122 116 110 103 97 90 83 75 68 62 57 52 48 45 41 38 36 33 31 29 28 26 25 23 22 ==== 157 152 150 147 144 140 137 133 129 124 120 115 110 105 99 94 88 82 75 69 62 57 52 48 44 41 38 35 33 30 29 27 25 24 22 21 20 ==== 140 137 134 132 129 126 123 119 116 112 108 103 99 94 89 84 79 74 68 62 56 51 47 43 40 37 34 32 29 28 26 24 23 21 20 19 18 ==== 0.375 25.03 0.349 0.312 21.04 0.291 6.625 0.280 18.97 0.261 0.250 17.02 0.233

Fy=50

ERW

0.188 12.92 0.174

0.125 8.68 0.116

106 103 101 100 97 95 93 90 87 84 81 78 75 71 68 64 60 56 52 48 43 39 36 33 30 28 26 24 23 21 20 19 17 16 16 15 14 13 ====

71 69 68 67 65 64 62 61 59 57 55 53 51 48 46 43 41 38 35 32 29 27 25 23 21 19 18 17 15 14 14 13 12 11 11 10 9 9 ====

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

9.36 48.3 2.27 0.666 7.21

7.16 38.2 2.31 0.644 5.70

6.02 32.7 2.33 0.633 4.88

4.86 26.8 2.35 0.623 4.00

3.66 20.6 2.37 0.611 3.08

9.00 42.9 2.18 0.695 6.41

7.88 38.3 2.20 0.682 5.72

6.88 34.0 2.22 0.670 5.08

5.79 29.1 2.24 0.659 4.35

5.22 26.5 2.25 0.653 3.96

4.68 23.9 2.26 0.649 3.57

3.53 18.4 2.28 0.635 2.75

2.37 12.6 2.30 0.623 1.88

Note: Double Horizontal Line indicates k l/r limit of 200.

115

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 30.04 0.465 0.375 23.03 0.349 6.125 0.312 19.37 0.291 0.250 15.69 0.233 0.188 11.92 0.174 0.500 29.37 0.375 22.53 0.312 18.95 0.291 6.000 0.280 17.11 0.261 0.250 15.35 0.233 11.67 0.465 0.349 Fy = 50 ksi 243 235 230 225 219 213 206 198 190 182 173 164 154 144 134 123 111 99 89 81 73 67 61 56 52 48 44 41 38 36 34 31 ==== 186 180 177 173 168 164 158 153 147 141 134 127 120 113 105 97 88 79 71 64 58 53 49 45 41 38 35 33 31 29 27 25 24 ====

Fy=50

ERW

0.188

0.125 7.84 0.116

0.174

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

248 241 236 231 225 218 212 204 196 188 180 171 161 151 141 130 119 107 96 87 79 72 65 60 55 51 48 44 41 38 36 34 32 ====

190 184 181 177 172 168 163 157 151 145 139 132 125 118 110 102 94 85 76 69 63 57 52 48 44 41 38 35 33 31 29 27 25 24 ====

160 155 152 149 145 141 137 133 128 123 118 112 106 100 94 87 80 73 66 59 54 49 45 41 38 35 32 30 28 26 25 23 22 20 ====

129 126 123 121 118 114 111 107 104 100 95 91 86 81 76 71 65 59 54 48 44 40 37 34 31 29 27 25 23 21 20 19 18 17 ====

98 95 93 91 89 86 84 81 78 75 72 69 65 62 58 54 50 46 41 37 34 31 28 26 24 22 20 19 18 17 15 15 14 13 12 ====

157 152 149 146 142 138 134 129 124 119 114 108 102 96 89 83 76 68 61 55 50 46 42 38 35 33 30 28 26 25 23 22 20 ====

141 137 134 131 128 125 121 117 112 108 103 98 92 87 81 75 69 62 56 50 46 42 38 35 32 30 28 26 24 22 21 20 18 ====

127 123 120 118 115 112 108 105 101 97 92 88 83 78 73 68 62 56 50 46 41 38 34 32 29 27 25 23 22 20 19 18 17 16 ====

95 93 91 89 87 84 82 79 76 73 70 67 63 59 56 52 47 43 39 35 32 29 26 24 22 21 19 18 17 16 15 14 13 12 ====

64 62 61 60 58 57 55 53 51 49 47 45 43 40 38 35 32 30 27 24 22 20 18 17 15 14 13 12 11 11 10 9 9 8 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

