3D Laser Scanning Survey with minimum disruption

Safely 3D Laser Scanning whilst residents are on the premises.

London Borough of Islington’s Housing and Development team, were working on a significant planning application for a refurbishment.  To apply for planning permission, they required accurate up-to-date building surveys for a development on Old Street, London, in just 2 weeks.  The properties were also currently occupied.

Hobs were commissioned to undertake a full 3D Laser Scanning survey of the Old Street site. The scope of works included the full exteriors and interiors of the main building structure with special attention paid to the roof as there was no available records of this part.  Hobs spent just five days on site, 3D Laser Scanning the entire building.  Hobs quickly delivered an accurate Revit model of the building, along with elevations for the area.

Teresa Stantucci, project manager at London Borough of Islington, remarked “Many thanks for all your efforts over the last two weeks, particularly over the weekend, to help us meet this deadline, which if we had missed would have delayed the project by a month. Your efforts are very much appreciated.”

The London Borough of Islington has a rich built landscape heritage that is a unique and irreplaceable asset. Design and conservation issues therefore play a significant role in the borough’s planning policies and are an important consideration in the assessment of planning applications.

This refurbishment was of an existing building that contained shops, services and a space for the local youth group.  The Housing and Development Team wanted to cause a minimum amount of disruption, but wanted to record the existing state of the buildings.  Hobs therefore scheduled the 3D Laser Scanning around the community, including the local youth group which meets at set times during the afternoon. The shops and youth group were able to operate as normal throughout the process and the laser scanning caused negligible impact.

The 3D Laser Scanning was completed and accompanied by high-resolution panoramic images to create point-cloud data in full colour. The point-cloud will be used as a 3D record of the existing state of the building, and can be used to take measurements from around the building.

Most importantly, the point cloud was then traced in the 3D software Revit, to create a 3D model of the building. This Revit Model can be used quickly to create any plans or elevations required.

From the model, the architects, Levit Bernstein, determined areas where walls ran out of true and determined the relationships between the interior and exterior views.

London Borough of Islington sent the Revit model to the planning department.  This model resulted in less visits to the site, as it contained all the dimensions of the building and was far more accurate than other survey methods.


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