Site Setting Out
icelabz provides setting out services for construction projects. Setting out engineers establish survey control, set out grid lines and levels, and verify construction against design. The work is the critical link between the architect's or engineer's drawings and what is actually built on site, and it is governed in the UK by a small set of well-defined British Standards and RICS guidance.
What site setting out covers
Setting out is the physical transfer of design coordinates and levels from the drawing into the ground. It covers:
- Survey control — establishing primary control stations on or near the site, referenced to OS coordinates and a known height datum (typically Ordnance Datum Newlyn).
- Grid lines and levels — setting out the building grid, floor levels, and key reference points.
- Boundary setting out — verifying the building footprint against the title plan and any Section 106 / planning constraints.
- Structural setting out — setting out foundations, piles, columns, walls, and steel.
- Drainage and highway setting out — setting out invert levels, falls, kerb lines, and road levels.
- As-built verification — checking the constructed position against design at each stage.
- Monitoring — tracking movement of adjacent structures where required by a Section 80 / party wall award or planning condition.
The setting out process
A typical setting out engagement on a UK construction project follows this sequence:
- Brief and design review — the icelabz surveyor reviews the architect's or engineer's drawings, the planning conditions, and any constraints (e.g. party wall awards, Section 80 requirements).
- Control establishment — primary control stations are set out and tied to OS coordinates and a known height datum. This is the reference frame for the whole project.
- Grid and level transfer — the building grid is set out from the control stations, and a Temporary Bench Mark (TBM) is established on site for ongoing level transfer.
- Element setting out — foundations, piles, walls, columns, steel, drainage, and highways are set out as the construction programme requires.
- As-built verification — at each key stage (e.g. foundation pour, steel erection, drainage completion), the constructed position is checked against design.
- Monitoring — if the project affects adjacent structures, monitoring stations are installed and read at the cadence.
- Handover — the as-built record is issued, including the final positions of any agreed deviations from design.
Instruments and accuracy
The instruments used depend on the tolerance band required. For typical building work, a robotic total station with a 1″ or 2″ angular accuracy and a 1 mm + 1.5 ppm distance accuracy is the standard. For larger sites, GNSS is used to tie the control network to OS coordinates. For fine level transfer, a digital level is used to ±0.5 mm per km double-run.
In the UK, the acceptance criteria for building setting out are set out in BS 5964-1:1990 (Building setting out and measurement — Methods of measuring, planning and organisation and acceptance criteria), with supporting guidance in BS 5964-2:1996 (measuring stations and targets) and BS 5964-3:1996 (check-lists for procuring surveys). The wider tolerance principles for design and construction are covered in BS 5606:2022 (Accuracy and tolerance in design and construction).
For the survey specification, control framework, datum, and deliverables, the reference is the RICS Measured Surveys of Land, Buildings and Utilities, 3rd edition, which is the standard icelabz works to on every UK setting out engagement.
When to commission setting out
Setting out should be commissioned:
- Before any excavation — to confirm the building footprint against the title plan and to set out the foundation positions.
- At each structural stage — foundations, ground floor, upper floors, roof.
- Before any drainage or highway work — to confirm invert levels, falls, and kerb lines.
- Whenever a Section 80 or party wall award requires it — to record the pre-construction condition of adjacent structures and to monitor during the works.
- At handover — to produce the as-built record for building control, warranty providers, or facilities management.
The icelabz service
icelabz provides fixed-fee setting out for UK construction projects. Survey scope is confirmed before instruction, so there are no hidden charges. Every setting out is reviewed by a senior surveyor before issue, and every engagement is issued with a signed accuracy statement that ties the work to BS 5964 and the RICS Measured Surveys standard.
Contact icelabz with your construction requirements for a fixed-fee quote.