Long-Term Durability of Pressure-Treated Wood in a Severe ...

CCA-A, CCA-B, or CCA-C to retentions above 7 0kg/m 3(0.43lb/ft ) have had no failures after 60, 61, and 40 years, respectively. As a whole, the post and lumber specimens indicate an expected durability of over 50 years for creosote-treated wood and over 60 years for wood treated with pentachlorophenol, copper naph-thenate, ACZA, or CCA. ................
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