Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Civil
Culvert Flow Calculator
Calculate the full-flow discharge capacity of a circular culvert using Manning's equation. Used by drainage engineers to check whether an existing or proposed culvert can pass a design flood without overtopping.
Fill in the required fields to see your result.
Civil
Steel Weight Calculator
Calculate the total weight of steel reinforcement bars (rebar) given their diameter, length, and quantity. Standard quantity-take-off tool for reinforced concrete, using the well-known d²/162 formula derived from steel's density.
Fill in the required fields to see your result.
Key differences
| Culvert Flow Calculator | Steel Weight Calculator | |
|---|---|---|
| Category | Civil | Civil |
| Inputs required | 4 | 3 |
| Result | Flow Rate (cfs) | Total Steel Weight (kg) |
| What it does | Calculate the full-flow discharge capacity of a circular culvert using Manning's equation. Used by drainage engineers to check whether an existing or proposed culvert can pass a design flood without overtopping. | Calculate the total weight of steel reinforcement bars (rebar) given their diameter, length, and quantity. Standard quantity-take-off tool for reinforced concrete, using the well-known d²/162 formula derived from steel's density. |