Span Calculator
Calculate beam spans, load capacities, and structural requirements for construction projects. Determine appropriate beam sizes and materials for your building needs.
Step 1: Beam Specifications
Understanding Beam Spans
Beam span calculations depend on material strength, load requirements, and beam dimensions. Wood beams typically span 10-20 feet, steel beams 20-40 feet, while engineered wood products can span up to 60 feet.
Step 2: Load & Support
About Load Calculations
Load calculations include both live loads (people, furniture, snow) and dead loads (structure weight). Building codes typically require floor loads of 40 psf for residential and 50-100 psf for commercial buildings.
Span Calculation Results
Maximum Recommended Span
Beam Span Comparison
| Beam Type | Dimensions | Max Span | Load Capacity | Relative Cost |
|---|
Load Analysis Breakdown
Span Calculation Formula
Max Span = √(8 × Material Strength × Moment of Inertia) / (Load × Safety Factor)
The maximum span is calculated based on material properties, beam dimensions, and applied loads. Actual spans may vary based on local building codes, material quality, and specific design requirements. Always consult a structural engineer for critical applications.
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