Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Uniform planar slope. Does not select rock size, gradation, filter fabric or hydraulic stability.
Example Calculation
- Bank length: 20 m
- Horizontal bank run: 3 m
- Vertical rise: 4 m
- Layer thickness normal to slope: 0.3 m
Bank length = 20 m; Horizontal bank run = 3 m; Vertical rise = 4 m; Layer thickness normal to slope = 0.3 m. Primary result: 30.
Frequently asked questions
How do I use this calculator?
Enter bank length, horizontal bank run, vertical rise, layer thickness normal to slope. The result updates automatically. Use Reset to restore the example values.
What method does it use?
layer volume=bank length ×hypot(run,rise) ×normal thickness.. Uniform planar slope. Does not select rock size, gradation, filter fabric or hydraulic stability.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.