Our site setting-out services translate design intent into physical reality with millimetre accuracy, ensuring every foundation, column, or service is positioned within the specified design tolerances.
Whether for Commercial Developments, Residential Builds, or Infrastructure Projects, we use advanced technologies, verified control networks, and meticulous quality assurance processes to eliminate costly rework and delays.
How We Delivery Accuracy
Initial Site Checks & Control Establishment
Before any site setting-out begins, our engineers verify existing control stations using redundant observations and closed traverse techniques to confirm positional reliability.
When a new network is required, it’s established using least-squares adjustment, achieving the highest confidence intervals possible.
Depending on the project scope, control is established to either:
- Georeferenced Grid (e.g., OS National Grid) — for major infrastructure or multi-phase developments, ensuring national coordinate traceability; or
- Local Grid — for self-contained sites, maintaining datum continuity against benchmarks.
This rigorous process forms the geometric foundation for all downstream works.
Design Data Analysis & Model Coordination
We meticulously review Architectural, Structural, and MEP drawings, as well as CAD and BIM datasets (Revit, IFC, DWG).
Our Engineers extract precise coordinates and dimensional data directly from 2D and 3D models, enabling virtual clash detection before setting-out begins.
This proactive approach eliminates coordination errors and results in a Design Discrepancy Report for the design team – preventing construction delays and ensuring build accuracy from day one.
Precision Site Setting Out
With verified control established, we deploy a modern fleet of advanced equipment, including:
Robotic Total Stations (Leica / Trimble) for single-engineer efficiency.
High-Precision GNSS (GPS/GLONASS) for large-scale or remote site control.
Digital Levels for accurate vertical datum transfer.
We handle everything from foundations and drainage to complex geometries, including:
Curved and raking structural features.
Precast concrete alignment.
Structural steel bolt grids and base plates.
Formwork and plumb verification on multi-storey structures.
Every point is logged with digital, time-stamped photographs and field data records, creating a transparent, auditable QA trail.
Ongoing Verification & As-Built Surveys
Our commitment to accuracy continues throughout the Construction phase.
Regular verification checks ensure ongoing alignment with design intent, while our As-Built Surveys deliver fully transparent reporting.
Our reports include digital overlays and colour-coded deviation maps (known as isopachytes), providing an instant, visual compliance audit against design tolerances – ideal for inclusion within project quality control records and handover documentation.
Accurate Site Setting Out Services
We provide a full suite of site setting out services.
Wind turbine setting out – Precisely positioning turbine foundations, bolt circles, and base coordinates to ensure correct alignment for installation.
Manhole locations – Accurately marking the positions of drainage manholes to match design drawings and underground service layouts.
Finished floor levels – Setting accurate elevation benchmarks to ensure final floor heights match the architectural and structural design.
Boundaries – Identifying and marking legal site boundaries to ensure construction remains within the permitted land limits.
Floor & concrete slabs – Setting out slab edges, levels, and control points to ensure concrete floors are poured to the correct dimensions and elevations.
Grid lines – Establishing the primary structural grid across a site to guide the positioning of columns, walls, and other structural elements.
Solar panel location setting out – Marking the exact placement of solar panel arrays or mounting systems to ensure optimal layout and alignment.
Foundation setting out – Transferring foundation positions from construction drawings onto the site to ensure structures begin in the correct location.
We handle everything from foundations and drainage to complex geometries.
Automated setting out for construction layout – Using digital models and robotic total stations to automatically transfer coordinates directly on site.
Site survey control – Establishing fixed control points across a site to maintain consistent and accurate surveying throughout construction.
Bolt box locations – Positioning anchor bolts and bolt boxes accurately for steel columns, base plates, or structural connections.
Face of brick/block – Marking the finished face line of masonry to ensure walls are built to the correct alignment and thickness.
All external works – Coordinating the layout of landscaping, car parks, drainage, pathways, and other external site elements.
Roads, channels and highways – Setting out road alignments, kerbs, drainage channels, and highway features according to engineering designs.
Setting out for brickwork – Providing accurate lines and reference points to guide bricklayers in constructing walls in the correct position.
Pile locations and levels – Marking the precise position and depth reference for foundation piles prior to piling operations.
Every point is logged with digital, time-stamped photographs and field data records, creating a transparent, auditable QA trail.
Why Choose SEP Engineers?
Established Expertise: Operating since 1986, SEP Engineers bring decades of surveying and engineering experience to projects across the UK, delivering trusted, proven results on complex construction sites.
Experienced Professionals: All Engineers hold CSCS/SMSTS certifications and have a minimum of 5 years’ site experience.
Proven Capability: Site-vetted for high-risk environments including rail, nuclear, and airport projects.
Advanced Technology: Industry-leading robotic and GNSS systems for precise, efficient delivery.
Quality Assurance: Real-time data verification by our Training & Quality Manager and Technical Support Department, ensuring each dataset is validated before use.
Auditable Deliverables: Every setting-out operation is logged, photographed, and archived to support client QA and compliance processes.
When precision matters, SEP Engineers provide the certainty your project deserves.
Looking for Setting-out support?
Submit your enquiry below – we aim to respond within 1 hour (during business hours Monday to Friday)
More Of Our Services
Frequently Asked Questions
- Do you provide as-built surveys after setting out?
Yes. We offer detailed As-Built Surveys with color-coded deviation maps that visually show compliance against design tolerances — ideal for quality control and handover documentation.
- How accurate is SEP Engineers’ setting out service?
Our setting-out adheres to construction tolerances of ±3mm for primary control and ±5mm for structural elements, verified through rigorous QA checks and digital data logging.
- What equipment do SEP Engineers use for setting out?
We utilise a modern fleet including Leica and Trimble Robotic Total Stations, High-Precision GNSS (GPS/GLONASS) receivers, and Digital Levels, allowing single-engineer efficiency and millimetre-accurate results on every project.
- Which projects do you provide setting out services for?
We deliver setting-out services across commercial, residential, and infrastructure projects, including complex environments such as rail, nuclear, and airport sites.
