An ageing residential block of flats was scheduled by the landlords for refurbishment and improvements, particularly as it occupied an exposed hilltop coastal location. Part of this work involved replacement of windows and cladding the exterior of the building.
In order to cost effectively manufacture the refurbishment materials, the contractor needed an accurate model of the building, including an analysis of wall verticality.
A Faro Focus 120 laser scanner was used to capture 3D point cloud data for all external elevations of the building. This was combined with a topographic survey and georeferenced survey control was used to tie the datasets together.
The processed 3D point data was imported into AutoCAD and combined with the other survey data. From this, 2D elevation drawings were produced. The “volume mesh” functionality of Topcon’s Scanmaster software was used to fit planes to various external walls and assess the deviation from theoretical vertical planes with a high degree of accuracy.
Result & Deliverables
The survey successfully generated the required deliverables to enable works to proceed on time. The client was provided with the following:
2D elevation drawings
3D georeferenced point cloud
Ortho elevation photos
Plots of wall verticality variations