Earthwork Volume Calculator — Formule
## Average End Area Method
The average end area method estimates earthwork volume between two surveyed cross-sections.
### Formula
**V = (A1 + A2) / 2 x L**
where A1 and A2 are the cross-sectional areas at each station and L is the distance between them. For excavated material, apply a swell factor (typically 20-40%) because soil expands when dug out. The loose volume is what determines truck loads.
The average end area method estimates earthwork volume between two surveyed cross-sections.
### Formula
**V = (A1 + A2) / 2 x L**
where A1 and A2 are the cross-sectional areas at each station and L is the distance between them. For excavated material, apply a swell factor (typically 20-40%) because soil expands when dug out. The loose volume is what determines truck loads.
Exemple Résolu
Cross-sections of 25 m^2 and 35 m^2, 50 m apart, 25% swell.
- Bank volume = (25 + 35) / 2 x 50 = 30 x 50 = 1500 m^3
- Loose volume = 1500 x 1.25 = 1875 m^3
- Truck loads (10 m^3 per truck) = 1875 / 10 = 188 loads