Land and engineering surveyors based in Lancashire

3D Machine Control Services

One Trusted Partner.
OUR ACCREDITATIONS
Constructionline Gold
PAS 128
CDM 2015
CAA Approved
RICS
ISO 9001 (in progress)

3D Machine Control Lancashire and the north west

Machine Control Support for Earthworks & Construction Projects Across the UK

Machine control removes guesswork from earthworks. When excavators, dozers, graders and pavers are guided by precise 3D digital models rather than traditional pegs and boning rods, accuracy improves, rework reduces, setting-out time drops and the programme moves faster. The investment in a well-set-up machine control system pays for itself quickly on any significant earthworks scheme — and the cost of a poorly calibrated one is measured in abortive earthworks that cannot be recovered.

Site Surveying Services has been delivering 3D machine control support across Lancashire, the North West and nationally since the earliest adoption of these systems by UK construction contractors. Our machine control capability grew directly from the setting-out and digital survey work we have always delivered — we understood the data requirements before the technology arrived. We work with Trimble, Topcon and Leica systems, and we have delivered machine control support on major earthworks programmes, highway schemes, slipform paving contracts and airport infrastructure at Heathrow, Gatwick and Stansted.
The difference between a machine control provider that understands survey and one that does not becomes apparent at calibration. If the coordinate system is wrong, the entire site is wrong — and everything built from it is wrong. Getting it right at the start is the only thing that matters.

What Is 3D Machine Control?

3D machine control is a technology used to guide plant machinery such as dozers, excavators, graders and pavers, using GPS and digital design models. By installing a 2D or 3D model into the machine control system, operators can work directly to design without constant setting out, reducing downtime and improving productivity. Machine control supports:

Accurate excavation and grading
Reduced rework and material waste
Faster project delivery
Real-time design compliance
Improved on-site safety

Benefits of 3D Machine Control

Commissioning professional machine control support provides major advantages:

Reduced setting-out time

Operators work directly to the design model without a surveyor pegging every level and line. Earthworks can proceed continuously without waiting for the setting-out team to catch up with the plant.

Improved earthworks accuracy

GPS-guided plant consistently achieves tighter tolerances than conventional peg-and-boning-rod methods. Formation levels are more accurate, surface finish is better and re-cuts are significantly reduced.

Reduced rework and waste

When plant cuts and fills to the correct design level first time, there is no over-excavation to correct and no imported material needed to make up levels that were cut too deep. On large earthworks schemes this is a significant commercial saving.

Faster programme delivery

The combination of reduced setting-out time, better accuracy and less rework consistently accelerates earthworks programmes. On time-critical schemes, machine control is one of the most effective programme tools available.

Real-time design compliance

The operator's in-cab display shows the relationship between the bucket or blade and the design surface in real time. Deviation from design is visible to the operator before it becomes a problem, not after.

Improved on-site safety

Fewer surveyors working around moving plant. Setting-out pegs that present trip hazards are replaced by in-cab guidance. The separation between survey personnel and heavy plant is increased.

The Machine Control Services We Provide.

3D model creation from design data

The starting point for any machine control programme. We take design information in 2D or 3D format — whether that is an AutoCAD DWG, a 12d model, a Civil 3D surface or a PDF of design drawings — and convert it into a machine-ready model formatted for installation on Trimble, Topcon or Leica systems.

Models we produce include: earthworks surfaces and formation levels, road and highway alignments and cross-sections, paving and slipform control models, drainage formation models, and complex multi-surface earthworks with cut and fill boundaries.

The model quality determines the accuracy of every earthworks operation that follows from it. We check every model against the design data before it leaves our team.

Base station hire and setup

A machine control system is only as accurate as its base station. We provide GPS base station hire and setup for construction sites across Lancashire, the North West and nationally — positioning the base station on a stable, known control point, verifying its accuracy against the site coordinate system and confirming the system is operating correctly before plant begins. Base station setup is not a five-minute job. It requires understanding the site control network, verifying the coordinate system and confirming that the base station position is consistent with the design model loaded on the machines. We have seen the consequences of base stations set up incorrectly — and we do not allow them.
3D Machine Control Site Surveying Services

Site calibration and control setup

The coordinate system of the machine control model must match the coordinate system of the site — and that must be verified, not assumed. We carry out site calibrations that tie the machine control system to the site control network established during the pre-construction survey, checking calibration points across the site to confirm consistency and identifying any discrepancies before earthworks begin.

