Estruturas de concreto armado sob ação de incêndio: aplicação da NBR 15200 (ABNT, 2012) no dimensionamento estrutural de um edifício de 17 pavimentos utilizando o software CAD/TQS

Abstract

Until the end of the 1960s, the standardization regarding fire safety in buildings in Brazil was lenient, with its importance brought to the fore after major fires that occurred in the 1970s. Despite the normative advances that have occurred in recent decades, the area lacks studies that clarify the real influence and impact of the application of these standards on the structural safety of buildings and on the design and execution processes of projects. This work explains about the design of reinforced concrete structures under fire action and performs the structural design of a 17story reinforced concrete building under fire action based on NBR 15200 (ABNT, 2012) and using the software CAD/TQS. The structural dimensioning of the building was carried out based on NBR 6118 (ABNT, 2014), with subsequent verification of the structure under fire and structural resizing according to the criteria established in NBR 15200 (ABNT, 2012). Subsequently, the modifications that occurred in the project due to the application of NBR 15200 (ABNT, 2012) were analyzed, noting the improbability of the application of that standard to cause significant structural changes in residential buildings.