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AWPA U1-13
- Use Category System: User Specification for Treated Wood
- standard by American Wood Protection Association, 2013
- Publisher: AWPA
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The Use Category System (UCS) of the American Wood Protection Association (AWPA) designates what preservative systems and retentions have been determined to be effective in protecting wood products under specified exposure conditions. The strength of the UCS and its focus is that all wood uses can be placed into one of five major use Categories that clearly describe the exposure conditions that specific wood products can be subjected to in service.
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