Combined Services Trench Quantity Calculator
Multi-utility trench sharing a single excavation envelope following NJUG Volume 1 depth and colour conventions. Computes one shared excavation, earthwork support, and disposal, plus per-service pipe or duct (m), granular bedding, surround, and NJUG-coded warning tape per CESMM4 Class I/L, NRM2 Group 33/41, MMHW Series 500/1300, and SMM7 R/T.
Slug · combined_services_trench · v1.0
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Combined Services Trench — a worked example, measured four ways
The same assembly at default dimensions, rendered as a Bill of Quantities under each measurement standard. Switch the standard to see how the bill changes. Change the inputs in the calculator to compute your own.
CESMM4 · 11 items · units m³, m
| Code | Description | Unit | Quantity |
|---|---|---|---|
| E.4.4.4 | Excavation for pipe trenches, maximum depth 1-2m | m³ | 52.06 |
| E.5.3 | Disposal of excavated material off-site | m³ | 52.06 |
| E.6.3.2 | Filling, imported selected material, Class 6N (selected granular) per SHW 601 Table 6/1 row 6N | m³ | 38.12 |
| L.5.1 | Granular bedding to pipe, Class S per HA 40/01; Class 6N granular fill | m³ | 4.24 |
| L.5.2 | Granular surround to pipe, Class S per HA 40/01; Class 6N granular fill | m³ | 9.68 |
| I.5.1.1 | Water main, MDPE pipe to BS 12201-2 (SDR 11), nominal bore 125mm; laid in trench | m | 50 |
| I.5.1.1 | Gas main (low pressure), MDPE gas pipe to BS EN 1555-2 (SDR 11), nominal bore 125mm; laid in trench | m | 50 |
| I.6.1.1 | Telecoms cable duct, uPVC cable duct to BS EN 50086, nominal bore 100mm; laid in trench | m | 50 |
| Y.6.1.1 | NJUG 7 service marker tape, Blue (water); laid above service, marked 'CAUTION WATER BELOW' | m | 50 |
| Y.6.1.1 | NJUG 7 service marker tape, Yellow (gas lp); laid above service, marked 'CAUTION GAS LP BELOW' | m | 50 |
| Y.6.1.1 | NJUG 7 service marker tape, Grey (telecoms); laid above service, marked 'CAUTION TELECOMS BELOW' | m | 50 |
Procurement take-off: the total quantity to order of each material, from the same compute. Supplier-neutral, so you buy anywhere.
- Disposal52.06 m³
- Duct Service50 m
- Excavation Trench52.06 m³
- Fill Selected38.12 m³
- Pipe Bedding4.24 m³
- Pipe Service100 m
- Pipe Surround9.68 m³
- Warning Tape150 m
Illustrative example at default dimensions · engine ref 8a7c73 · not a tendered quantity