Engineering-Grade As-Built Surveys for Infrastructure & Industrial Projects
Engineering-grade data for industrial plants, infrastructure assets and complex building systems. PE-stamped deliverables for mission-critical projects.
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Send us the building location, approximate square footage and required deliverables. We'll review the scope and get back to you. Send us the building location, approximate square footage and required deliverables. We'll review the scope and get back to you.
Infrastructure and industrial engineering projects operate under tolerances and liability standards that most building surveys never touch. A bridge deflection reading, a tunnel clearance measurement or a utility corridor as-built feeds directly into structural calculations and safety decisions, which means the underlying data has to be defensible, not just approximately right.
DCMS supports engineering firms, municipalities and industrial owners with LiDAR-based structural monitoring, corridor surveys and utility documentation, delivered in a format that plugs directly into an engineer's analysis workflow rather than requiring re-measurement.
This page covers structural deflection monitoring, corridor and utility surveys, and how we work alongside engineering firms of record on mission-critical infrastructure projects.
Structural deflection and health monitoring
Bridges, elevated structures and long-span buildings deflect under load in ways that are difficult to measure accurately with conventional survey equipment, especially when repeat measurements over time are needed to track trends.
We capture baseline and follow-up scans registered to the same control network, producing deflection data an engineer of record can use to track structural performance over months or years rather than relying on a single snapshot.
- Baseline and repeat scans for long-term deflection trend analysis
- Point-cloud-derived deformation reports comparing capture dates
- Data formatted for direct import into structural analysis software
Highway, rail and tunnel corridor surveys
Linear infrastructure projects need survey data along the full length of a corridor, often under active traffic or operational constraints. Drone LiDAR and mobile mapping let us cover kilometres of highway, rail or utility corridor in a fraction of the time a conventional total-station survey would take.
We deliver corridor cross-sections, clearance envelopes and topographic data tied to project control, formatted for civil design software.
Utility and underground infrastructure as-builts
Utility corridors and tunnel systems accumulate decades of undocumented modifications, and locating existing infrastructure before new construction is one of the most common causes of costly change orders on civil projects.
We combine LiDAR with utility locating data to build a coordinated as-built of underground and above-ground infrastructure, reducing the risk of a design proceeding around utilities that were never accurately mapped.
Working with the engineering firm of record
Infrastructure projects almost always have an engineer of record who carries liability for the final design and stamps the deliverable. We treat that relationship as central to how we scope and deliver work: our survey data is formatted to fit directly into the EOR's existing workflow, and we coordinate control networks, tolerances and file formats before mobilization rather than after.
Where a project requires PE-stamped survey deliverables, we coordinate that sign-off through our engineering staff or the client's engineer of record.
Safety and access on active infrastructure sites
Highway shoulders, active rail corridors and elevated structures carry real safety risk during data capture. Our crews hold the traffic control and confined-space training required for active infrastructure sites, and we coordinate lane closures, track possessions or shutdown windows with the site owner in advance.
Typical scope & deliverables
What a standard engagement in this industry usually includes.
| Deliverable | Typical use | Format |
|---|---|---|
| Structural deflection report | Bridge and long-span monitoring | PDF report + point cloud |
| Corridor cross-sections | Highway/rail design | DWG / civil 3D compatible |
| Utility as-built | Underground infrastructure documentation | DWG / GIS |
| Clearance envelope survey | Tunnel and bridge clearance compliance | PDF / DWG |
| Topographic survey | Site grading, drainage design | DWG |
| PE-stamped survey deliverable | Regulatory and design submission | PDF, signed and sealed |
What goes wrong without accurate as-builts
On infrastructure projects, bad survey data does not just cost money, it can compromise safety decisions. A deflection reading with too much noise, a corridor survey missing a utility conflict, or a clearance measurement off by a few centimetres can propagate directly into a structural or civil design.
The cost of catching these problems after construction starts is dramatically higher than catching them during survey and design.
- ▸Utility strikes during construction when underground infrastructure was not accurately mapped
- ▸Structural monitoring gaps that miss early signs of deflection or settlement
- ▸Design rework when corridor survey data does not match field conditions
- ▸Regulatory delays when survey deliverables are not stamped or formatted to the standard required
- ▸Safety incidents when clearance data used for design does not reflect as-built conditions
- ▸Corridor length and access complexity (active traffic, rail possessions, confined spaces)
- ▸Whether repeat monitoring scans are required over time versus a single capture
- ▸PE stamping and regulatory submission requirements
- ▸Utility locating coordination alongside LiDAR capture
- ▸Drone vs. terrestrial capture mix based on site conditions
- ▸Level of integration required with the engineer of record's existing design software
Reference ranges: scan-to-DWG $0.35–$0.85/sq ft, LOD 300 Revit $0.90–$1.80/sq ft, digital twin build $1.50–$4.00/sq ft. Final pricing depends on the drivers above.
- 01Coordination with the engineer of record to confirm control network, tolerances and file format requirements
- 02Site safety planning, including traffic control, rail possessions or confined-space protocols as needed
- 03LiDAR and/or drone capture along the corridor or structure
- 04Registration and QC against project control
- 05Deflection, clearance or utility analysis and reporting
- 06PE stamping and delivery in the required regulatory format
Related services and service areas
These pages cover the delivery details and Montréal-area logistics behind this industry work.
Frequently asked questions
Can you monitor bridge deflection over time?+
Yes. We capture baseline and repeat scans registered to the same control network, producing trend data an engineer of record can track across months or years.
How do you survey an active highway or rail corridor safely?+
Our crews hold traffic control and rail safety certifications, and we coordinate lane closures or track possessions with the site owner before mobilization.
Can your survey deliverables be PE-stamped?+
Yes, where required we coordinate PE stamping through our engineering staff or the client's engineer of record.
Do you locate underground utilities as part of the survey?+
We coordinate LiDAR capture with utility locating data to build a combined above and below-ground as-built, reducing the risk of undocumented utility conflicts.
What format does your data come in for civil design software?+
We deliver corridor and topographic data formatted for standard civil design platforms, coordinated with your design team's existing workflow.
How accurate is drone LiDAR for corridor surveys?+
Typical accuracy is ±15-30mm, sufficient for most corridor design and clearance verification work, with terrestrial LiDAR used where tighter tolerances are required.
Get a Quote for Your Project
Send us the building location, approximate square footage and required deliverables. We'll review the scope and get back to you. Send us the building location, approximate square footage and required deliverables. We'll review the scope and get back to you.