8.27 33.3 2.01 0.761 4.97

6.33 26.5 2.05 0.732 3.96

5.33 22.7 2.07 0.719 3.39

4.31 18.7 2.08 0.706 2.79

3.25 14.4 2.10 0.691 2.15

8.09 31.2 1.96 0.778 4.66

6.20 24.8 2.00 0.750 3.70

5.22 21.3 2.02 0.735 3.18

4.71 19.4 2.03 0.728 2.90

4.22 17.6 2.04 0.719 2.63

3.18 13.5 2.06 0.707 2.02

2.14 9.28 2.08 0.692 1.39

Note: Double Horizontal Line indicates k l/r limit of 200.

116

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.375 20.78 0.349 0.258 14.62 0.241 5.563 0.188 10.79 0.174 0.134 7.77 0.125 Fy = 50 ksi 64 62 61 59 58 56 54 52 50 48 45 43 40 37 34 31 28 25 23 20 19 17 15 14 13 12 11 10 10 9 9 8 ==== 0.500 26.70 0.465 5.500 0.375 20.53 0.349

Fy=50

ERW

0.258 14.44 0.241

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

172 166 162 158 154 149 143 138 132 125 118 111 104 96 88 79 70 63 56 51 46 42 38 35 32 30 28 26 24 23 ====

121 117 114 112 108 105 101 97 93 89 84 79 74 69 63 57 51 46 41 37 33 31 28 26 24 22 20 19 18 16 15 ====

89 86 84 82 80 77 75 72 69 66 62 59 55 51 47 43 39 34 31 28 25 23 21 19 18 17 15 14 13 12 12 ====

221 213 208 203 197 190 183 175 167 158 149 139 129 118 107 96 85 75 68 61 55 51 46 42 39 36 34 31 29 ====

170 164 160 156 151 146 141 135 129 123 116 109 101 93 85 77 68 61 54 49 44 41 37 34 31 29 27 25 23 22 ====

119 115 113 110 107 104 100 96 92 87 83 78 73 67 61 56 49 44 40 36 32 30 27 25 23 21 20 18 17 16 15 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

5.72 19.5 1.85 0.816 2.91

4.03 14.3 1.88 0.784 2.14

2.95 10.7 1.91 0.767 1.60

2.14 7.90 1.92 0.753 1.18

7.36 23.5 1.79 0.861 3.51

5.65 18.8 1.83 0.826 2.81

3.98 13.8 1.86 0.793 2.06

Note: Double Horizontal Line indicates k l/r limit of 200.

117

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.500 24.03 0.465 0.375 18.52 0.349 0.312 15.62 0.291 5.000 0.258 13.07 0.241 0.250 12.68 0.233 0.188 9.66 0.174 Fy = 50 ksi 79 76 74 72 70 67 65 62 59 55 52 48 44 40 36 31 28 25 22 20 18 17 15 14 13 12 11 10 ==== 0.125 6.51 0.116 0.337 14.98 0.315 0.237 10.79 0.221 4.500 0.188 8.66 0.174

Fy=50

ERW

0.125 5.84 0.116

0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

199 191 186 180 174 167 159 151 142 133 123 113 102 91 79 70 62 55 49 44 40 37 34 31 28 26 ====

153 147 143 139 134 129 123 117 111 104 97 89 81 73 64 56 50 44 40 36 33 30 27 25 23 21 20 ====

129 124 121 117 113 109 105 100 94 89 83 76 70 63 55 49 43 38 34 31 28 26 24 22 20 18 17 ====

108 104 101 98 95 92 88 84 79 74 69 64 59 53 47 41 36 33 29 26 24 22 20 18 17 16 14 13 ====

105 101 98 95 92 89 85 81 77 72 68 63 57 52 46 40 36 32 29 26 23 21 20 18 17 15 14 13 ====

53 51 50 49 47 46 44 42 40 37 35 33 30 27 24 22 19 17 15 14 13 11 10 10 9 8 8 7 ====

124 119 115 111 107 102 96 91 84 78 71 63 56 48 42 37 33 29 26 24 21 19 18 16 ====

89 85 83 80 77 73 70 66 61 57 52 47 41 36 31 27 24 22 19 18 16 15 13 12 11 ====

71 68 66 64 61 59 56 52 49 46 42 38 34 29 25 22 20 18 16 14 13 12 11 10 9 ====

48 46 45 43 42 40 38 36 34 31 29 26 23 20 18 16 14 12 11 10 9 8 8 7 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

