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Describes techniques and products for code-required connections in wood roof systems in high wind and seismic zones. Revised February 2004.
Design loads for lag screws and bolts connecting ridge beam halves. This publication is available in PDF format only. Revised November 1987.
Discusses the code requirement for connecting side-by-side glulam beams (sistered) to each other. Explains the reasoning behind this building code requirement and gives guidelines on the proper way to make the connections. Revised July 30, 2015.
THIS PUBLICATION HAS BEEN DISCONTINUED. Please refer to Form Y250 and Form Z725 for more information on this topic.
Describes how to prevent floor complaints and callbacks with proper floor sheathing installation. View on mobile devices at www.apawood.org/buildertips. Updated July 2016.
Proper connection details are important to the structural performance and serviceability of timber-framed structures.This illustrated guide shows correct connections as well as common connection errors involving glued laminated timbers. Revised July 2016.
Laboratory Report 87: Testing of commercially available deformed shank nails for attaching built-up roof felts to 3/8" and 1/2" plywood. 1961.
Outlines bases for fastener recommendations in plywood siding and foundations, and fire-retardant-treated plywood. This publication is available in PDF format only. Revised December 2004.
Summarizes APA test data on bolted plywood joints. This publication is available in PDF format only. Revised November 1997.
Summarizes APA test data on screwed plywood joints. Revised June 2011.