Benefits of laser surveying

3D laser scanning surveys show incredible detail and capture a lot of data very quickly.  A laser survey will include accurate measurements of detailed building features that are extremely hard to survey using the old style traditional equipment, such as cornices and architrave details.

The speed at which data can be captured reduces the amount of time needed on-site, causing less disruption to property owners, businesses and tenants.  A typical 3D laser scan takes just 3.5 minutes.  It can also mean that a measured building survey can take place without the need for special access equipment.

A laser survey collects data from neighbouring properties too, which when used correctly will provide useful information about the site such as window positions, tree heights and neighbouring build heights and proximity.

The benefits of a digital survey are significant when considering large buildings and spaces where detail at height is important, such as churches and tall facades.  With a laser survey there is no need to gain access at height in order to register their dimensions.  The precise shape of a building, a bulge in the wall or irregular spacing of timbers across a ceiling can be measured from ground level.

As the scanner can only scan what is in its line of sight, it has to be set up in multiple locations.  To join all the individual 3d laser scans together a control network of targets are placed around the site before the laser survey starts.

The process of a laser survey requires a scanning head to be mounted onto a surveyors tripod, the scanner then spins at high speed whilst a low energy laser fires a reflecting beam, recording upto a million points per second.  You can adjust the density of these points depending on the purpose of the survey.  Together the points are known as a pointcloud and using special software it enables you to fly around and fly through the scan data on computer screen.  These pointcloud images can be rotated, enlarged and interrogated for dimensions and levels.  You can even use the images to see structural defects such as cracks and sagging beams.

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