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Abstract:
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The maintenance of building facades is responsible for ensuring that their components
remain functional for the intended lifespan. It also helps to preserve the indoor space,
thus ensuring the comfort of its occupants. Maintenance processes are often overlooked
and it’s even more alarming when it comes to tall buildings and those with complex geometry, especially as they involve unusual problems, usually related to their shape.
Thereby, the inaccuracy problems of the data generated for refurbishmets is increasing
and, with the increase of the proportions of the buildings, verified in the last decades,
the challenge becomes even more pertinent. Conventional means of monitoring the
state of these buildings are mostly person-guided visual inspections, which are time
consuming and inaccurate. Therefore, this research has the main objective of developing strategies for inspection of façades using RPA and Laser Scanner, bringing greater
agility, precision and time reduction in the exploratory inspection process, seeking to
make the simplest and most correct technique to the point that preventive maintenance
is carried out at the right time and in the best possible way. RPAs and laser scanners
are considered of recent use in research in Brazil. Because these are new processes,
together with them comes the lack of published studies. The adopted methodology comprises the case study of the building of the Department of Architecture and Urbanism
of the Federal University of Santa Catarina: the case studies were conducted through
interviews with companies and professionals working in the building maintenance and
restoration segment in Florianópolis metropolitan area, field data survey using RPA and
Laser Scanner, processing and digitizing the data collected for each of the equipment in
order to generate three-dimensional reconstructions, determination of the best results,
generation of orthoimages and finally the data analysis through the process of segmentation and classification of pixels. As a result, the survey found that the companies’
level of maturity for adopting new strategies and the correct exploitation of their full
potential is still far from ideal, even though some companies are already working with
technology inspection equipment. In addition, inspections related to the RPAs and laser
scanner proved to be effective techniques, mainly due to the possibility of analyzing
larger areas instead of specific points, reaching with great precision, without the need
of large spaces for equipment rental and also having the advantage of having access
to different areas quickly, when using RPAs. The presented techniques were able to
identify the visually detected pathologies, demonstrating that they can be used in the
mapping conservation state in facades, significantly improving the understanding of the
damage. |
