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The following load-span tables apply to sanded, touch-sanded, and unsanded plywood manufactured in accordance with Voluntary Product Standard PS 1-95, with face grain parallel to sup-ports, and face grain across supports. For each combination of span and thickness (or Span Rating), loads are given for deflections of L/360, L/240 and L/180,
The following load-span tables apply to APA trademarked structural-use panels qualified and manufactured in accordance with APA PRP-108, Performance Standards and Qualification Policy for Structural-Use Panels, Form E445, Voluntary Product
APA Rated Sheathing panels are produced as plywood or oriented strand board (OSB). Typical size is 4 ft x 8 ft, but other sizes may also be produced. Commonly square edge, but may be produced with tongue and groove edges. 2.4 Common Performance Categories And Corresponding Span Ratings Performance Category Span Rating 3/8 24/0 7/16 24/16
There are three possible span conditions to consider when computing the uniform load capacities of structural-use panels depending on the size and orientation of the panel and the spacing of the framing support members. These include single-span, two-span and three-span (see below).
APA Rated Sheathing panels are assessed for performance as sheathing in roofs, subfloors and walls. Panels are assigned a Span Rating, which is primarily a mea- sure of panel stiffness and strength paral- lel to the major panel strength axis (usually the long dimension).
grades of structural plywood and provide a basis for common understanding among producers, distributors, and users of the product. This standard covers the wood species, veneer grading, adhesive bonds, panel construction and workmanship, dimensions and tolerances, marking, moisture content and packaging of structural plywood intended
recommendations for several of the most common engineered wood products – plywood, oriented strand board, glulam, and I-joists. Other engineered wood products that are often used in the construction systems described in this guide include Rim Board ® and structural composite lumber (SCL).
