Estratégias para inspeção do estado de conservação de fachadas com uso de RPAs e Laser Scanner

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Estratégias para inspeção do estado de conservação de fachadas com uso de RPAs e Laser Scanner

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Title: Estratégias para inspeção do estado de conservação de fachadas com uso de RPAs e Laser Scanner
Author: Bedin, Carla
Abstract: 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.
Description: TCC (graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. Engenharia Civil.
Date: 2019-11-25

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