3D Laser Scanning & Scan-to-BIM: Digitizing Reality with Millimetric Precision

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What is 3D Laser Scanning?

3D Laser Scanning, also known as Terrestrial Laser Scanning (TLS), is the most advanced technology for capturing physical reality with millimetric precision. The scanner emits millions of laser pulses to measure surfaces, creating a dense "point cloud" that serves as a digital twin of the scanned asset.

At Cartomex, we take this further with our Scan-to-BIM service: we transform raw point cloud data into intelligent Building Information Models (BIM) that architects, engineers, and facility managers can use directly in their workflows.

3D laser scanner capturing building interior
High-speed 3D laser scanning of building interior

Our Scan-to-BIM Process

  1. Phase 1: Data Capture (Field Scanning)

    Using high-speed laser scanners (FARO), we perform a complete site survey. The scanner captures millions of points per second, measuring every visible surface with millimetric precision.

  2. Phase 2: Registration & Processing

    Multiple scans from different positions are aligned ("registered") into a single, coherent, georeferenced point cloud representing the entire project.

  3. Phase 3: BIM Modeling

    This is where value is created. Our specialists import the point cloud into BIM software (Autodesk Revit) and use it as a 3D template to build intelligent parametric models. Every element—walls, columns, pipes, equipment—becomes a smart object with associated data.

Key Applications

Architecture, Engineering & Construction (AEC)

  • As-Built Documentation: Accurate records of existing conditions for renovation and expansion projects
  • Construction QA/QC: Compare as-built to design model to detect deviations
  • Clash Detection: Identify conflicts between disciplines before they occur on site

Industrial & Process Facilities

  • Plant Documentation: Map complex piping, equipment, and structures
  • Retrofit Planning: Design new equipment installations with exact existing conditions
  • Maintenance Planning: Create digital twins for facility management

Heritage Preservation

  • Historic Buildings: Document architectural details for restoration
  • Archaeological Sites: Create permanent digital records of cultural heritage

Deliverables

  • Registered Point Cloud - Industry-standard formats (.rcp, .e57, .las) for CAD/BIM use
  • 3D BIM Model - Intelligent parametric model in native format (.rvt for Revit) at agreed LOD
  • 2D Drawings - Floor plans, sections, and elevations generated from BIM model
  • 360° Panoramas - Navigable imagery linked to scan positions
  • Technical Report - Methodology, accuracy statement, coordinate system documentation

Benefits of Scan-to-BIM

  • Unmatched Accuracy: Millimetric capture eliminates errors from manual measurements
  • Time & Cost Savings: Dramatically faster than traditional surveying, reduces rework from design errors
  • Safety: Minimize personnel access to hazardous or difficult areas
  • Single Source of Truth: One coordinated model for all project stakeholders

Why Choose Cartomex?

  • Complete Workflow: We handle everything from field scanning to final BIM model delivery
  • Expert Modelers: Our team specializes in translating point clouds into functional BIM models
  • Industry Equipment: We use FARO scanners and professional software
  • Value Focus: We understand the goal isn't just a point cloud—it's a practical tool for your project

Frequently Asked Questions

What is the accuracy of 3D laser scanning?

Modern terrestrial laser scanners achieve point accuracy of 1-2 mm at typical ranges. For as-built documentation, we routinely deliver models accurate to ±5mm, which exceeds requirements for most architectural and engineering applications.

What is Scan-to-BIM?

Scan-to-BIM is the process of converting raw point cloud data into an intelligent Building Information Model (BIM). We create parametric 3D objects in software like Revit that contain not just geometry but also metadata about materials, systems, and relationships.

How long does a scanning project take?

Field scanning is fast—we can capture a medium-sized building in 1-2 days. Processing and BIM modeling takes longer, typically 1-3 weeks depending on complexity and the Level of Detail (LOD) required.

What LOD (Level of Detail) do you provide?

We deliver BIM models at LOD 200, 300, or 350 depending on your needs. LOD 200 shows approximate geometry, LOD 300 shows accurate geometry, and LOD 350 includes MEP systems with coordination-ready detail.