How 3D Laser Scanning Works
3D laser scanning captures existing conditions by firing millions of precise laser measurements to build an accurate 3D point cloud. Here is the step-by-step process CAD Construct LLC follows, from field capture to final deliverables.
The 3D laser scanning process
- Planning & walkthrough — we review the space and plan scan positions for full coverage.
- Field scanning — a survey-grade LiDAR scanner captures millions of measured points from multiple positions.
- Registration & QA — the individual scans are aligned into one unified coordinate system, typically to 2-4 mm accuracy.
- Processing — the data becomes a clean, registered point cloud in your preferred format.
- Deliverables — we produce what you need: 2D CAD as-builts, a Revit/BIM model, or a 360° virtual tour.
- Delivery & support — files are delivered to your standards, with coordination support as needed.
What you can do with the data
A single scan supports many outputs: accurate as-built drawings, a coordinated scan-to-BIM model, and immersive 360° virtual tours — all from the same field-verified capture. See the terms in our 3D laser scanning glossary.
Frequently asked questions
How accurate is 3D laser scanning?
Our survey-grade workflow typically achieves 2-4 mm registration accuracy.
How long does a scan take?
Field capture is fast — many small-to-mid spaces are scanned in a single visit, with deliverables following within days.
Is scanning disruptive?
No. It is non-contact and quiet, so we can work around occupied, active spaces.
Ready to capture your existing conditions?
Contact CAD Construct LLC or call (800) 967-2627 to schedule a scan across Pittsburgh & Western PA. Explore our 3D laser scanning services.
Related guides
What is a point cloud? · How to prepare for a scan · How long a scan takes
What happens during the on-site scan?
A technician moves a scanner through the space, capturing it from many positions without disturbing anything.
How do you turn scans into drawings?
The individual scans are registered into a single point cloud, then drafted into CAD or modeled in BIM.
How long does the whole process take?
The scan is done in hours; deliverables follow within days depending on complexity.
Do I need to be on-site during the scan?
Not necessarily — we just need access; you are welcome to attend but it is not required.
What is a point cloud?
A point cloud is millions of precisely measured points representing the space exactly as it exists.
Can you scan hard-to-reach or high areas?
Yes — we use appropriate equipment and, where useful, drone capture for roofs and heights.
What do I receive at the end?
The deliverables you chose — floor plans, 3D or BIM models, point clouds, or virtual tours.