Renovation and restructuring of the existing
1/50 compliant DWG plans, Revit model for preliminary/detailed/execution studies, project-vs-site gap management.
SERVICE · 01 / 06
Millimetric
3D laser scanning.
Leica BLK360 G2 scanner. ±2 mm accuracy at 10 m, 2 million points per second. The standard for geometric survey of the existing — building, heritage, industrial.
Accuracy
±2 mm
at 10 m range
Rate
2M pts/s
2 million points per second
Delivery
15 days
Revit · IFC · DWG · E57
3D laser scanning, or terrestrial LiDAR, is the reference method to capture the exact geometry of a building, an industrial site or an existing monument. An invisible laser sweeps the space 360° from multiple stations and measures the time of flight of each reflected beam. The result: a dense point cloud, geometrically accurate to the millimeter, exploitable to produce plans, BIM models, ortho-images or measurements.
ARPEO operates a Leica BLK360 G2 scanner, the latest generation of Leica Geosystems' compact scanner. ISO 17123-certified accuracy (±4 mm at 10 m on a single point, ±2 mm averaged). Rate of 680,000 to 2,000,000 points per second depending on resolution. Integrated photogrammetric sensor for HDR colorization of the cloud.
3D laser scanning replaces traditional methods (sketch books, laser distance meters, total stations) on projects where geometry is complex, multiple stakeholders must share a common reference, or the existing must be archived long-term. Once acquired, the point cloud is exploitable indefinitely — for plans, a BIM model, or multi-year defect detection.
Mobilization in PACA within 5 working days. Priced quote within 48 h. Contractual delivery 15 calendar days between acquisition and final deliverable. Lambert-93 / RGF93 georeferencing on request.
— EQUIPMENT
The equipment
ISO-qualified scanner and accessories for field acquisition and processing.
Terrestrial 3D laser scanner
Leica BLK360 G2
- ±4 mm at 10 m (single point), ±2 mm averaged
- 2 million points per second
- 0.5 m to 45 m range
- 360° HDR sensor for colorization
- Class 1 laser (eye-safe)
- ISO 17123-9 certification
Multi-frequency RTK GNSS receiver
Emlid Reach RS3
- RTK ±8 mm + 1 ppm planimetric
- RTK ±15 mm + 1 ppm altimetric
- GPS / GLONASS / Galileo / BeiDou / QZSS
- For georeferencing HDS targets
Calibration and registration targets
Leica B-W HDS targets + spheres
- 6-inch and 4-inch black-white checkered targets
- Ø 145 mm reference spheres
- Target-to-target registration under 1 mm
- 30 targets + 8 spheres in stock
Registration and processing software
Leica Cyclone REGISTER 360 PLUS
- Automatic + manual multi-station registration
- Lambert-93 / RGF93 georeferencing
- HDR colorization
- Export to E57, PTS, PTX, RCS, RCP, LAS
— PROCESS
How a 3D scan unfolds
Five steps, from first contact to validated deliverable.
- 01 · BRIEF
Brief & quote
Client brief (PDF guide plan, perimeter, purpose, target LOD). Priced quote within 48 h with package choice and contractual lead time.
Duration48 hours - 02 · ACQUISITION
Multi-station field scan
Leica BLK360 G2 on tripod. 20 to 200 stations depending on surface. HDS targets set for registration accuracy. GNSS georeferencing on request.
Duration1 to 5 days - 03 · REGISTRATION
Cyclone processing
Multi-station registration in-house. Lambert-93 georeferencing on request. Cloud cleaning (occupants, mobile furniture removed). HDR colorization.
Duration2 to 5 days - 04 · DELIVERABLE
Output production
Per quote: raw E57 cloud, 1/50 or 1/100 CAD plans, vectorial DWG elevations, Revit LOD 200/300/400 model, IFC 4.0, high-resolution PNG ortho-images.
Duration3 to 10 days - 05 · VALIDATION
Review & delivery
Client review (PDF presentation + JetStream viewer access). Adjustments if needed. Final delivery via secure link + archival at ARPEO.
Duration1 day
— USES
Uses by sector
Six sectors where 3D laser scanning is a standard practice.
ABF, DRAC, Historic Monument applications
Ortho-facades, vectorial elevations, cloud archiving for multi-year monitoring. Compatible with DRAC and ABF expectations.
