Structural Calculator
PROCalculate beam sizes, joist spacing, and footing dimensions. Input span, load, and wood species for structural sizing based on NDS standards.
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Beam Load Calculator
6 wood species (SPF, Doug Fir, SYP, Hem-Fir, LVL). Enter span, load, and plies to get recommended beam size with moment and deflection checks.
Joist Spacing
2x6 through 2x12 sizing with 12", 16", and 24" O.C. spacing checks. Live load and dead load inputs with deflection verification.
Foundation Footings
Square pad and continuous strip footings. 5 soil types from soft clay to hard rock. Concrete volume and safety factor calculations.
"I used to call my engineer for every beam size question. Now I can do preliminary sizing myself and only call him for the final stamp. Saves me at least $200 per project in consult fees."
Steve T.
Custom Home Builder, Nashville TN
Free vs PRO
See what you unlock with Construction PRO
| Feature | Free | PRO |
|---|---|---|
| Basic load calculator | ✓ | ✓ |
| Beam sizing (6 wood species) | ✗ | ✓ |
| Multi-ply beam support (2, 3, 4 ply) | ✗ | ✓ |
| Joist spacing calculator (2x6 - 2x12) | ✗ | ✓ |
| Footing calculator (pad + strip) | ✗ | ✓ |
| Visual structural diagrams (SVG) | ✗ | ✓ |
| Deflection & moment verification | ✗ | ✓ |
| Project Budget Builder | ✗ | ✓ |
| Labor Estimator (20+ tasks) | ✗ | ✓ |
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