WDMA T.M. 15-11, Test Method for Determining the Vertical Edge Impact Resistance of Backing for Veneered Wood Door Stiles determines the ability of a backer material for veneered wood door stiles to resist impact along its vertical corner edge. This is a small-scale test, using a falling weight to impart an impact load to the edge of a sample. The depth of the depression created by the impact is constitutes the pass/fail criteria.
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