The document defines and provides acceptance criteria for various types of defects that may occur in wood members, including checks and splits, cross grain, decay, sound and unsound knots, wane, and warp. Checks and splits up to half the depth, width, or thickness of the member are permitted, as are checks that do not extend through the full thickness. Cross grain cannot deviate more than 25 mm in 100 mm of length. Any visible decay is not permitted. Knots cannot exceed 7/8 or 2/3 of the cross-sectional area affected for sound and unsound knots, respectively. Wane is permitted if not on outer edges or exposed sides. Warp is limited to no more than 2 mm of