Weathered Trestlewood II timbers can be graded (WLCB or WWPA) upon request. Timbers are graded with exception taken for any holes, notches, etc. Weathered Trestlewood II timbers are often somewhat more rustic / rougher in nature than standard resawn Trestlewood II timbers, which will impact how individual timbers will grade out. It is highly recommended that any Trestlewood II timbers that are to be used in a structural application be graded. It is also recommended that standard size Trestlewood II timbers be used whenever possible. Checking, holes (where metal has been removed) and wane tend to be more pronounced in Trestlewood II timbers wider and/or thicker than 10" than in standard size Trestlewood II timbers. A high moisture content should be assumed when consulting design value tables. See also: "Strength" section of Trestlewood II Features/Issues summary.