ABA Surveying

3D Scanning

Client specific surveys

Traditionally datasets captured are based on discreet points. Discreet point datasets must be fully specified by the be client and thoroughly understood by the field surveyor.

Any missed or faulty data or a change in specification from the client requires a revisit by the surveyor. During the life time of a project areas will be resurveyed many times to suit the particular needs of different specialists.

Architect	>>	Specialised survey
Structural Engineer	>>	Specialised survey
Civil Engineer	>>	Specialised survey
Asset Management	>>	Specialised survey

Central disseminator of spatial information

Scan data is multidiscipline – the information rich data set can be manipulated to meet the needs of many specialists. New information can be extracted from the data set at any time during the entire life of a project. If managed properly it becomes a central disseminator of information.

Architect	<<	Scan Data Set
Structural Engineer	<<
Civil Engineer	<<
Asset Management	<<

High-Definition Surveying Systems

The added value to deliverable products has encouraged investment into a new generation of 3D Scanners.

Leica HDS 3000

•	Time of flight laser distance measurement
•	Laser beam is swept vertically by mirrors and rotates around Horizontally Plane
•	Dual windows allow 360º x 270º field of view compared to the tradition 45º x 45º
•	Over 1200 points are measured each second
•	6mm positional accuracy at 50m
•	Point capture up to 200m away
•	User-specified scan area and density, data filtering, scan scripting and automatic target recognition facilitate intelligent data capture
•	Automatically calibrated photo overlays
•	Software allows much larger data sets to be manipulated, necessary from the 20 million plus points created from a 360º scan

Leica HDS 6000

•	Phase difference distance measurement from a continuous beam
•	Laser beam rotates around both horizontal and vertical plane 360º - 310º field of view
•	Ultra-high speed – from 100,000 to 500,000 points per second
•	Accuracy of 5mm at normal range
•	Short range – maximum distance 80m

Case Study - Blackfriars Bridge

The Thameslink Programme is a huge project of track and infrastructure improvements and ABA Surveying are the company putting together a twenty first century dataset to satisfy the design through the core area in London.

Blackfriars Bridge over the Thames is one of a number of major re-modelling projects in the programme and requires a completely new steelwork design to carry the re-aligned permanent way over the original steel arched river spans below.

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Case Study - Maryland Station

Arcing from the overhead lines was detected when trains passed through certain sections of Maryland station . A survey was required of each wire run and bridges/structures to identify the cause of the arcing and to provide plans that would allow for design to rectify the problem.

This large-scale railway survey utilised 3D laser scanning and is illustrated with a stunning fly-through video.

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Case Study - Leyton Orient

A structural survey of the main stand at Leyton Orient was required for alterations to make way for new apartment buildings.

Complex and inaccessible structures, such as the roof detail, were captured from multiple scans taken from various positions ensuring total coverage of the target area. Everything within the target area was measured, no detail missed, and there was no need to revisit the site.

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Video - Blackwall Tunnel

Watch our fly through video of Blackwall Tunnel showing the 3D wire-frame model and the registered point cloud database which the detail was extracted from.

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Video - Scanning at London Bridge

Watch one of our scanners and surveyors at work!.

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Video - Building a 3D Dataset and Extracting a Section

Watch one of our CAD operators slice a 3D point cloud database consisting of over 100 scans and draw the resulting section.

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Video - Creating a 3D wire-frame model from point clouds

Watch how a 3D wire-frame model can be constructed from a 3D point cloud.

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View the evolution to 3D Scanning >>

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