Examples
Examples
Try the starting example
- JSON Trench sections [length m,top width m,bottom width m,depth m]
- [[20,1.2,0.8,1.5],[10,1,0.6,1]]
- Supplied loose-to-bank volume factor
- 1.25
- Bank spoil (m³)
- 38
- Loose spoil (m³)
- 47.5
Try another scenario
- JSON Trench sections [length m,top width m,bottom width m,depth m]
- [[20,1.2,0.8,1.5],[10,1,0.6,1]]
- Supplied loose-to-bank volume factor
- 1.4
- Bank spoil (m³)
- 38
- Loose spoil (m³)
- 53.2
Calculation method
Calculation method
Bank spoil (m³)
sum(r[0]*(r[1]+r[2])*r[3]/2 for r in a)
Loose spoil (m³)
b*sum(r[0]*(r[1]+r[2])*r[3]/2 for r in a)
Symbols and units
- a
- JSON Trench sections [length m,top width m,bottom width m,depth m]
- b
- Supplied loose-to-bank volume factor
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Calculation steps and notation
sum(list) adds all entries in the list.
Assumptions & limits
Assumptions & limits
- Trapezoidal measured trench sections; factors supplied. Pure volume tally without excavation design or stability judgment. Supported limits: All numeric inputs must be finite. Only the explicitly described mathematical scenario is supported.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.