6.62 17.2 1.61 0.962 2.57

5.10 13.9 1.65 0.917 2.08

4.30 12.0 1.67 0.896 1.79

3.60 10.2 1.68 0.882 1.52

3.49 9.94 1.69 0.878 1.48

2.64 7.69 1.71 0.858 1.15

1.78 5.31 1.73 0.838 0.793

4.14 9.12 1.48 1.02 1.36

2.97 6.82 1.51 0.980 1.02

2.36 5.54 1.53 0.958 0.827

1.60 3.84 1.55 0.938 0.573

Note: Double Horizontal Line indicates k l/r limit of 200.

118

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.337 13.18 0.315 0.313 12.33 0.291 0.250 10.01 0.233 0.237 9.52 0.221 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 110 104 100 96 91 86 80 74 68 61 53 45 38 33 29 25 22 20 18 16 15 ==== 102 97 93 89 85 80 75 69 63 57 50 43 36 31 27 24 21 19 17 15 14 13 ==== 83 79 76 73 69 65 61 57 52 47 41 35 30 26 23 20 18 16 14 13 11 10 ==== 79 75 72 69 66 62 58 54 49 45 39 34 29 25 22 19 17 15 14 12 11 10 ==== 75 72 69 66 63 60 56 52 47 43 38 32 28 24 21 18 16 14 13 12 11 10 ==== 73 70 67 64 61 58 54 50 46 42 37 32 27 23 20 18 16 14 13 11 10 9 ==== 63 60 58 55 53 50 47 43 40 36 32 27 23 20 18 15 14 12 11 10 9 8 ==== 4.000 0.226 9.11 0.211 0.220 8.88 0.205 0.188 7.65 0.174

Fy=50

ERW

0.125 5.17 0.116

43 41 39 38 36 34 32 30 27 25 22 19 16 14 12 11 10 9 8 7 6 6 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

3.65 6.24 1.31 1.17 0.932

3.39 5.87 1.32 1.16 0.877

2.76 4.91 1.33 1.12 0.733

2.62 4.70 1.34 1.11 0.702

2.51 4.52 1.34 1.11 0.675

2.44 4.41 1.34 1.11 0.659

2.09 3.83 1.35 1.09 0.572

1.42 2.67 1.37 1.06 0.399

Note: Double Horizontal Line indicates k l/r limit of 200.

119

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.313 10.65 0.291 0.300 10.25 0.280 0.250 8.68 0.233 3.500 0.216 7.58 0.201 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 88 83 79 75 70 65 59 53 47 39 33 27 23 20 18 15 14 12 11 ==== 85 80 76 72 68 63 57 51 45 38 32 26 23 19 17 15 13 12 11 ==== 72 67 65 61 58 53 49 44 39 33 28 23 20 17 15 13 12 10 9 ==== 62 59 56 53 50 47 43 39 34 29 24 21 17 15 13 12 10 9 8 ==== 59 56 53 51 48 44 41 37 32 28 23 19 17 14 12 11 10 9 8 ==== 55 51 49 47 44 41 38 34 30 26 22 18 16 13 12 10 9 8 7 ==== 0.203 7.15 0.189 0.188 6.65 0.174

Fy=50

ERW

0.125 4.51 0.116

37 35 33 32 30 28 26 23 21 18 15 13 11 9 8 7 6 6 5 5 ====

2.93

2.83

2.39

2.08

1.97

1.82

1.23

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6 Note: Double Horizontal Line indicates k l/r limit of 200.

