Footing Size Calculator
Calculate foundation footing dimensions and concrete volume based on load and soil capacity.
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What This Calculator Does
Calculate foundation footing dimensions and concrete volume based on load and soil capacity.
It combines Total Load, Soil Bearing Capacity, Footing Shape, Footing Depth to estimate Footing Side Length, Required Bearing Area, Concrete Volume.
Formula & Method
Notation used in the formulas: R = Footing Side Length; x_{1} = Total Load; x_{2} = Soil Bearing Capacity; x_{3} = Footing Shape; x_{4} = Footing Depth.
Method summary: inputs are normalized to consistent units, core equations are evaluated, then secondary values are derived and rounded for display.
Use this calculator for quick scenario analysis. Start with baseline values, change one driver at a time, and compare how sensitive the results are to each input shown above.
Inputs Used
- Total Load: Total load the footing must support
- Soil Bearing Capacity: Allowable soil bearing pressure
- Footing Shape: Used directly in the calculation.
- Footing Depth: Used directly in the calculation.
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