3D High Definition Laser Scanning

SEI offers High Definition 3D Laser Scanning Services supplementing our traditional Land Surveying services as well as providing useful “technology” to our other divisions and clients alike.

3D High Definition Laser Scanning Basics

An HD Laser Scanner is a device that emits and detects laser light pulses to record 3D spatial information of objects in its field of view. The Leica scanners utilized by SEI record spatial data in a 360 degree field of view horizontally and 270 – 310 degrees vertically. The Leica Scan Station 2, commonly used in outdoor projects, is capable of collecting up to 50,000 points per second up to a 950 foot range. The Leica HDS 6000, typically utilized indoors in complex environments, is capable of collecting up to 500,000 points per second at a 250 foot max range. Multiple scans are taken within an environment and set up utilizing traditional survey control. The individual scans are combined or “registered” together to create a composite point cloud. The point cloud or spatial data set can then be utilized for a host of projects.

MEP

HD scanning of mechanical rooms, pipe rooms and/or other facilities provides MEP’s with the detailed as-built information needed to redesign and retrofit systems without unnecessary down time. Accurate 3D models of structures recorded within the point cloud can be produced and utilized to identify potential interferences with new systems.

Architectural

Architects are using high definition scans to aid in their visualization of renovations or other building improvements. Scans may also be used to measure existing roof, wall, or other structural members where these measurements may be critical to a historical rehabilitation project

Engineering / Surveying

High accuracy and detailed survey scan data can be obtained along roadway corridors and intersections quickly without shutting down traffic or putting field crews in danger. Scan data is commonly utilized to create base maps for transportation design projects. Scan data may also be used to create site topography with an accuracy of up to 0.02/ft (6 mm). Volumetric calculations may be performed from this information to assist in site development estimation.

Clash Detection and Interference Check

A 3D model may be inserted into an HD Spatial Dataset (Point Cloud) where it may be run against the point cloud to identify areas of interference or clashes detrimental to existing and proposed systems. SEI’s HD Scanning along with Clash Detection services can improve design accuracy, efficiency and reduce field changes.

Benefits:

• Higher level of detail and accuracy than traditional surveying
• Faster data collection
• Provide high accuracy survey data of areas that may otherwise be too dangerous to acquire under traditional survey methods.
• A one-time scan may eliminate the need to return to the site in the future
• Typically lower cost