Laser Scanning

Case studies

Reinforcement scan

Often when using a vertical or horizontal steel reinforcement cage in a concrete structure, it is necessary to know where the spaces between bars are in order to subsequently drill anchors and fixings into the concrete. The laser scanner is by far the most efficient way to do so, accurately and quicky capturing a complete point cloud of the reo. The P50 can scan to a resolution of 0.6mm, so even cages of thinner rebar can be captured, and afterward the drill points can be determined and set out confidently with no risk of hitting steel.

Asbuilt Records & Claim Verification:

Laser scanning creates a record of the site at a point in time, capturing all the construction activity that has been completed to date which can be used for progress validation as well as quality checks of asbuilt to design. Certitude Surveys can complete periodic scans of developments for asbuilt purposes or to support, or check, progress claims. For instance, complex SMP projects can be challenging to effectively document using traditional survey techniques, especially where large amounts of pipework are involved. However, an accurate laser scan effectively captures the entire built environment, and allows many potential deliverables including the following:

Verticality checks of steel members
Pipework mapping with accurate position of all pipes, flanges and valves
Directly compare the 3D point cloud to the design model and identify areas of non-compliance
Allow the client to examine point cloud data in free programs such as Autodesk Trueview, empowering them to check asbuilt against design instead of simply delivering a pdf point comparison.

Certitude Surveys delivers the highest quality point cloud data, as built drawings, and scan to BIM models, using the highly accurate long-range laser-scanner the Leica P50. We provide exact dimensions and measurements of projects such as buildings, sites, plants and facilities.

Laser scanning is fast becoming the preferred method of collecting spatial data. It captures the built environment rapidly, accurately, and comprehensively. Some of the benefits of 3D laser scanning are as follows:

Big reduction in time spent on site. Using a scanner, surveyors don’t need to visit a site repeatedly to perform asbuilts, structural surveys and other tasks. A few scan setups can collect the same amount of data as days of work using traditional survey techniques, especially with a high-speed scanner able to collect 1 million points a second.
Accuracy: Of course, very few scanners are able to collect data with the same degree of accuracy as traditional survey techniques. The Leica P50 used by Certitude Surveys, however, is able to capture large sites consistently and precisely to an overall accuracy of 2-3mm or less.
Amount and usefulness of data. Once a scan has been completed for a site, the client keeps the point cloud and can use it for any future purposes they need. For example, taking measurements, producing different types of plans and drawings, giving to architects and structural engineers for upgrades and extensions, or planning maintenance and shutdown work.
Quality of deliverables. Scan data is processed in the office to produce a data-rich, true-colour 3D point cloud which gives a complete digital representation of the site. From this, measurements can be taken, features extracted and drafted in CAD or modelled to form a smart, parametric BIM model.

The uses of laser scanners are almost endless, but see above for some brief case studies in which a laser scanner can give a superior result than any other method and make a project run significantly smoother.

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Laser Scanning

Case studies

Case study

Reinforcement scan

Case study

Asbuilt Records & Claim Verification:

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