ICPE sites, BIM-CIM, maintenance operations
Scan of refineries, factories, SEVESO sites. BIM-CIM integration for predictive maintenance. IFC industrial extensions compatible.
Boundary marking, parcel division, co-ownership
Survey for notarial deeds, lot division, descriptive division statement. Lambert-93 georeferencing.
Multi-trade, structure, fluids, facades
Shared reference model for multi-trade coordination. Avoids survey errors and interpretation gaps.
Report, claim, judicial
Time-stamped cloud archiving for contentious use. Cloud-to-cloud comparison to demonstrate evolution over time.
— DELIVERABLES
Delivery formats
Chosen at quote based on your end use.
| Format | Usage | Size |
|---|---|---|
| E57 point cloud Open ASTM format, read by all software | Open ASTM format, read by all software | 1 to 80 GB per project |
| RCS / RCP cloud Autodesk Recap format, navigation in Revit / AutoCAD | Autodesk Recap format, navigation in Revit / AutoCAD | 1 to 60 GB |
| DWG plan 1/50 or 1/100 ABF-compliant CAD plans, execution project | ABF-compliant CAD plans, execution project | 0.5 to 20 MB |
| Revit model (.RVT) BIM model LOD 200, 300 or 400 | BIM model LOD 200, 300 or 400 | 20 to 800 MB |
| IFC 4.0 Open BIM, BIM Manager exchange | Open BIM, BIM Manager exchange | 20 to 400 MB |
| PNG ortho-facades Rasterized high-resolution elevations | Rasterized high-resolution elevations | 5 to 200 MB |
— STANDARDS
Standards & compliance
Normative framework respected on every mission.
ISO 17123-9
Certified accuracy tolerances for terrestrial laser scanner.
BIMforum LOD Specification
LOD 100 to 500 development levels following the US standard adopted by the French PUCA.
IFC 4.0 (buildingSMART)
Open BIM export, validated by Solibri audit before delivery.
Lambert-93 / RGF93
Systematic georeferencing compatible with public-authority GIS.
— PRICING
How much does a 3D laser scan cost
Flat-rate pricing by surface and complexity. Quote within 48 h.
— RELATED
Where we operate
3D laser scanning is our core craft across the PACA region.
— FAQ
3D scan — frequently asked questions.
What is the difference between 3D laser scanning and photogrammetry?
3D laser scanning actively measures distance with a laser: geometrically very precise (±2 mm), light-insensitive, but native texture less rich. Photogrammetry reconstructs 3D from photos: high-resolution texture, but lower geometric accuracy (±5 mm) and dependence on natural light. We often combine them: scan for structure, photogrammetry for ornaments and color.
What accuracy can I expect from a 3D scan?
Leica BLK360 G2 scanner: ±2 mm at 10 m averaged. Sufficient for: 1/50 ABF-compliant DWG plan, Revit LOD 300 model, millimeter-level structural defect monitoring, BIM integration with cloud-vs-model quality control.
How long does on-site acquisition take?
Plan 1 day of acquisition for 500 to 1,200 m² SDP (standard building). Complex industrial sites or fine heritage: up to 5 days. The scanner is silent and invisible (class 1 laser); in-operation work possible.
Can you scan an occupied site (operating building)?
Yes. The Leica scanner is silent and has no visible laser. Occupants can stay. Occupied zones are scanned in phases (room by room). For 24/7 industrial sites, off-hour work is possible with OPC/SPS coordination.
How many scans (stations) for a project?
Indicative: 1 station per 30 to 80 m² depending on complexity. A 200 m² R+1 house: ~12 stations. A 1,500 m² R+5 building: ~80 stations. An industrial site: 100 to 500+ stations.
Is the laser scanner dangerous?
No. The Leica BLK360 G2 uses a class 1 laser, the safest level (no harm even looking directly at the beam). Same classification as CD/DVD readers. No access restrictions during acquisition.
How is the point cloud archived after delivery?
The final cloud is archived at ARPEO for at least 10 years on redundant storage (RAID + off-site backup). The client also receives a full copy (E57 + RCS) via a secure download link. Free reuse of the cloud for future purposes at no additional cost.
Start a 3d scan project? Quote in 48 h.
Mobilization within 5 working days. Contractual delivery in 15 days.