4

3.81 1.14 1.35 0.569

3.70 1.14 1.34 0.553

3.21 1.16 1.30 0.479

2.84 1.17 1.28 0.424

2.70 1.17 1.28 0.403

2.52 1.18 1.26 0.376

1.77 1.20 1.19 0.264

120

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.300 8.65 0.280 0.250 7.34 0.233 0.216 6.42 0.201 3.000 0.203 6.06 0.189 0.188 5.65 0.174 0.152 4.62 0.142 0.134 4.10 0.125 0.120 3.69 0.112 0.250 7.01 0.233 2.875 0.203 5.79 0.189 5.40 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 72 66 63 58 53 48 42 36 29 23 19 16 14 12 10 9 ==== 61 56 53 50 46 41 36 31 25 20 17 14 12 10 9 8 ==== 53 49 47 44 40 36 32 27 22 18 15 13 11 9 8 7 ==== 50 47 44 41 38 34 30 26 21 17 14 12 10 9 8 7 ==== 46 43 41 38 35 32 28 24 20 16 13 11 9 8 7 6 ==== 38 35 34 31 29 26 23 20 17 13 11 9 8 7 6 5 ==== 34 32 30 28 26 24 21 18 15 12 10 8 7 6 5 5 4 ==== 31 28 27 25 23 21 19 16 14 11 9 8 7 6 5 4 4 ==== 58 53 50 47 43 38 33 27 22 18 15 12 10 9 8 ==== 48 44 42 39 35 32 28 23 18 15 12 10 9 8 7 ==== 44 41 39 36 33 30 26 22 17 14 12 10 8 7 6 ====

Fy=50

ERW

0.188

0.125 3.67 0.116

0.174

30 28 27 25 23 20 18 15 12 10 8 7 6 5 4 4 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

2.39 2.24 0.967 1.60 0.335

2.03 1.95 0.982 1.56 0.291

1.77 1.74 0.992 1.53 0.260

1.67 1.66 0.996 1.51 0.248

1.54 1.55 1.00 1.49 0.231

1.27 1.30 1.01 1.47 0.194

1.13 1.17 1.02 1.45 0.175

1.02 1.06 1.02 1.44 0.158

1.93 1.70 0.938 1.63 0.254

1.59 1.45 0.952 1.58 0.217

1.48 1.35 0.957 1.58 0.202

1.01 0.958 0.976 1.52 0.143

Note: Double Horizontal Line indicates k l/r limit of 200.

121

HSS / Round Structural Steel Tubing

Allowable Concentric Loads in Kips

Nominal Outside Diameter Wall Thickness Weight Per Foot Design Wall Thickness 0.250 6.01 0.233 2.500 0.188 4.64 0.174 0.125 3.17 0.116 0.250 5.67 0.233 0.218 5.02 0.204 2.375 0.188 4.39 0.174 Fy = 50 ksi 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Effective length KL in feet 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 50 45 42 38 33 28 23 17 14 11 9 8 7 ==== 38 35 32 29 26 22 18 14 11 9 7 6 5 ==== 26 24 22 20 18 16 13 10 8 6 5 4 4 3 ==== 47 42 39 35 30 25 19 15 12 9 8 7 ==== 42 38 35 31 27 23 17 13 11 9 7 6 ==== 36 32 30 27 24 20 15 12 9 8 6 5 4 ==== 30 27 25 23 20 17 13 10 8 6 5 5 4 ==== 25 22 21 19 16 14 11 9 7 5 4 4 3 ==== 23 20 17 15 12 8 6 5 4 3 ==== 0.154 3.65 0.143 0.125 3.00 0.116 1.900 0.145 2.72 0.135

Fy=50

ERW

1.660 0.140 2.27 0.130

19 16 13 11 8 5 4 3 2 ====

PROPERTIES

Area, In.2 I, In. r, In. B, Bending Factor a ÷ 10 6

4

1.66 1.08 0.806 1.92 0.161

1.27 0.865 0.825 1.84 0.129

0.87 0.619 0.844 1.76 0.092

1.57 0.910 0.762 2.05 0.136

1.39 0.827 0.771 2.00 0.123

1.20 0.733 0.781 1.94 0.109

1.00 0.627 0.791 1.89 0.094

0.82 0.527 0.800 1.85 0.079

0.75 0.293 0.626 2.43 0.044

0.62 0.184 0.543 2.80 0.027

Note: Double Horizontal Line indicates k l/r limit of 200.

122

HSS / Structural Steel Tubing

NOTES

123

HSS / Structural Steel Tubing

Allowable Stresses for Compression Members

Fy = 42 ksi minimum specified yield stress steel

Kl r Fa (ksi) Kl r Fa (ksi) Kl r Fa (ksi) Kl r Fa (ksi) Kl r Fa (ksi)

Fy= 46 ksi minimum specified yield stress steel

Kl r Fa (ksi) Kl r Fa (ksi) Kl r Fa (ksi)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

25.15 25.10 25.05 24.99 24.94 24.88 24.82 24.76 24.70 24.63 24.57 24.50 24.43 24.36 24.29 24.22 24.15 24.07 24.00 23.92 23.84 23.76 23.68 23.59 23.51 23.42 23.33 23.24 23.15 23.06 22.97 22.88 22.78 22.69 22.59 22.49 22.39 22.29 22.19 22.08 21.98 21.87 21.77 21.66 21.55 21.44 21.33 21.22 21.10 20.99

