Wwpa quality services western wood products association is the leader in the west in lumber grade rules writing, lumber grading and. The beams are available in standard widths ranging from 3 inches to 14 1 4 inches, with beam depth limited only by transportation and pressuretreating. We are pleased to provide free pdf sections of the nlga standard grading rules for canadian lumber 2017 edition for your personal reference. Western lumber resource library western wood products. Alsc, which operates under the jurisdiction of the u. Erik wilson, wwpa american lumber standards committee, inc. Lumber used for structural framing of buildings in north america is generally derived. Western wood products association supported by western lumber manufacturers, wwpa delivers lumber grading, quality control, technical, business information and product support services to sawmills as well as those who use western softwood lumber products throughout the world. Membership appointment by secretary of commerce every 5 years. Western wood products association 1500 sw first ave. Douglas fir pseudotsuga menziesii softwood export council. Western wood products association wwpa provides lumber grading, technical support and business information services for the western lumber products of its member companies.
Establish and maintain suitable standards by which any system of inspecting, grading and marking lumber might be judged impartial and unbiased. Nominal size b xd standard dressed size s4s b xd xx in. Wwpa volume 3 species book 12 for color photographs of these grades. Wwpa grading rules for douglas fir, engelmannspruce, hemlocktrue firs, idaho white pine, incense cedar,lodgepole pine, ponderosa pine, sugar pine, western larch andwestern red cedar. Learn vocabulary, terms, and more with flashcards, games, and other study tools. However, because douglas fir has the ability to season well in position, framing products. Dimensional lumber western wood products association. Coast df 73% inland df l 26% south dfs 1 % grading agencies softwood export council sec. Western lumber structural grades wwpa western lumber grading rules product grades section reference usesend uses western lumber dimension grades structural light select structural 42. Western lumber structural grades wwpa western lumber grading.
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