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3D Laser Scanning for Construction

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Shawn Harriman

on 5 February 2014

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Transcript of 3D Laser Scanning for Construction

Use in BIM/CAD
3D Laser Scanning Technology
The scanner uses phase shift technology with an infrared laser. When the laser comes in contact with an object, its X, Y, and Z coordinates are recorded.
Data Capture
Advantages of 3D Scanning
By the Numbers
The single point measurements are repeated up to 976,000 times per second. The result is a 3-dimensional point cloud.
Depending on the resolution of each scan, a single point cloud can contain between 3 million to several hundred million scan points.
How Laser Scanning Works
Establish strategic locations for each scan to maximize the amount of data visible to the laser.
Optionally establish a geo-reference point and tie the scanner"s lacation to that point.
Identify registration targets and register the scan locations into a single point cloud.
Export clipped views, sections, slices, and topography maps to a variety of file formats that can be used with other applications .
Open or insert the point cloud data into AutoCAD, Revit or many other CAD and modeling applications.
A single scan can capture 1 Mpts - 711 Mpts and the capture time can range from 2 minutes - 2 hours.*

A typical interior scan averages between 3 & 6 minutes and captures between 7 Mpts to 28 Mpts points.*

A 1,000 S.F room can be scanned in about 10 minutes or less and there is roughly 50 Mpts recorded in 224 MB of data including color photos.*

The average time to capture a single exterior scan is 10 minutes and there is roughly 48 Mpts recorded in 211 MB of data including color photos.*
TX5 3D Laser Scanner
Registration Sphere
Identified as a fixed reference object in the software to align and orient each scan to its actual location.
Captures the data to a removable SD memory card which is later imported and processed using proprietary software.
Scanning Equipment
Optional 70 MP photos can be taken during the scanning process then used to colorize the point cloud during processing.
"Actual-Built" Data Capture - An accurate snapshot in time
Start the design process using actual 3D conditions, accurate to 2 mm. Reduce guess work for tenant improvements, remodeling or master planning projects.
Space Planning
Spatial planning in existing facilities becomes more efficient by extracting floor plans from the point cloud data and providing an accurate canvas to design your desired spaces.
Facility / Asset Management
Every detail is captured by the scanner which can then be used to track and log assets throughout your facilities. Because the scanner captures everything that is visible, items including furniture, computers, IDF cabinets, light fixtures, window curtains/blinds, data & power outlets, casework, etc, are accounted for in a three-dimensional visual inventory.
Floor Flatness Analysis
Discover floor areas that require grinding or floating prior to installing floor finishes or fixed casework.
Roof Slope / Drainage Verification
Solve water ponding issues by acquiring accurate slope measurements across low-slope planes, valleys and roof drain areas.
20,000 s.f. Single-Story Building

500 Mpts Captured

Data Utilization

1.2 Acres of Campus

216 Mpts Captured

Data Utilization

Case Studies
3.5 days to scan
Interior, exterior and roof captured
162 scans were captured
15 GB of data was recorded
Actual-built records
Asset Management
Site Topography / Drainage Evaluation / Cut & Fill Calcs
Identify drainage deficiencies and ponding areas by creating topography maps from the scan data. Vertical horizontal and angular measurements can be taken to identify problem areas.
Accessibility Compliance
Easily identify accessible path of travel areas that do not meet slope or cross-slope requirements, building access and curb ramps that are out of compliance, and elevation changes at surface transitions.
Behind the Zeros and Ones
2.5 Hours to scan
Exterior site, accessories, and adjacent structures
7 Scans were captured
1.4 GB of data was recorded
Accessibility compliance discovery
Actual-built records
Folsom Cordova Unified School District
Placer County Office of Education
Questions or Comments?
Point Cloud Processing
Full transcript