Read omega info sheet - text version

Installation Instructions & Technical Information

Phillips Universal Retaining Wall Corner Unit

Dimensions: 8" H x 18" W x 9" D Face Area: 1.0 ft² / 0.5 ft² Weight: 86.0 lbs

Omega Retaining Wall Straight Face Unit

Dimensions: 8" H x 18" W x 12" D Face Area: 1.0 ft² Weight: 78.26 lbs

Omega Retaining Wall Beveled Face Unit

Dimensions: 8" H x 18" W x 12" D Face Area: ~1.0 ft² Weight: 74.18 lbs

Phillips Universal Retaining Wall Cap Unit

Dimensions: 3" H x 18" W x 12" D Face Area: 0.375 ft² Weight: 49.0 lbs

Installation Instructions & Technical Information


Omega Unit

Drainage Pipe

Omega Retaining Wall should be placed on a properly prepared base of compactible crushed stone. Do not use Pea Gravel. Dig a trench 24" wide and deep enough to allow for 6" of base material plus, an additional 1" for

Clean Crushed Stone Fill

every 6" of wall to be exposed above grade. For acceptable results, base must be properly leveled and compacted. Drainage pipe should be placed at rear base of first course.

6" Min.

Compactible Crushed Stone Base

24" Min.



Place first unit at the lowest level of elevation. Each unit must be leveled

Mason's Line

from side to side as well as front to back. Blocks must be installed with the tabs facing up. To aid in keeping the wall straight, place a mason's line along the back side. Backfill each course and fill block voids with clean crushed stone. Sweep tops of units before installing next course.

Compactible Crushed Stone Base


Add additional rows of Omega Block by placing the center of the units over

Clean Crushed Stone Fill 12" Min.

the intersection of two units from the previous row, making sure to pull the block forward so that the back of the block stops against the tabs of the two units below. This will create the system's native 1" setback. Fill block voids and backfill a minimum of 12" behind wall with clean crushed stone to allow proper drainage flow, preventing any possible structural or drainage problems.


Universal Retaining Wall Cap Chisel


Once all courses of Omega block are installed to your satisfaction, complete the installation by placing Universal Retaining Wall Caps over the top course of Omega block. When placing caps, knock tabs off of top Omega course and secure caps with a suitable concrete or retaining wall adhesive. Caps may be installed flush to block, with an overhang, or set back to match the set back of the Omega block.




Universal Cap Universal Corner

The Phillips Universal Retaining Wall Corner can be used to create both right and left hand corners for the Omega Retaining Wall System by simply flipping it in the appropriate direction. The corner block may be taylored to many different applications by splitting it at any of the designated points.

Universal Corner Universal Cap


Page 1

Installation Instructions & Technical Information

Outside Corners

Row #1 Row #2 Row #1 Row #2

Corner Installation

Omega Block

Universal Corner

Inside Corners

Omega Block

Row #1

Row #2

Row #1 Row #2

Convex Curve

Row #1

Row #2

Concave Curve

Row #1

Row #2 Row #1 Row #2

Page 2

Curve Installation

Row #1 Row #2


omega info sheet -

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