Structural Beam Calculator

Beam Span

Span Length (ft)

Tributary Loading

Enter the tributary width for each load type. Total load will be calculated automatically.

Roof Load 30 PSF

Tributary Width (ft)

Load: 0 lb/ft

Floor Load 40 PSF

Tributary Width (ft)

Load: 480 lb/ft

Ceiling Dead Load 10 PSF

Tributary Width (ft)

Load: 120 lb/ft

Attic Storage 25 PSF

Tributary Width (ft)

Load: 0 lb/ft

Wall Above 100 PLF

Wall Length (ft)

Load: 0 lb/ft

Total Uniform Load: 600 lb/ft

Point Loading

Add concentrated loads at specific locations along the beam span.

Load at Midspan Concentrated Load

Load (lbs)

Load at Distance from Bearing Concentrated Load

Load (lbs)

Distance from Left Bearing (ft)

Additional Moment: 0 ft-lbs

Additional Shear: 0 lbs

Material Type

Design Parameters

Deflection Limit

Calculation Results

Load Summary

Total Load: -

Design Moment: -

Design Shear: -

Dimensional Lumber Sizing

Size Plys Needed Status Checks (B/S/D)

LVL Depth Plys Needed Status Checks (B/S/D)

Required Section Modulus: -

Required Moment of Inertia: -

Minimum Steel Grade: A572 Grade 50

Note: Select a steel beam with section modulus ≥ - in³ and moment of inertia ≥ - in⁴

Deflection Analysis

Limit Allowable Actual (Recommended) Status

Beam Span

Tributary Loading

Point Loading

Material Type

Design Parameters

Calculation Results

Load Summary

Dimensional Lumber Sizing

Deflection Analysis

LVL Bearing Length Requirements

Recommendations