APA E720 CANADA
PRI-400 Performance Standard for APA EWS I-Joists (Limit States Design)
|Publication Date:||1 November 2013|
The APA EWS Performance-Rated I-joist is an "I"-shaped prefabricated structural member using solid-sawn lumber or structural composite lumber flanges and structural-use panel webs bonded together with exterior adhesives.
To be classified as an APA EWS Performance-Rated I-joist, the joist shall meet an L/480 live load deflection criterion and the intent of the floor vibration provisions specified in the National Building Code of Canada for residential floor applications, in addition to meeting all other requirements of this standard.
APA EWS Performance-Rated I-joists are intended for use as joists in residential floor construction. Products carrying the APA EWS Performance-Rated I-joist trademark are to be installed in accordance with recommendations published by APA - The Engineered Wood Association.
APA EWS Performance-Rated I-joists can be used for applications other than residential floor construction provided that appropriate design properties of the I-joists are used in design.
APA EWS Performance-Rated I-joists are intended for use in dry-service conditions where the average equilibrium moisture content of solid-sawn lumber is less than 16%.
This standard provides a span system for a series of APA EWS Performance-Rated I-joists used in residential floor construction. To qualify for trademarking as an APA EWS Performance-Rated I-joist, the I-joist shall demonstrate conformance to the performance requirements for the published span as well as the design properties set forth in this standard.