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Both calculators run independently — change the inputs on either side to compare results.
Civil
Culvert Flow Capacity Calculator
Estimate the full-flow discharge capacity of a circular culvert using Manning's equation. Used by civil engineers and hydrologists to size culverts for road crossings, drainage channels, and stormwater systems.
Fill in the required fields to see your result.
Civil
Soil Bearing Capacity Calculator
Estimate the ultimate bearing capacity of soil beneath a square footing using Terzaghi's general bearing-capacity equation. Foundational geotechnical design input — used with appropriate safety factors to determine maximum allowable footing loads.
Fill in the required fields to see your result.
Key differences
| Culvert Flow Capacity Calculator | Soil Bearing Capacity Calculator | |
|---|---|---|
| Category | Civil | Civil |
| Inputs required | 3 | 4 |
| Result | Flow Capacity (cfs) | Ultimate Bearing Capacity (kPa) |
| What it does | Estimate the full-flow discharge capacity of a circular culvert using Manning's equation. Used by civil engineers and hydrologists to size culverts for road crossings, drainage channels, and stormwater systems. | Estimate the ultimate bearing capacity of soil beneath a square footing using Terzaghi's general bearing-capacity equation. Foundational geotechnical design input — used with appropriate safety factors to determine maximum allowable footing loads. |