Dimensionamento de paredes de alvenaria estrutural em situação de incêndio pelo método tabular do Eurocode 6 part

Abstract

The structural masonry is a construction system strongly used in Brazil because it presents itself as a more economical and rationalized alternative to combat the growing housing shortage. Despite its importance in the construction scenario, there is still no national standardization concerning the design of structural masonry in fire situations, so that the São Paulo State Fire Department recommends the use of international standards such as the european standard Eurocode 6 - Design of masonry structures - Part 1-2: General rules - Structural fire design (2005). In this exceptional condition, that is, of high temperature, it is necessary that the structural elements remain supporting the loads to which they were designed for a certain period of time in order to allow the rescue and safety of human lives. Thus, the present work aims to present a calculation script to the fire design of first floor walls of a four-storey masonry building, by applying the tabular method proposed in Eurocode 6 Part 1-2:2005, in order to obtain the minimum thickness of the masonry wall, according to the Required Time of Fire Resistance (TRRF). The results obtained showed that, considering the REI criterion and TRRF = 60 min, all the walls of the first floor comply by the minimum thickness ranges specified by Eurocode 6 Part 1-2:2005, being assured, thus, its fire resistance to the chosen TRRF.