PROJETO DE DIMENSIONAMENTO DE PONTOS DE ANCORAGENS PARA ANDAIMES SUSPENSOS

Abstract

This paper addresses the need to size anchor points for suspended scaffolding. Specifically, it deals with the structural analysis of the building where the anchor will be installed, respecting the guidelines of the Brazilian Association of Technical Standards and the Ministry of Labor and Employment. Initially we discussed the requirement of a legally qualified engineer to design and monitor the execution of design of the fastening and support systems, as well as the support structures for suspended scaffolding. After analyzing data from the Social Security Statistical Yearbook (2012) of the Ministry of Social Security, we identified that the accident rate in the sub-activity, Building Construction, is responsible for a considerable number of accidents in the construction sector. The following are the ABNT-NBR / 6494: 1990 guidelines for scaffolding safety, and the MTE-NR-18 that deals with working conditions and environment in the construction industry, as well as the main divergences in both. the standards. For the purpose of loading the scaffolding under the structure, technical specifications are cited provided by the various manufacturers of heavy, light and motorized suspended scaffolding, as well as the characteristics of the anchorages and their fastening systems. Based on these data, we finally present the proposed case study for the design of the anchor points for the use of suspended scaffolding, with due verification of the cross section of the structural element, where the anchorages will be fixed.