EMPIRICAL ANALYSIS OF ROOF SLOPE INFLUENCE ON MATERIAL CONSUMPTION IN TIMBER HOWE-TYPE TRUSSES
Author:
MENEZES ISABELLA SILVA,FRAGA IURI FAZOLIN,MORATO DE MORAES MATHEUS HENRIQUE,CHRISTOFORO ANDRÉ LUIS,RESENDE MASCARENHAS FERNANDO JÚNIOR,SCHMITT CAVALHEIRO RAQUEL,ROCCO LAHR FRANCISCO ANTONIO,CHAHUD EDUARDO,MELGAÇO NUNES BRANCO LUIZ ANTÔNIO,FERREIRA DOS SANTOS HERISSON
Abstract
In Brazil, some tile manufacturers have proposed a 10% (5.5°) slope between chords to minimize timber consumption. However, after simulating 21 slopes from 7% (4°) to 27% (15°), it was discovered that the axial strengths are inversely proportional to the slope, creating overly large dimensions for the bars competing for support. The results were obtained using software developed following the guidelines specified in the revised version of the ABNT NBR 7190 (2022) standard. Finally, it was found that the minimum slope until no reinforcement is needed for the string bars is 16% (9°).
Publisher
Pulp and Paper Research Institute
Subject
General Materials Science,Forestry