External Civils & Infrastructure · NRM2 Sections 33–36 (Roads, Drainage & Utilities)

UK Sitework & Civils Estimating: Adoptable Roads, Drainage & External Utilities

Comprehensive infrastructure takeoffs covering foul and surface water manholes, SuDS attenuation tanks, adoptable Section 38/278 carriageways, kerbing, and multi-utility trenching.

Request Sitework & Civils Quote View Sample BoQ Structure

How is sitework & civils measured under RICS NRM2?

Civil external works frequently hold the largest hidden contingencies on UK residential and commercial developments. Cross-referencing engineering drainage longs and road sections, we measure pipe invert depths, precast concrete manholes, interceptors, SuDS geocellular crates, binder/surface asphalt courses, and street lighting.

Reads invert and cover levels off manhole schedules to compute accurate excavation depth bands and surround concrete.
Separates adoptable highway S278 off-site junction works from private internal estate roads.

Which deliverables and drawings are involved?

Drainage schedule by pipe dia, depth band & manhole ring size
Carriageway asphalt/paving & kerb buildup BoQ
SuDS attenuation crate, headwall & petrol interceptor list

Drawings & Inputs Accepted

Foul & surface water drainage layouts & long sections
Roadways S38/S278 alignment & construction details
Statutory utility (electric/water/fibre) duct layouts

Measurement & Deliverable Parameters

How are UK sitework & civils takeoffs structured for tender accuracy?

Sitework Estimating — UK Measurement Units, Deliverables & Workflow Specification
Estimating Parameter	Technical Specification	Standard / Audit Basis
Work Breakdown & Units	NRM2 Sections 33–36 (Roads, Drainage & Utilities) in m, m2, m3, 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 sitework estimating typically applied across UK projects?

New-build residential estate civilsCommercial retail car parks & service yardsSection 278 highway bellmouth & crossoversRural drainage, soakaways & package treatment plants

Targeted UK Coverage

Sitework Estimating by UK City, County & Postcode District

Related Construction Trades

Demolition, Earthworks & CivilsEarthwork EstimatingView Trade →Demolition, Earthworks & CivilsExcavation EstimatingView Trade →Interiors, Carpentry & FinishesLandscaping EstimatingView Trade →Sector EstimatingIndustrial EstimatingView Trade →

Sitework Estimating FAQs

Do sitework drainage schedules separate Adoptable Sewers (SfA) from private plot drainage?

Yes. Adoptable Type A/B manholes, clay/twinwall pipes, and public connections are split cleanly from private plot gullies and ACO channels.

Are tactile paving, dropped kerbs, road markings, and street lighting columns included?

Yes. Tactile blister flags, transition kerbs, thermoplastic white lining, bollards, and lighting duct/base pits are measured completely.

Do SuDS attenuation crates measure geotextile wrapping, geomembrane welds, and vortex flow controls?

Yes. Crate volumes (m3), impermeable welded membranes, protection fleeces, inspection silt traps, and Hydro-Brake chambers are all itemised.