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Reinforced Concrete Outfall Headwall Quantity Calculator
Reinforced concrete outfall headwall at ditch or watercourse. Computes excavation, concrete, formwork, reinforcement to BS 8666:2020, and bedding.
Slug · headwall · v1.0
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Reinforced Concrete Outfall Headwall — 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, t, m²
| Code | Description | Unit | Quantity |
|---|---|---|---|
| E.4.3.2 | Excavation for foundations, maximum depth 0.25-0.5m | m³ | 3.77 |
| E.5.3 | Disposal of excavated material off-site | m³ | 2.02 |
| E.6.2.1 | Filling, excavated material | m³ | 1.75 |
| F.1.1.1 | In-situ concrete blinding, C8/10, thickness 75mm | m³ | 0.46 |
| F.6.2.3 | In-situ reinforced concrete C32/40, headwall back wall | m³ | 1.09 |
| F.6.2.3 | In-situ reinforced concrete C32/40, headwall apron | m³ | 1.55 |
| F.6.2.3 | In-situ reinforced concrete C32/40, headwall wing walls | m³ | 0.68 |
| G.5.1.4 | Reinforcement, high-yield steel bars to BS 4449 grade B500B, 12mm diameter, straight bars (BS 8666 shape 00; bar marks B02, A01, A02, W01, W02) | t | 0.21 |
| G.5.1.5 | Reinforcement, high-yield steel bars to BS 4449 grade B500B, 16mm diameter, straight bars (BS 8666 shape 00; bar marks B01) | t | 0.09 |
| G.1.4 | Formwork to vertical and battered faces | m² | 17.6 |
| E.4.1 | Scour protection apron, rock armour, nominal 200mm graded stone | m³ | 2.4 |
Procurement take-off: the total quantity to order of each material, from the same compute. Supplier-neutral, so you buy anywhere.
- Concrete Blinding0.46 m³
- Concrete Reinforced3.32 m³
- Disposal2.02 m³
- Excavation Foundation3.77 m³
- Fill General1.75 m³
- Formwork17.6 m²
- Headwall2.4 m³
- Reinforcement0.3 t
Illustrative example at default dimensions · engine ref 3c34df · not a tendered quantity