Design/Construction Guide Concrete Formingfor design and for strong lasting construction NOTICE The recommendations in this guide apply only to panels that bear the APA trademark Only panels bearing the APA trademark are subject to the Association s quality auditing program RATED SHEATHING SIZED FOR SPACING EXPOSURE 1 32/16 15/32 INCH PS 1 95 C D PRP 108 000 WOOD ASSOCIATION THE ENGINEERED A WOOD The