51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

20.87 20.76 20.64 20.52 20.40 20.28 20.16 20.03 19.91 19.79 19.66 19.53 19.40 19.27 19.14 19.01 18.88 18.75 18.61 18.48 18.34 18.20 18.06 17.92 17.78 17.64 17.50 17.35 17.21 17.06 16.92 16.77 16.62 16.47 16.32 16.17 16.01 15.86 15.71 15.55 15.39 15.23 15.07 14.91 14.75 14.59 14.43 14.26 14.09 13.93

101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150

13.76 13.59 13.42 13.25 13.08 12.90 12.73 12.55 12.37 12.19 12.01 11.83 11.65 11.47 11.28 11.10 10.91 10.72 10.55 10.37 10.20 10.03 9.87 9.71 9.56 9.41 9.26 9.11 8.97 8.84 8.70 8.57 8.44 8.32 8.19 8.07 7.96 7.84 7.73 7.62 7.51 7.41 7.30 7.20 7.10 7.01 6.91 6.82 6.73 6.64

151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200

6.55 6.46 6.38 6.30 6.22 6.14 6.06 5.98 5.91 5.83 5.76 5.69 5.62 5.55 5.49 5.42 5.35 5.29 5.23 5.17 5.11 5.05 4.99 4.93 4.88 4.82 4.77 4.71 4.66 4.61 4.56 4.51 4.46 4.41 4.36 4.32 4.27 4.23 4.18 4.14 4.09 4.05 4.01 3.97 3.93 3.89 3.85 3.81 3.77 3.73

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

27.54 27.48 27.42 27.36 27.30 27.23 27.16 27.09 27.02 26.95 26.87 26.79 26.72 26.63 26.55 26.47 26.38 26.29 26.21 26.11 26.02 25.93 25.83 25.73 25.64 25.54 25.43 25.33 25.23 25.12 25.01 24.90 24.79 24.68 24.56 24.45 24.33 24.21 24.10 23.97 23.85 23.73 23.60 23.48 23.35 23.22 23.09 22.96 22.83 22.69

51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

22.56 22.42 22.28 22.14 22.00 21.86 21.72 21.57 21.43 21.28 21.13 20.98 20.83 20.68 20.53 20.37 20.22 20.06 19.90 19.74 19.58 19.42 19.26 19.10 18.93 18.76 18.60 18.43 18.26 18.08 17.91 17.74 17.56 17.39 17.21 17 03 16.85 16.67 16.48 16.30 16.12 15.93 15.74 15.55 15.36 15.17 14.97 14.78 14.58 14.39

101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150

14.19 13.99 13.79 13.58 13.38 13.17 12.96 12.75 12.54 12.33 12.12 11.90 11.69 11.49 11.29 11.10 10.91 10.72 10.55 10.37 10.20 10.03 9.87 9.71 9.56 9.41 9.26 9.11 8.97 8.84 8.70 8.57 8.44 8.32 8.19 8.07 7.96 7.84 7.73 7.62 7.51 7.41 7.30 7.20 7.10 7.01 6.91 6.82 6.73 6.64

151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 1 91 1 92 1 93 1 94 1 95 1 96 1 97 198 199 200

6.55 6.46 6.38 6.30 6.22 6.14 6.06 5.98 5.91 5.83 5.76 5.69 5.62 5.55 5.49 5.42 5.35 5.29 5.23 5.17 5.11 5.05 4.99 4.93 4.88 4.82 4.77 4.71 4.66 4.61 4.56 4.51 4.46 4.41 4.36 4.32 4.27 4.23 4.18 4.14 4.09 4.05 4.01 3.97 3.93 3.89 3.85 3.81 3.77 3.73

