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AWPA M22-13
- Standard for Third-Party Agency Evaluation of Inspection Data
- standard by American Wood Protection Association, 2013
- Publisher: AWPA
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This Standard provides a method for third-party agencies to evaluate inspection data based on averagepercent core failures for penetration data and a 95% confidence interval of the mean for retention data. It is applicable to preservative pressure treated sawn lumber, sawn timbers, and engineered wood products. It provides requirements for increased inspection, warning and disqualification when conformance fails to meet specified levels.