Q5.4: Can wall members be non rectangular if they meet minimum vertical height requirements? Can there be perforations in the wall member given that the total wall member vertical height is at least 1in but the spacing between the perforations is less than 1in?

Answer: Wall members can be non-rectangular if the longest vertical distance that can be measured on the wall member is at least 1 inch. Any perforations are allowed in the wall member as long as the total vertical height is at least 1 inch and the total horizontal length is at least 1 inch.  The spacing between the perforations is permitted to be less than 1 inch.