Comparative Dimensioning of Plane Timber Truss by ABNT NBR 7190:1997 Method and ABNT NBR 7190-1:2022 Method
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Data
2022-01-01
Autores
Menezes, Isabella Silva
Fraga, Iuri Fazolin
Mascarenhas, Fernando Júnior Rezende
Moraes, Matheus Henrique Morato de
Cavalheiro, Raquel Schmitt
Aquino, Vinícius Borges de Moura
Santos, Herisson Ferreira dos
Molina, Júlio Cesar [UNESP]
Lahr, Francisco Antonio Rocco
Christoforo, André Luis
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Resumo
Wood, a renewable source and a material with excellent mechanical properties, is one of the oldest materials used in civil construction. In Brazil, its use is widespread in roof structures in the form of plane trusses. Given the Brazilian context of the growing presence of wood in structural systems, in addition to the normative updating processes, this study presents a comparison between calculation methods and possible increases in material consumption of wood for roof structure. The design methods compared are according to the recently published standard ABNT NBR 7190-1 (2022) and its previous version ABNT NBR 7190 (1997). The results were obtained via iTruss software, which includes linear-elastic structural analysis by the finite element method (FEM). It was concluded that the ABNT NBR 7190-1 (2022) presents a conservative dimensioning in relation to the previous version of 1997, favoring safety. However, there were no significant increases in wood consumption, demonstrating the efficiency of the revised version.
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Cover structures, Dimensioning, Wood consumption
Como citar
BioResources, v. 17, n. 3, p. 5207-5214, 2022.