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American Wood Council
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Permanent Wood Foundation Design Specification

American Wood Council (AWC) does not provide engineering consulting services. However, AWC has a Design Professional Member database that is searchable by area of expertise and geographic location. To locate the consultant nearest you,click here.

2007 PWF Standard

2007 PWF Standard ANSI / AF&PA PWF-2007 - Permanent Wood Foundation Design Specification. A Permanent Wood Foundation (PWF) system is intended for light frame construction including residential buildings. This document primarily addresses the structural design requirements.
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The Permanent Wood Foundation is a load-bearing wood-frame wall and floor system designed for both above and below-grade use as a foundation for light frame construction. The PWF specifications are based on information developed cooperatively by the wood products industry and the U.S. Forest Service, with the advice and guidance of the Department of Housing and Urban Development's Federal Housing Administration and utilizing research findings of the National Association of Home Builders Research Center.

The PWF Standard replaces Technical Report 7 (TR7) - Permanent Wood Foundation System Basic Requirements. The 2007 PWF Standard has been adopted for reference in the 2009/2012 International Residential Code and 2009/2012 International Building Code.

Technical Questions

To submit a technical question regarding AWC design standards, e-mail: See contact info for other options.

Frequently Asked Questions

What publications do you have on Permanent Wood Foundations?