土方开挖量计算器与土方松散膨胀率估算

Excavation planning has two different questions. How much ground is removed from the cut, and how much room will that disturbed material occupy when it is loaded or stored? This calculator keeps those answers separate.

Bank volume is the geometry of the cut

Multiply length by width by depth to get the bank volume in undisturbed ground. Use this figure when describing the excavation, comparing it with a foundation layout, or checking the amount of material that must leave the cut.

Loose volume is the handling allowance

Digging breaks the original packing arrangement. The soil then occupies more space, so the tool applies a visible expansion band to the bank volume. Use the lower and upper loose figures when choosing skips, truck capacity, stockpile space, or a temporary staging area.

The band is a planning assumption, not a laboratory result. Moisture, density, clay mineralogy, groundwater, excavation method, and later compaction can move the real volume. A site measurement is still needed for a foundation, retaining structure, disposal record, contaminated ground, or expansive clay.