Note: CC=116.7

Note: CC=111.6

124

HSS / Structural Steel Tubing

Allowable Stresses for Compression Members

Fy= 50 ksi minimum specified yield stress steel

Kl r 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Fa (ksi) 29.94 29.87 29.80 29.73 29.66 29.58 29.50 29.42 29.34 29.26 29.17 29.08 28.99 28.90 28.80 28.71 28.61 28.51 28.40 28.30 28.19 28.08 27.97 27.86 27.75 27.63 27.52 27.40 27.28 27.15 27.03 26.90 26.77 26.64 26.51 26.38 26.25 26.11 25.97 25.83 25.69 25.55 25.40 25.26 25.11 24.96 24.81 24.66 24.51 24.35 Kl r 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Fa (ksi) 24.19 24.04 23.88 23.72 23.55 23.39 23.22 23.06 22.89 22.72 22.55 22.37 22.20 22.02 21.85 21.67 21.49 21.31 21.12 20.94 20.75 20.56 20.38 20.19 19.99 19.80 19.61 19.41 19.21 19.01 18.81 18.61 18.41 18.20 17.99 17.79 17.58 17.37 17.15 16.94 16.72 16.50 16.29 16.06 15.84 15.62 15.39 15.17 14.94 14.71 Kl r 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 Fa (ksi) 14.47 14.24 14.00 13.77 13.53 13.29 13.04 12.80 12.57 12.34 12.12 11.90 11.69 11.49 11.29 11.10 10.91 10.72 10.55 10.37 10.20 10.03 9.87 9.71 9.56 9.41 9.26 9.11 8.97 8.84 8.70 8.57 8.44 8.32 8.19 8.07 7.96 7.84 7.73 7.62 7.51 7.41 7.30 7.20 7.10 7.01 6.91 6.82 6.73 6.64 Kl r 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 Fa (ksi) 6.55 6.46 6.38 6.30 6.22 6.14 6.06 5.98 5.91 5.83 5.76 5.69 5.62 5.55 5.49 5.42 5.35 5.29 5.23 5.17 5.11 5.05 4.99 4.93 4.88 4.82 4.77 4.71 4.66 4.61 4.56 4.51 4.46 4.41 4.36 4.32 4.27 4.23 4.18 4.14 4.09 4.05 4.01 3.97 3.39 3.89 3.85 3.81 3.77 3.73 Kl r 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Fa (ksi) 35.92 35.83 35.74 35.64 35.54 35.44 35.34 35.23 35.12 35.01 34.89 34.77 34.65 34.52 34.40 34.27 34.13 34.00 33.86 33.71 33.57 33.42 33.27 33.12 32.96 32.81 32.65 32.48 32.32 32.15 31.98 31.81 31.63 31.45 31.28 31.09 30.91 30.72 30.53 30.34 30.15 29.95 29.75 29.55 29.35 29.15 28.94 28.73 28.52 28.31

Fy= 60 ksi minimum specified yield stress steel

Kl r 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Fa (ksi) 28.09 27.87 27.66 27.43 27.21 26.98 26.76 26.53 26.29 26.06 25.82 25.58 25.34 25.10 24.86 24.61 24.36 24.11 23.86 23.60 23.34 23.08 22.82 22.56 22.29 22.02 21.75 21.48 21.21 20.93 20.65 20.37 20.09 19.80 19.51 19.22 18.93 18.63 18.34 18.04 17.73 17.43 17.12 16.81 16.50 16.19 15.87 15.55 15.24 14.93 Kl r 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 Fa (ksi) 14.64 14.35 14.08 13.81 13.54 13.29 13.04 12.80 12.57 12.34 12.12 11.90 11.69 11.49 11.29 11.10 10.91 10.72 10.55 10.37 10.20 10.03 9.87 9.71 9.56 9.41 9.26 9.11 8.97 8.84 8.70 8.57 8.44 8.32 8.19 8.07 7.96 7.84 7.73 7.62 7.51 7.41 7.30 7.20 7.10 7.01 6.91 6.82 6.73 6.64 Kl r 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 1 92 1 93 1 94 1 95 1 96 1 97 1 98 1 99 200 Fa (ksi) 6.55 6.46 6.38 6.30 6.22 6.14 6.06 5.98 5.91 5.83 5.76 5.69 5.62 5.55 5.49 5.42 5.35 5.29 5.23 5.17 5.11 5.05 4.99 4.93 4.88 4.82 4.77 4.71 4.66 4.61 4.56 4.51 4.46 4.41 4.36 4.32 4.27 4.23 4.18 4.14 4.09 4.05 4.01 3.97 3.93 3.89 3.85 3.81 3.77 3.73

