Lumber Size Categories

This blog is the second in a series of articles intended to provide information about softwood lumber, including grade-marking, design properties, testing, and continued monitoring of the lumber resource. American Softwood Lumber Standard There are several ways to classify lumber which are spelled out in the American Softwood Lumber Standard – Voluntary Product Standard PS […]

Continue reading

Warp in Dimension Lumber

What is Warp? Warp is defined as any deviation from a true or plane surface, including bow, crook, cup, twist, or any combination thereof. Warp restrictions are based on the average form of warp as it occurs normally, and any variation from this average form, such as short kinks, shall be appraised according to its […]

Continue reading