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Est. 1979 | Also: Colville · Kettle Falls | ★ Military & First Responder Discount | Leave a Review
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Glulam Beam Calculator

Builders Supply · Project Calculators

Glulam Beam Calculator

Pick what you're building, tell us the span and what's bearing on it, and we'll show the Boise Glulam sizes that carry it — straight from the manufacturer's engineered load tables.

For reference & budgeting only — not an engineered design.
Final sizes must be confirmed by a licensed engineer before you build or pull a permit. Builders Supply can get your design stamped and supply the material — just ask.

Sizing based on Boise Cascade® published BOISE GLULAM® 24F-V4 load tables. Builders Supply is a stocking dealer.

Your ridge beam

Carries the roof load down from both sides of the peak.

ft
The ridge carries half of this.
psf
ft
Support to support (center to center).
Load on the beam:

Need it engineered or stamped?

Point loads, cantilevers, wind/seismic, stacked or unusual loads, or a permit job — Builders Supply will get it sealed by a licensed engineer and supply the beam. One stop.

Request a stamp

Sizes are read from Boise Cascade's published BOISE GLULAM® 24F-V4 load tables (GLM-5000) for uniformly loaded beams, dry-use, with lateral support at bearings and along the compression edge. Tables exclude wind, point loads, and cantilevers. Span is center-to-center of supports; bearing assumes full beam-width support. Tributary estimates assume standard symmetric framing — confirm your actual load path. This is a material-selection guide; confirm final design against your building code, or with a licensed engineer for permitted work.

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