Table of Contents
What is laser scanning in BIM?
In a Scan to BIM process, a laser scanner is used to capture an accurate 3D scan of the real world conditions on a project. The scan data is then imported into a 3D modeling environment to create either accurate as-built models or to inform the design with the real world conditions.
How accurate is 3D laser scanning?
Depending on the environment in which the scan is conducted and the specifics of the 3D laser scanner, an accuracy of 0.002-0.197” may be achieved. This high level of accuracy helps ensure that measurements are correct the first time so that less work is needed to complete subsequent steps in design and production.
How does 3D laser scanning work?
3D Laser Scanning Process An object that is to be laser scanned is placed on the bed of the digitizer. The laser probe projects a line of laser light onto the surface while 2 sensor cameras continuously record the changing distance and shape of the laser line in three dimensions (XYZ) as it sweeps along the object.
How does laser scanning work in construction?
It works by digitally capturing the dimensions and spatial relationships of objects using the reflection of a laser light. The technology has a wide array of jobsite applications, including: Pre-construction as-builts. Building Information Modelling (BIM)
How do I Scan to BIM?
The primary method of scan-to-BIM is to use 3D laser scanners to capture a high-density point cloud of a physical building, structure, or site, which leads to the creation and maintenance of a BIM model that reflects “as-is” conditions.
How fast is 3D scanning?
Some advanced white light 3D scanners only need one second to make 16 frames and capture 2 million points of the object. A top-of-the-range handheld scanner with VCSEL technology is capable of going as fast as 80 frames per second and capture up to 4 million points in a flash.
How much do 3D scanners cost?
A handheld 3D scanner can cost less than $200 (XYZprinting’s 3D scanner, for example), and can reach up to over $100,000 for very high-end and advanced 3D scanners. There are plenty of great entry-level options for a couple of thousand dollars. Mid-range handheld 3D scanners tend to cost between $10,000 and $40,000.
What is 3D scanning used for?
3D scanning is the process of analyzing a real-world object or environment to collect data on its shape and possibly its appearance (e.g. colour). The collected data can then be used to construct digital 3D models.
How does a laser scanner gather data?
A scanner uses laser technology to collect a large number of closely-spaced measurements and produce a “point cloud” of 3D points. By setting the scanner in several locations around a scene, investigators can capture multiple point clouds to develop a 3D snapshot of the location.
How is 3D scanning used in construction?
Operations, retrofits and renovations: 3D building scanners capture a very high level of detail, and this helps create a permanent as-built record for both owners and facility managers. In the end, this data can help with building operations, renovations and future building additions and even demolitions.
What is 3D imaging in construction?
3D imaging, also known as laser scan or point clouds, is the process of recording existing conditions into 3D point data. This document assumes the reader is familiar with this form of data acquisition.
How are Advanced surveying technologies transforming scan-to-BIM?
Advanced surveying technologies, including 3D laser scanning and high definition photogrammetry captured by drones, are transforming Scan-to-BIM processes and the way construction projects worldwide are designed and delivered.
What is scan-to-BIM and how does it work?
The “to-BIM” aspect of Scan-to-BIM is arguably the trickiest task for surveyors as they work to transform this detailed, but “dumb”, point cloud data into an intelligent 3D model. A unified point cloud file is typically data heavy and must be broken down into manageable chunks.
Why base your BIM project on data?
Base your BIM project on accurate, real-world data, rather than relying on inaccurate field methods or outdated existing plans. Save time, reduce errors, improve collaboration, and maximize efficiency with precise field intelligence that you can take anywhere.
What is terrestrial laser scanning?
Terrestrial tripod-based laser scanners are able to record interior spaces and exterior facades, or hard to reach mechanical and electrical installations or plumbing, concealed in walls or behind ceiling tiles.