DBPapers
DOI: 10.5593/SGEM2016/B22/S10.133

THE USE OF TERRESTRIAL LASER SCANNING FOR THE DETECTION OF STRUCTURAL DEFECTS OF BUILDINGS

J. Pawlowicz
Thursday 8 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-59-9 / ISSN 1314-2704, June 28 - July 6, 2016, Book2 Vol. 2, 1043-1050 pp

ABSTRACT
The laser scanning technology provides information that is useful in managing
investments, measuring distances, volumes and surface areas of analysed elements.
It can be applied in construction and reconstruction of buildings, transport
infrastructure etc. at all stages - from earthworks to carrying out an investment to an
inspection of completed works and preparation of the as-built documentation. There are many publications that address the issue of irregularities in structural elements of
buildings and the use of various tools for examining them. However, each new object
tested and each new method used casts a new light on the issue of detecting structural
defects of buildings.
This paper presents a study carried out by means of the ScanStation C10 laser scanner by Leica, focusing on reviewing the accuracy of the results: fidelity to reality obtained by means of a point cloud, modelling precision, etc. It also presents a summary of errors resulting from laser scanning and evaluates the suitability of terrestrial laser scanning for analysing structural elements of buildings.
The conclusions indicate the advantages and disadvantages of laser scanning.
Unfortunately, it is hard to say for certain that the laser scanning technology is the best
method to use for the purposes described herein. The decision as to its application
depends on the accuracy expected by the user. In the case of conducting a survey of a
building or structure an error of 5 mm is acceptable, however, as regards research
requiring high precision, such as deformation and displacement analyses, the laser
scanning technology is merely an option.

Keywords: structural deformation, point cloud, 3D laser scanner