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This publication formerly was issued as Research Report 124-A, Form D410. It presents recommended methods for the design and fabrication of staple-glued all-plywood beams. Allowable stresses and other design criteria are given in Part 1, and in APA’s Plywood Design Specification (PDS). References are also made to the National Design Specification for Wood Construction (NDS), published by the American Forest & Paper 0Association. Part 2 of this publication covers beam fabrication. Beam design and fabrication recommendations are based on tests conducted by APA, as described in Research Report 124, All-Plywood Beams for Mobile Homes. The tests showed that such beams comply with the structural load test criteria in the Federal Manufactured Home Construction and Safety Standards. These standards and subsequent amendments are published in the Federal Register by the U.S. Department of Housing and Urban Development, and include procedures and criteria for conducting and evaluating structural load tests on assemblies such as all-plywood beams. This standard is refererence in the 2012 IBC.