APA PRR 410 PDF

An engineered wood rim board is a rectangular-shaped product manufactured from either structural-use panels sawn into rim board dimensions, re-sawn structural glued laminated timber, or structural composite lumber manufactured specifically to meet the performance requirements of rim boards in wood frame construction. 

An engineered wood rim board shall have been qualified as meeting one or more of the referenced product standards listed in Section 2. Proprietary wood rim board products are outside the scope of this standard and shall be permitted to be qualified in accordance with ASTM D7672. 

Unless otherwise specified, the term "engineered wood rim boards" referenced in this standard represents the rim board products defined in Sections 1.1 through 1.2 and qualified under this standard. 1.4 This standard provides dimensions and tolerances, performance requirements, test methods, quality assurance, and trademarking for engineered wood rim boards. The use of engineered rim boards in bending applications is beyond the scope of this standard. 

Engineered wood rim boards shall be used in dry service conditions where the mean equilibrium moisture content of solid-sawn lumber is less than 16%. 

Products carrying an engineered wood rim board trademark are to be used in accordance with the installation requirements prescribed in the code or code report, and the recommendations published by the rim board manufacturer, or its qualified agency or trade association. 

The annex and discussion contained in this standard are mandatory, and notes and appendix are non-mandatory. This standard incorporates the U.S. customary units as well as the International System of Units (SI). The values given in the U.S. customary units are the standard and the SI values given in parentheses are for information only.