Laser Scanning Masonry Walls Lincoln NE
Laser Scanning Masonry Walls
Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: April 1, 2007
By Kenny Kendall
Laser scanning and masonry construction may seem like an odd combination. Laser scanning is a relatively new technology (less than ten years) while masonry has been around for centuries; however, scanning and masonry construction are in reality a natural combination.
While laser scanning can be used to verify new building tolerances, the real advantage is realized for existing construction. Older buildings suffer the effects of time, especially in freeze/thaw climates, unstable soils, or seismic areas. Eventually, masonry construction cracks, moves, or bulges. Masonry walls in this condition can suddenly topple to the street below, possibly with deadly effects.
In addition, masonry modifications, repairs, or other changes may not be reflected in the original design documents. Laser scanning records all movements as well as modifications.Three components
Laser scanning consists of three main components: scanner, software, and computer. The scanner produces a laser beam of pulsed or phase shift energy from the unit to the area being checked. This pulse (point) of energy is reflected and returned to the unit where it is incorporated into the master point cloud. The returned point has all the correct spatial data, such as X, Y, and Z (elevation) coordinates of the area.
|A point cloud of the structure above|
Individual scanner set-ups and resultant point clouds can be regis...
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