Performance Rated I-Joists Design and Construction Guide

APA Performance Rated I-Joists (PRI^®) provide a high-performance alternative to dimension lumber joists for residential flooring applications. They are simple to specify and easy to install.

This publication is designed for: builders, designers

This APA construction guide explains the product selection, specification and installation steps for APA PRIs. While the guide emphasizes residential floor systems, much of the information is also applicable to other construction practices.

Key sections include:

• Sample trademark

• Selecting APA Performance Rated I-Joists

  • Product description

  • Residential floor allowable spans

• Fire-rated design considerations

• Typical floor framing and construction details

• I-joist web stiffeners

  • Recommendations for I-joists designed in accordance with APA standard PRI-400

  • Cantilever details for balconies

  • Cantilever details for vertical building offset

  • Lateral load transfer at short cantilevers

  • Cantilever detail without blocking

• Web hole specifications

  • Rules for cutting holes in PRI joists

• Rim board hole specifications

Published by APA — The Engineered Wood Association.