If we have carried out the pre-construction topographic survey or setting-out on the scheme, we already understand the site coordinate system and the calibration is straightforward. If we are coming onto a scheme where another surveyor set up the control, we verify independently before confirming the calibration is correct.

UTS systems — hire and setup

For projects requiring the highest levels of positioning accuracy, we offer Universal Total Station (UTS) system hire and setup. UTS systems use a robotic total station rather than GPS to guide the machine — appropriate where GPS signal is unreliable (under bridges, in cuttings, near tall structures), where the tolerance requirements are tighter than GPS can consistently achieve, or where the work involves slipform paving or other high-precision paving operations. Applications include: high-precision paving, airport runway and taxiway schemes, tight-tolerance infrastructure works and any application where GPS cannot maintain the accuracy the programme requires.

Laser systems — hire and machine setup

Dual-grade laser hire and machine setup for earthworks and construction projects where a laser-guided approach is specified. We provide the laser system, install it on the machine, calibrate it and confirm it is operating correctly. Ongoing site support available throughout the programme.

Land Surveying Services

3D Machine Control for Your Sector

Environmental & Energy
Public Sector & Services
Defence & Justice
Rural & Agriculture
Bathymetric & Hydrographic
Commercial & Retail
Architecture & Project Management
Heritage & Cultural Restoration
Industrial & Logistics
Housing & Development
Infrastructure, Roads & Highways
Demolition & Remediation
Construction & Civil Engineering

Clients and Programmes We Have Supported

CA Blackwell

Long-standing relationship delivering machine control model creation and calibration support on major earthworks programmes. CA Blackwell are one of the UK's leading earthworks and civil engineering contractors and their machine control requirements reflect the scale and complexity of the schemes they deliver.

Priors

Machine control support on civil engineering and earthworks programmes, model creation and base station setup.

Slipform paving contractors

UTS-guided slipform paving operations requiring the highest level of positional accuracy available. GPS is not sufficient for slipform paving — UTS systems are the standard, and setting them up correctly is a specialist task.

Airport infrastructure — Heathrow, Gatwick and Stansted

Machine control support on airport infrastructure schemes at three of the UK's major airports. Airside working, tight tolerances, complex coordinate systems and zero tolerance for error. These are the most demanding machine control environments we work in, and the experience of delivering correctly in these environments is reflected in everything we do on earthworks schemes across Lancashire and the North West.

our 3d machine control case studies

Base Station Setup and 3D Machine Control — East Yorkshire


Machine control setup for a long-standing earthworks client on a scheme in East Yorkshire. Calibration in place from previous visits, base station verified against established control points across the site, designs loaded and confirmed on the machines before earthworks commenced. A straightforward commission made straightforward by the relationship and the established site coordinate system — which is exactly how it should work.

Slipform Paving — UTS Machine Control

UTS system hire and setup for a slipform paving operation — robotic total station guidance rather than GPS, achieving the sub-10mm positional accuracy that slipform paving requires. The system was calibrated against the pavement alignment and cross-section design before a single metre of concrete was laid. The paving proceeded without incident.

Our Services

How 3D Machine Control Integrates With Other Services

Machine control and topographic survey is the most effective machine control programmes begin with a topographic survey that establishes the site coordinate system before any design models are created. Where we have carried out the pre-construction topographic survey, we already understand the coordinate system — calibration is faster, more reliable and any discrepancies between the design model and the existing ground are identified before they become earthworks problems. Machine control and control network installation are a stable, accurate control network is the foundation of any machine control programme. We install and verify control networks as part of the pre-construction survey package, ensuring the base station can be accurately positioned and the site calibration checks out across the full working area. Machine control guides the bulk earthworks; setting-out engineers verify the formation levels, check the finished surface against the design and confirm that the earthworks are within tolerance before the next programme stage begins. We provide both from the same team. Machine control and volumetric analysis, regular UAV volumetric surveys during the earthworks programme provide the commercial team with accurate cut and fill reconciliation, tracking programme progress against the design volumes and identifying discrepancies before they affect the commercial outturn.

