APA - The Engineered Wood Association, the Composite Panel Association (CPA) and the Hardwood Plywood and Veneer Association (HPVA) will present How to Use and Specify Structural Panels, Composites and Veneers at the 2008 International Woodworking Machinery and Furniture Supply Fair (IWF) in Atlanta on August 20, 2008.
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.
APA just issued the 2007 Engineered Wood Construction Guide, the major reference manual for using engineered wood products in residential and commercial construction.
California's Air Resources Board (CARB), a division of the California EPA, is working to enact new regulations to reduce formaldehyde emissions from wood panels and products made from wood panels used in the state.
We recently read a very informative article on bowstring trusses that was published in the February issue of Structural Engineers Association of Washington (SEAW) Seattle Chapter Newsletter – "Equilibrium."
The article was written by Paul Gilham, P.E., and Terry McKee, P.E., both from Western Wood Structures. The authors discuss the performance of timber bowstring trusses, which have been used for many years in commercial and industrial applications. A significant issue related to these trusses is that several factors have led to the trusses being overstressed by today’s code requirements.
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?
Question: What is required in specifying preservative-treated glulam beams?
Answer: While glulam does not require preservative treatment in most cases, in certain conditions, for example, where the glulam may be subject to high humidity or moisture content, preservative-treated glulam is required.
To determine the correct preservative treatment of glulam for a specific use, below is a simple list of steps to follow.
