An excellent example showing the efficiency of ground-based laser scanning technology in the MobiScan mobile laboratory is the work performed by Trimetari specialists in December 2011 on architectural measurements of a complex of residential buildings in Murmansk.
The need to restore the facades of the buildings due to their technical condition and categorisation as monuments required careful measurements and identification of losses. The buildings are not distinguished by an abundance of decoration or complexity of forms, but their location (the central street of Murmansk), constant traffic and pedestrian flow, as well as the closure of facades with green plantings, required an ambiguous approach to solving the task. In addition, the scanning was carried out in winter, at sub-zero temperatures and in polar night conditions.
Some of the stations (3D scanner standing points) were made using a telescopic mast. This allowed not only to move quickly from station to station without restarting the device and to get rid of the influence of extraneous noise, but also to take pictures of facades from different heights, which in turn eliminated the problem of facades being covered by trees. In addition, manual roof measurements are no longer necessary, as the installation of the scanning system at the top point makes it possible to scan roof slopes.
Working in comfortable conditions for people and equipment is also an important factor in improving labour efficiency, especially when it comes to the Arctic Circle.
As a result, the entire field scanning phase (5 buildings with a total facade area of more than 13,000 square metres) took less than a week, given that all elements of the facade artwork were taken at maximum density. The result of the desktop processing was a complete set of measurement drawings for each of the five buildings, including facade drawings, roof plans, fragments, details and templates.