Why Choose Site Surveying Services for 3d machine control?

On site. On spec. On time.

fast turnaround

Get a quick quote and a survey team prepared for instruction. When the programme window opens, we're ready.

PAS 128 Accredited

British Standard utility mapping. Quality Level B means physical verification of every service - not just surface evidence.

Lancashire-Based

Headquartered in Clitheroe. We know the North West - the sites, the contractors, the programmes. Local knowledge backed by national capability.

Programme-Critical

Data that works in your environment from day one. BIM to your EIR. CAD to your spec. No reprocessing. No delays to the design team.

Frequently Asked Questions

What is 3D machine control?

3D machine control is a technology that guides construction plant — excavators, dozers, graders and pavers — using GPS or total station positioning combined with a digital design model loaded into the machine’s in-cab computer. The operator’s display shows the real-time relationship between the machine’s cutting edge or blade and the design surface, allowing them to work to formation level without conventional surveying pegs or boning rods. The result is faster, more accurate earthworks with less rework and less surveying time spent around moving plant.

GPS machine control uses satellite positioning to determine the machine’s position and guide it to the design surface. It is effective across most earthworks applications and achieves typical positional accuracy of 10–30mm depending on the system, the conditions and the GNSS correction signal quality. UTS (Universal Total Station) machine control uses a robotic total station tracking a prism on the machine to determine position — achieving sub-10mm accuracy and performing reliably in environments where GPS signal is obstructed or unreliable (under structures, in cuttings, near tall buildings). UTS is the standard for slipform paving and other high-precision applications where GPS accuracy is insufficient.

We need the design data in digital format — typically AutoCAD DWG, Civil 3D surface files, 12d model data or PDF drawings from which we can digitise the design. The more complete the design data, the faster and more accurately we can produce the model. We also need to understand the site coordinate system so that the model aligns correctly with the machine control base station calibration. If we have carried out the topographic survey on the scheme, we already have this information.

If the site calibration is wrong — meaning the machine control coordinate system does not correctly match the site control network — everything the plant does is wrong by the calibration error. Excavation that appears to be at the correct design level is not. Earthworks that appear to be in the correct position are not. This error compounds through every subsequent construction activity built on top of it. We verify calibration against multiple check points across the site before any plant begins. A failed calibration check is identified and corrected at setup — not discovered when the earthworks are finished.

We work with Trimble, Topcon and Leica machine control systems — the three primary platforms used across UK construction and earthworks. Our team understands the model formats, calibration procedures and base station requirements for each system. If your plant is running a less common system, tell us at the time of enquiry and we will confirm compatibility.

Yes. Not all design information arrives as 3D surface data. Where design drawings are in 2D — plan and section format — we digitise the design and build the 3D surface from the drawing information. This is more time-consuming than working from 3D design data and the model quality is dependent on the completeness and accuracy of the 2D drawings, but it is a service we provide regularly on schemes where the design has not been produced in a 3D environment.

Yes. For long-running earthworks programmes, ongoing site support is available — recalibrating the base station when it is moved, updating models when the design changes, checking calibration at the start of each working week and troubleshooting system issues. The frequency of support visits depends on the programme and the complexity of the scheme. We agree the support schedule at the time of instruction.

No — and it should not. Machine control guides bulk earthworks efficiently, but it does not replace the verification function of a setting-out engineer. Formation levels need to be checked by a surveyor before the next programme stage proceeds. Control points need to be verified periodically. Design changes need to be reflected in updated models. And on schemes with complex geometry, tight tolerances or phased earthworks, a setting-out engineer working alongside the machine control system is always the correct approach. We provide both.

Our head office is in Clitheroe, Lancashire, with offices in Matlock, Newcastle and Bristol. We deliver 3D machine control services across the North West, North East, Midlands and South West as primary territories, and nationally. We have delivered machine control support at Heathrow, Gatwick and Stansted — no scheme is too far or too demanding if the programme requires it.