According to the Parallam® Plus PSL Specifiers Guide, Parallam® Plus PSL that is intended for beam and header applications is treated with copper azole at a retention level that eliminates the need to use stainless steel connectors and fasteners in most applications. However, the preservative retention level used for beam products is different than the level used for columns and is not suitable for heavy-duty, structural, ground-contact applications. If the product is being used in SL1 or SL2 (or even AWPA UC4A) applications (see graphic below), the preservative treatment is suitable and the beam may be used as a column. For more information on selecting the correct connector for Parallam Plus applications, check out our blog here.
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