In-Situ & Precast Concrete · NRM2 Section 11 (In-Situ & Precast Concrete)

UK Concrete Estimating for Substructures, Formwork & RC Frames

Accurate cubic-metre concrete volumes paired with F1–F3 formwork surface areas, construction joints, waterbars, blinding, and slab finishes.

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How is concrete measured under RICS NRM2?

Concrete contractors require far more than raw slab volume—true tender cost depends on formwork repetition, pour heights, kicker height, waterstops in basements, pump reach, and surface finish classes. Every NRM2 Section 11 variable is separated cleanly.

Concrete volumes split cleanly by BS 8500 concrete class and sulfate exposure design.
Edge formwork, soffit shuttering (>3.5m prop height noted separately), and architectural fair-faced concrete areas are isolated.

Which deliverables and drawings are involved?

Ready-mix concrete volume schedule (m3 by grade)
Formwork surface area schedule (m2)
Movement joint, waterbar & finish quantities

Drawings & Inputs Accepted

Foundation & slab plans
Structural column/wall/stair core sections
Pour sequence & construction joint specs

Measurement & Deliverable Parameters

How are UK concrete takeoffs structured for tender accuracy?

Concrete Estimating — UK Measurement Units, Deliverables & Workflow Specification
Estimating Parameter	Technical Specification	Standard / Audit Basis
Work Breakdown & Units	NRM2 Section 11 (In-Situ & Precast Concrete) in m3, m2, m, nr	Scaled PDF / DWG plans at 1:50 & 1:100 (dimensions in mm / m)
Waste & Prelim Separation	Net physical takeoff plus 5%–10% typical trade waste split	Keeps net order counts transparent for merchant tenders
Deliverable Workbook	100% unlocked formula Excel + colour-coded PDF overlays	Includes formal RFI log flagging drawing ambiguities
Turnaround & File Transfer	24–48 hrs (domestic/single trade) · up to 25 MB uploads	3–5 working days typical for multi-trade commercial tenders

Calibration note: 1:50 and 1:100 architectural and structural drawings are scaled to 25 mm masonry tolerances and 100 mm thermal zones, isolating 5 percent to 10 percent wastage from net quantities.

Where is concrete estimating typically applied across UK projects?

Basement waterproof concrete boxesTrench-fill & raft housing padsCommercial RC lift/stair coresIndustrial heavy-duty ground slabs

Targeted UK Coverage

Concrete Estimating by UK City, County & Postcode District

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Concrete Estimating FAQs

Do you separate concrete blinding, structural pours, and screed toppings?

Yes. 50mm–75mm lean-mix blinding, DPM/vapour barriers, structural slab pours, and sand-cement or flowing screeds are itemised on separate lines.

Do you measure formwork for curved or battered concrete walls separately?

Yes. Straight vertical shuttering, battered formwork, curved walls, and boxed pockets/upstands are clearly differentiated.

Are expansion joints, dowel bars, and hydrophilic waterbars included?

Yes—linear construction joints, crack-inducers, shear dowels, and waterbars shown on basement/slab details are quantified in metres.