Performance Standard: Beams and posts, especially those 31/2 inches or greater in thickness (which normally are not kiln dried) will sometimes twist or bow as they dry subsequent to construction. Twisting or bowing are usually not a structural concern if posts and beams have been sized according to National Forest Products Association span tables.4 Bows and twists exceeding 3/4 inch in 8 feet are unacceptable.
Corrective Measure: The remodeler will repair or replace any beam or post with a defect exceeding the standard.