Spoil truckloads Calculator: measuring notes and method
Transfer the in-place volume
Start with the excavation quantity before swell. For 12 m³ in place and an illustrative 20% swell, loose volume is 14.4 m³. A 6 m³ usable load gives three trips by volume.
Check the limiting capacity
Confirm access and disposal restrictions with the haulier as well as usable capacity. A volume-based trip count is only part of arranging the removal.
CHECK A PRACTICAL EXAMPLE
One extra trip at a capacity boundary
A 12 m³ in-place excavation expands by an illustrative 20%. Compare two usable truck capacities.
8 m³ usable load
- Truckloads
- 2
- Loose volume
- 14.4 m³
6 m³ usable load
- Truckloads
- 3
- Loose volume
- 14.4 m³
Loose volume stays at 14.4 m³. These are volume-only trip counts: the haulier must also check material weight against legal payload and access restrictions.
Fixed comparison in metric units. Values are illustrative unless linked to a recorded project; changing the calculator above does not change this example.
Formula
Loose volume = in-place volume × (1 + swell ÷ 100). Loads = round up (loose volume ÷ usable capacity).
Worked examples in metric and imperial units
Illustrative values match Reset example and stay fixed when you edit the calculator. Both columns describe the same calculation; converted inputs are rounded.
Metric worked example
- In-place excavation volume
- 15 m³
- Swell allowance
- 20 %
- Usable truck volume
- 8 m³
Truckloads: 3
Imperial worked example
- In-place excavation volume
- 19.6193 yd³
- Swell allowance
- 20 %
- Usable truck volume
- 10.4636 yd³
Truckloads: 3
Follow the calculation
- Loose volume = 15 × (1 + 20 ÷ 100) = 18 m³.
- Divide by 8 m³ per usable load, then round up to whole trips.
Unit conversions
1 m³ = 1,000 L ≈ 1.30795 yd³. One cubic yard is 27 ft³.
Reviewed 19 October 2026. How calculations are checked · Report a correction