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To qualify for a given Span Rating under the standards, a panel must meet all of the criteria for that rating. As a result, mechanical properties that are characteristic of APA structural-use panels are actually greater than the minimum necessary to pass one criterion.
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,
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).
Just select your application (whether walls, roofs, flooring concrete formwork or even non-structural uses) and we’ll tell you which grades will be suitable and the range of other features like thickness and span rating, With more than a dozen common thicknesses and over 20 different grades, it’s easy to specify the right panel for the job.
APA Rated Sheathing is a structural panel for subfloor, wall, roof, and shear wall applications. It has different span ratings and bond classifications depending on the performance category and exposure.
The standard classifies panels by bond classification, span rating, performance category, and grade. It provides test methods, a glossary of trade terms and definitions, and a quality certification program whereby agencies inspect, sample, and test products for conformance to this standard.
Learn how to use the Span Ratings of APA RATED SHEATHING, STURD-I-FLOOR and SIDING panels for roofing, subflooring and siding applications. See the typical panel thickness and spacing recommendations for each Span Rating.
