3D laser scanning: precise measurement of buildings and architecture

3D laser scanning is an advanced technology that captures millions of measurement points, mapping buildings and architecture with unmatched accuracy and converting them into detailed construction plans.

The scanners create a virtual “point cloud” of the building, made up of millions of coordinates (X, Y, and Z axes). This process records the exact shape and position of every structural element. The result? An almost immediate 3D model of the building.

During scanning, high-resolution panoramic photos capture fine architectural details. These images can be viewed digitally, eliminating the need for multiple site visits. This allows you to explore and analyze a building thoroughly from the comfort of your desk.

With 3D laser scanning technology, building users experience minimal disruption during surveying. Up to 15,000 m² of floor area can be measured in a single day. Because an entire building is captured in a point cloud within a short time, no additional on-site measurements are required later, even if extra plans are needed during the design process. This results in significant cost savings.

The surveyors at CC Experts work with both static and mobile 3D laser scanners from Leica Geosystems, including the RTC360, BLK360, and BLK2GO. To avoid any misunderstandings, it is important to clearly define in advance how the 3D output should be delivered. A point cloud is a highly valuable product, but it is not the same as an as-built plan in DWG format.

A point cloud alone is rarely sufficient to develop a building project. It first needs to be processed and converted into a precise architectural plan in DWG format for property investors, owners, developers, architects, engineering firms, and contractors. From there, different types of plans can be created:

• A site plan with property boundaries
• Floor plans by level
• Roof plans
• Facade elevations
• Cross-sections and longitudinal sections
• Terrain profiles
• If required, building outlines including adjacent structures

The full 3D scan does not need to be converted into plans all at once. A building can be surveyed in its entirety within a short timeframe, and the required plans can then be delivered in phases as the project evolves. This phased approach ensures greater flexibility and better cost management.

At CC Experts, our surveyors prepare construction plans in full compliance with the standards manual for digital environmental permit applications. This ensures that architects and design teams have all the required information at hand, allowing projects to start quickly and efficiently. With our reliable and precise architectural plans, potential design and execution errors are minimized, thanks to a thorough understanding of the building’s as-built condition.

In practice, architects and contractors often prefer idealized construction plans, where elements such as walls, ceilings, windows, and doors are drawn at exact 90° angles. When drafting plans, our surveyors strike a balance between practical design and accuracy, with a maximum deviation of 15 millimeters from the point cloud.

In addition, CC Experts can create orthophotos of facades requiring restoration. These orthophotos serve as a reference for restoration, damage documentation, or archaeological purposes.