Note: CC=107.0

Note: CC=97.7

125

HSS / Structural Steel Tubing

Allowable Stresses for Compression Members

Fy= 65 ksi minimum specified yield stress steel

Kl r 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 l9 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Fa (ksi) 38.90 38.81 38.70 38.59 38.48 38.37 38.25 38.13 38.00 37.87 37.74 37.61 37.47 37.32 37.18 37.03 36.87 36.72 36.56 36.40 36.23 36.06 35.89 35.71 35.54 35.36 35.17 34.99 34.80 34.60 34.41 34.21 34.01 33.81 33.60 33.39 33.18 32.96 32.75 32.53 32.30 32.08 31.85 31.62 31.39 31.35 30.92 30.68 30.43 30.19 Kl r 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Fa (ksi) 29.94 29.69 29.44 29.18 28.92 28.66 28.40 28.14 27.87 27.60 27.33 27.05 26.78 26.50 26.21 25.93 25.64 25.35 25.06 24.76 24.47 24.17 23.87 23.56 23.25 22.94 22.63 22.32 22.00 21.68 21.36 21.03 20.70 20.37 20.04 19.70 19.36 19.02 18.67 18.32 17.97 17.62 17.26 16.90 16.55 16.20 15.87 15.55 15.24 14.93 Kl r 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 Fa (ksi) 14.64 14.35 14.08 13.81 13.54 13.29 13.04 12.80 12.57 12.34 12.12 11.90 11.69 11.49 11.29 11.10 10.91 10.72 10.55 10.37 10.20 10.03 9.87 9.71 9.56 9.41 9.26 9.11 8.97 8.84 8.70 8.57 8.44 8.32 8.19 8.07 7.96 7.84 7.73 7.62 7.51 7.41 7.30 7.20 7.10 7.01 6.91 6.82 6.73 6.64 Kl r 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 Fa (ksi) 6.55 6.46 6.38 6.30 6.22 6.14 6.06 5.98 5.91 5.83 5.76 5.69 5.62 5.55 5.49 5.42 5.35 5.29 5.23 5.17 5.11 5.05 4.99 4.93 4.88 4.82 4.77 4.71 4.66 4.61 4.56 4.51 4.46 4.41 4.36 4.32 4.27 4.23 4.18 4.14 4.09 4.05 4.01 3.97 3.93 3.89 3.85 3.81 3.77 3.73 Kl r 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Fa (ksi) 41.89 41.78 41.67 41.55 41.42 41.29 41.16 41.02 40.88 40.73 40.58 40.43 40.27 40.11 39.95 39.78 39.60 39.43 39.25 39.06 38.87 38.68 38.49 38.29 38.09 37.88 37.67 37.46 37.25 37.03 36.80 36.58 36.35 36.12 35.89 35.65 35.41 35.16 34.92 34.67 34.41 34.16 33.90 33.64 33.37 33.10 32.83 32.56 32.28 32.00

Fy= 70 ksi minimum specified yield stress steel

Kl r 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Fa (ksi) 31.72 31.44 31.15 30.86 30.56 30.27 29.97 29.67 29.36 29.05 28.74 28.43 28.11 27.79 27.47 27.15 26.82 26.49 26.16 25.82 25.48 25.14 24.79 24.44 24.09 23.74 23.38 23.02 22.65 22.29 21.92 21.54 21.17 20.79 20.40 20.02 19.63 19.23 18.83 18.43 18.03 17.64 17.27 16.90 16.55 16.20 15.87 15.55 15.24 14.93 Kl r 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 Fa (ksi) 14.64 14.35 14.08 13.81 13.54 13.29 13.04 12.80 12.57 12.34 12.12 11.90 11.69 11.49 11.29 11.10 10.91 10.72 10.55 10.37 10.20 10.03 9.87 9.71 9.56 9.41 9.26 9.11 8.97 8.84 8.70 8.57 8.44 8.32 8.19 8.07 7.96 7.84 7.73 7.62 7.51 7.41 7.30 7.20 7.10 7.01 6.91 6.82 6.73 6.64 Kl r 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 1 92 1 93 1 94 1 95 1 96 1 97 1 98 1 99 200 Fa (ksi) 6.55 6.46 6.38 6.30 6.22 6.14 6.06 5.98 5.91 5.83 5.76 5.69 5.62 5.55 5.49 5.42 5.35 5.29 5.23 5.17 5.11 5.05 4.99 4.93 4.88 4.82 4.77 4.71 4.66 4.61 4.56 4.51 4.46 4.41 4.36 4.32 4.27 4.23 4.18 4.14 4.09 4.05 4.01 3.97 3.93 3.89 3.85 3.81 3.77 3.73

Note: CC=93.8

Note: CC=90.4

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