APA PRI-405 Performance Standard for Commercial I-Joists

The APA Performance Rated I-joist is an “I”-shaped prefabricated structural member using sawn or structural composite lumber flanges and wood structural panel webs bonded together with moisture-resistant adhesives. This standard provides design properties for APA Performance Rated I-joists in sizes that are commonly used in non-residential floor and roof construction.

This publication is designed for: engineered wood manufacturers, building code officials

This APA standard provides performance criteria, qualification requirements and quality assurance information for APA Performance Rated I-joists used in non-residential floor and roof construction.

Key sections include:

• Performance criteria and requirements

  • Components, sizes and tolerances

  • Design properties

  • Characteristic test values

• Qualification requirements

  • Flange materials

  • Web materials

  • Adhesives

  • I-joist products

• Quality assurance

  • Qualification tests

  • Product evaluation

  • Quality assurance

  • Trademarking

• Typical trademark examples

Published by APA — The Engineered Wood Association.