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AMERICAN WOOD-PRESERVERS' ASSOCIATION STANDARD

(This Standard was promulgated pursuant to a consensus procedure)

T1-06©

Use Category System: Processing and Treatment Standard

8.3 CROSSTIES AND SWITCHTIES

(AWPA Subcommittee T-3)

UPDATE: Section 8.3 of Standard T1 is revised as follows:

8.3.5 Retention Testing. The net retention in any charge shall not be less than 90 percent of the retention specified, but the retention of 5 consecutive charges shall be at least 100 percent. When a contract comprises less than 5 charges, the net retention in any charge shall not be less than 95 percent of that specified. The retention of preservative solution retained shall be calculated after correcting the volume of preservative to 40°C (100°F) for creosote using factors in AWPA Standard F1 and to 16°C (60°F) for pentachlorophenol or copper naphthenate, using factors in AWPA Standard F2. Alternatively, copper naphthenate may be determined by assay.

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