Civil and Topographic Plans - Terrain, Alignment and Earthwork - Earthwork Workbench
Detailed interpretation of survey-based terrain, contours, profiles, vertical curves, cross-sections, stationing, and earthwork mass balance.
Open the complete lessonMulti-Station Earthwork and Mass-Balance Workbench
Compare average-end-area and prismoidal volumes, convert material states, and trace cumulative surplus or deficit.
- Bank cut
- 450.0 m³
- Unsuitable bank cut
- 22.5 m³
- Usable bank cut
- 427.5 m³
- Compacted fill
- 430.0 m³
- Bank volume required
- 477.8 m³
- Borrow
- 50.3 bank m³
- Waste
- 0.0 bank m³
- External material/haul study
- ₱9,050
| Station | End cut area | End fill area | Next-interval midpoint cut | Next-interval midpoint fill | Section interpretation |
|---|---|---|---|---|---|
| 0+000 | m² | m² | m² | m² | predominantly cut |
| 0+020 | m² | m² | m² | m² | predominantly cut |
| 0+040 | m² | m² | m² | m² | predominantly fill |
| 0+060 | m² | m² | m² | m² | predominantly fill |
| 0+080 | m² | m² | m² | m² | predominantly fill |
| 0+100 | m² | m² | m² | m² | predominantly cut |
| Interval | Length | Cut volume | Fill volume | AEA vs prismoidal difference |
|---|---|---|---|---|
| 0+000 → 0+020 | 20 m | 200.0 m³ | 10.0 m³ | 6.7 m³ |
| 0+020 → 0+040 | 20 m | 110.0 m³ | 50.0 m³ | 4.0 m³ |
| 0+040 → 0+060 | 20 m | 30.0 m³ | 130.0 m³ | 4.0 m³ |
| 0+060 → 0+080 | 20 m | 20.0 m³ | 160.0 m³ | 46.7 m³ |
| 0+080 → 0+100 | 20 m | 90.0 m³ | 80.0 m³ | 0.0 m³ |
| Total absolute method difference | 61.3 m³ | |||
Uses the mean of adjacent end areas multiplied by interval length.
Uses end and midpoint areas; the displayed difference indicates sensitivity to section curvature.
Bank cut, loose haul, compacted fill, unsuitable material, borrow, waste, and project conversion factors must remain distinct.
This workbench is a transparent quantity model, not a final earthwork plan. Real models require surveyed sections or surfaces, stripping, unsuitable material, over-excavation, side slopes, transition stations, haul routes, moisture, shrink/swell testing, and approved pay-item definitions.