APA trademark. The final mark on the APA rating is the thickness of the plywood. Plywood may have an even number of plies, but it always has an odd number of layers, each layer consisting of one or more plies, or veneers. Span Rating on APA Plywood Panels. APA’s PS1-95 is an important standard for Construction and Industrial Plywood . APA Rated Sheathing, 40/20 Span Rating, 19/32 inch, 4x8. According to US Plywood Standard (APA PS1-95 Construction and Industrial Plywood), plywood can be classified into several grades, such as A-A, A-B, A-C, B-B, B-C, C-C , C-D . This rating doesn’t mean it has to be used outside. THING ACING EXPOSURE 1 32/16 15/32 INCH PS 1-07 C-D PRP-108 000 WOOD ASSOCIA THE ENGINEERED TION APA Percent of Percent of Material Production Energy Use Wood 47 4 Steel 23 48 Aluminum 2 8 ©2007 Plywood may have an even number of plies, but it always has an odd number of layers, each layer consisting of one or more plies, or veneers. Thickness. APA Rated® Sheathing An APA Performance Rated Panel designed and manufactured specifically for residential and other light frame wall sheathing, roof sheathing and subfloor-ing applications. Brows our selection of plywood and lumber at the Plywood C Plywood Rated Sturd-I-Floor is underlayment with a span rating. For touch-sanded grades such as C-D Plugged, C-C Plugged, UNDERLAYMENT and APA RATED STURD-I-FLOOR (marked PS 1), see Table 2. APA Underlayment is always plywood. PS 1-09 – APA’s Technical Guide, with APA Typical Trademarks. APA PERFORMANCE RATED PANEL COMPOSITIONS Plywood Plywood is the original wood structural panel. Table 3 applies to sanded grades such as A-D and B-D. The values given in Tables 1 and 2 represent the maximum allowable loads for plywood or OSB. h. For other specialty flooring products, including marble and slate, please refer to the finish floor through 2c apply to APA Rated OSB Sheathing, APA Rated OSB Structural I Sheathing, and APA Rated OSB Sturd-I-Floor respectively. APA-The Engineered Wood Association is a nonprofit trade association focusing on helping the industry create structural wood products of exceptional strength, versatility and reliability . aPa Performance rated PaneL comPoSitionS Plywood Plywood is the original wood structural panel. For sanded plywood panels, see Table 3. The grade refers to the grade of surface covering. Plywood with an Exterior rating is suitable for outside use with repeated water exposure. The further the supports are spaced, the thicker the panel needs to be. Table 1 applies to unsanded plywood and is based on APA RATED SHEATH-ING (marked PS 1) grade. It is composed of thin sheets of veneer, or plies, arranged in layers to form a panel. The first letter refers to the grade of face veneers and the second letter refers to the grade of back veneers . Only products bearing the APA trademark are subject to the Association’s quality auditing program. g. fFor rough floors, specify minimum Performance Category 11/32 APA Underlayment . The Exterior rating makes it a great option for use in bathrooms and kitchens, as well. The standard details various grades of structural plywood such as sheathing for roofs, walls and floors, sanded grades and plywood used in concrete formwork. A structural wood panel composed of a D-grade or better face, back and inner plies cross-banded for strength. Span Rating denotes the maximum recommended centre to centre spacing of supports in inches over which the panel should be placed with its strength axis across two or more supports. It is composed of thin sheets of veneer, or plies, arranged in layers to form a panel. f. Plywood APA Rated Sturd-I-Floor with sanded face. Veneer in a finished US trademarked plywood panel must conform to one of the six grades listed in the US PS 1-09 standard: N, the highest classification (rarely produced), followed by A, B, C-plugged, C and D. Non-overlaid APA plywood panels come in three levels of … APA has a technical guide to PS 1-09 structural plywood.