Earthwork Bank & Loose Volume Formula
V_{bank} = L times W times D; quad V_{loose} = V_{bank} times S_{factor}; quad text{Trips} = leftlceil frac{V_{loose}}{text{Truck Capacity}} rightrceil
Engineering Specifications & Method of Calculation
Calculate earthwork quantities for basement excavation, pipe trenches, and footing pits with swell and bulking factors.
Soil Swell & Bulking
When in-situ undisturbed earth (bank volume) is excavated, air voids expand the material by 12% to 35% depending on soil composition (clay, sand, gravel).
Frequently Asked Questions
What is the swell factor of clay soil?
Dense undisturbed clay swells by approximately 30% to 35% when excavated into loose spoil heaps.