Lvl Beam Span Calculator
Calculate the maximum span of an LVL beam based on load, beam dimensions, and wood species grade.
Published by:
isCalculator Editorial Team
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How to Use the LVL Beam Span Calculator
This calculator estimates the maximum span (in feet) for a laminated veneer lumber (LVL) beam under a uniform load. It uses imperial units (inches and psf).
- Enter Beam Width (in) – Typical values: 3.5″ (2×4) to 11.875″ (LVL). Must be between 1.5″ and 12″.
- Enter Beam Depth (in) – Typical range: 5.5″ to 24″. Must be between 3.5″ and 24″.
- Enter Total Load (psf) – Dead + Live load. Typical: 40–50 psf. Must be between 10 and 200 psf.
- Select LVL Grade – Choose the bending stress (Fb) rating: Standard (2400 psi), Premium (2600 psi), or Ultra (2800 psi).
- Click “Calculate Span” – The result shows the maximum span in feet. The formula used is displayed below the result.
Note: This calculator assumes a simply supported beam with uniform load and includes a safety factor. Always verify with local building codes and engineering review.
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Frequently Asked Questions
LVL (Laminated Veneer Lumber) is a engineered wood product made of multiple layers of thin wood veneers bonded together with adhesives. It is stronger and more stable than traditional lumber.
The span is estimated using the formula: span = sqrt( (Fb * b * d^2) / (9 * w) ), where Fb is the allowable bending stress, b is beam width, d is depth, and w is total load per square foot. This assumes a simply supported beam with uniform load.
Total load includes dead load (weight of structure) and live load (occupancy, snow, etc.). Typical residential loads range from 40 to 50 psf. Consult local building codes for exact requirements.