Add a transparent planning allowance to a measured earthwork quantity and translate the total into whole truckloads. Enter the base volume, allowance percentage, and usable truck capacity. The results show the extra quantity, total planned volume, full load count, and final partial load—useful for procurement, disposal, hauling, and checking whether a contingency is being counted twice.
Total planned quantity = base quantity + allowance. Truckloads = round total ÷ usable truck capacity up to the next whole load.
The planned quantity includes the base takeoff plus only the allowance entered here. The truck result rounds upward because any remainder still requires another trip.
Choose the allowance from project documents, field conditions, or estimator judgment. Confirm usable truck capacity against density and legal weight limits.
For 1,200 yd³ with a 10% allowance, add 120.00 yd³ and plan 1,320.00 yd³. With 18 yd³ per truck, that requires 74 loads; the last carries about 6.00 yd³.
The base quantity is multiplied by the entered allowance percentage, and that extra quantity is added to the base.
No. It is a planning margin for variability, handling, unsuitable material, trimming, or measurement uncertainty.
The total planned volume is divided by usable volume per truck, then rounded up so the final partial load is included.
Yes. Enter the usable volume allowed by material density, legal weight limits, and safe loading—not just the body’s geometric volume.
Yes. A zero allowance returns the base quantity, while still estimating required truckloads.
| Input | Purpose |
|---|---|
| Base material quantity | Measured or required amount |
| Allowance rate | Allowance added to base quantity |
| Usable truck capacity | Usable volume per trip |