3-1/8 in x 15-1/8 in Glulam Beam — 26 ft is a glued-laminated structural wood beam listed by Johnston at approximately 3-1/8 in × 15-1/8 in and 26 ft long.

Glulam selection is engineering-sensitive. Match the exact beam dimensions, stress class/combination, species/layup, camber and appearance classification shown on the beam stamp or project documents. Do not use a generic family image or catalog title to infer allowable loads; final sizing, connections and bearing requirements must follow the engineered design.

Documents & Resources

• Doug Ashy Buying Guide: Doug Ashy Engineered Lumber Buying Guide
• Industry Standard: APA — The Engineered Wood Association: panel and engineered wood standards