2008 APA Publications Index Now Available

The APA Publications Index, Form B300 NN, has been updated. The revised 2008 index provides a complete listing of APA design and construction guides, product guides, builder tips, case histories, industrial publications and other materials available from the Association.

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Register Today for Upcoming APA Webinar

APA WebinarJoin APA's knowledgeable engineered wood specialists for an informative webinar, Design Low-Rise Structures and K-12 with Wood, October 25 at 2 p.m. EDT.

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New Engineered Wood Construction Guide

Engineered Wood Construction GuideAPA just issued the 2007 Engineered Wood Construction Guide, the major reference manual for using engineered wood products in residential and commercial construction.

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Help Desk Question: Installing Glulam

APA Help DeskQuestion: It is my understanding that glulam beams have a definite top and bottom, based on the camber which is marked, but that laminated veneer lumber (LVL) can be installed either way, regardless of the orientation of the lettering, because LVL has no camber.

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Determining True and Apparent Modulus of Elasticity

The bending stiffness of a structural member is the capacity to resist deflection and is represented in equations as EI. The E is the modulus of elasticity of the material making up the structural member and the I is the moment of inertia of the cross section of the structural member.

When determining true (Shear-Free) and apparent modulus of elasticity, what are the differences in the test methods used? And what do the results mean to an engineer?

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Help Desk Question: What are the Risks Involved with Mixing Solid Sawn Lumber and Engineered Wood?

Help DeskEvery application where solid sawn lumber is used in conjunction with engineered wood must be looked at very carefully with respect to the material’s moisture content at the time of construction. The safest alternative is to not mix engineered wood with solid sawn lumber in any situation where load sharing might be an issue.

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Disclaimer: The information contained on this site is based on APA - The Engineered Wood Association's continuing programs of laboratory testing, product research and comprehensive field experience. Neither APA, nor its members, make any warranty, expressed or implied, or assume any legal liability for the use, application of, and/or reference to opinions, findings, conclusions or recommendations included on this site. Consult your local jurisdiction or design professional to assure compliance with code, construction and performance requirements. Because APA has no control over quality of workmanship or the conditions under which engineered wood products are used, it cannot accept responsibility for product performance or designs as actually constructed. © 2010 APA - The Engineered Wood Association - All Rights Reserved.