USE CATEGORY SYSTEM USER SPECIFICATION FOR …

U1-21 AMERICAN WOOD PROTEC TION ASSOCIATION STANDARD. 2021 All Rights Reserved U. USE CATEGORY SYSTEM : user SPECIFICATION FOR TREATED WOOD. Adopted: 1999. U1. Revised: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. This Standard was developed by AWPA's Technical Committees in an open, consensus-based process. Any modifications, deviations, or exceptions to this Standard invalidate any references to this Standard and nullifies any statements of compliance with this Standard. IMPORTANT: Various Federal, State, and Local regulations may govern the use of products or processes standardized by AWPA. The existence of an AWPA Standard for a product or process does not imply that it is lawfully permitted for use in all potential applications.

Wood and wood based materials used for interior construction that are not in contact with ground, but may be subject to dampness. These products are continuously protected from the weather but may be exposed to occasional sources of moisture. Examples are interior beams, timbers, flooring, framing, millwork and sill plates.

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  User, System, Category, Woods, Flooring, Use category system user

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