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Glulam Floor Beams

Glulam floor beams offer a strong, cost-effective, and versatile alternative to steel and solid-sawn lumber in residential construction. Unlike conventional materials, glulam delivers superior strength-to-weight performance while minimizing shrinkage, warping, nail popping, and floor squeaks.

This publication is designed for: builders, designers, engineers

The publication provides practical sizing tables and framing details for selecting the right glulam beam for a wide range of spans, tributary widths, and loading conditions. It covers both standard and I-joist-compatible (IJC) beam sizes across two stress classifications (24F-1.8E and the high-strength hybrid 30F-2.1E) and includes guidance for substituting glulam beams for steel floor beams. Installation details for both concealed and exposed applications are also provided.

Key sections include:

  • Glulam floor beam sizes for simple- and multiple-span applications

  • I-joist compatible (IJC) floor beam sizes

  • Hybrid glulam beams and new design options

  • Glulam equivalents to steel floor beams

  • 10 reasons to use glulam instead of steel beams

  • Concealed and exposed framing details and installation figures

Published by APA — The Engineered Wood Association.