2 Compaction factor
The bulking factor is an estimate and depends on the soil type and excavation method.
Instant Results & Bill of Quantities
In-situ volume (m³)
0.00 م³
Each pit or trench is its own row.
Loose excavated volume (m³)
0.00 م³
Bulking factor
Disposal / haulage volume (m³)
0.00 م³
Imported backfill (m³)
Instant Results & Bill of Quantities
| Item | Weight / Quantity | Formula & Specifications |
|---|
Result type: Detailed Calculation
Formulas & Assumptions
Formulas used
V_in_situ = L × W × D × NIn-situ excavation volumeV_loose = V_in_situ × BulkingLoose volume after excavationV_imported = max(0, V_backfill − V_in_situ)Imported backfillV_disposal = max(0, V_loose − V_backfill × Compaction)Disposal volume
Assumptions & reference values
- Editable assumptionThe bulking factor is an estimate depending on soil type and method — default 1.25.
- Editable assumptionCompaction factor default 1.15, adjustable to the backfill specification.
- Default valueBackfill defaults to the full excavated volume; enter a different value if needed.
Notices: This result is intended for quantity estimation. Verify quantities against approved drawings and project specifications before procurement or construction.
This calculator provides quantity and preliminary cost estimation. Structural design, material specifications and final quantities must be verified against project drawings, specifications and applicable engineering standards.