Influence of growth rings position of wood on the determination of its shear strenght parallel to the fibers

Authors

  • Edson Fernando Castanheira Rodrigues Universidade Federal de São Carlos
  • Victor Almeida De Araújo Professor Substituto do curso de Engenharia Industrial Madeireira da Universidade Estadual “Júlio de Mesquita Filho” (UNESP), campus de Itapeva. Engenheiro Industrial Madeireiro., PhD.
  • Felipe Nascimento Arroyo Doutorando em Engenharia Civil do Departamento de Engenharia Civil (Deciv) da Universidade Federal de São Carlos, Estado de São Paulo.
  • João Paulo Boff Almeida Doutorando em Engenharia Civil do Departamento de Engenharia Civil (Deciv) da Universidade Federal de São Carlos, Estado de São Paulo.
  • André Luis Christoforo Departamento de Engenharia Civil (DECiv), Universidade Federal de São Carlos (UFSCar). Engenheiro Civil, PhD, Professor Adjunto.
  • Francisco Antonio Rocco Lahr Departamento de Engenharia de Estruturas (SET), Escola de Engenharia de São Carlos (EESC), Universidade de São Paulo (USP). Engenheiro Civil, PhD, Professor titular.

Keywords:

Resistência ao cisalhamento. Plano longitudinal tangencial. Plano longitudinal Radial. fv0, k/fc0k. Madeiras folhosas.

Abstract

Shear strength parallel to the fibers (fv0) is extremely important for the design of timber structures. Then, due to the lack of information related to a possible variation in the fv0 of hardwood species according to the load application plane in relation to its growth rings/rays, this work performed tests for the determination of fv0 according to NBR 7190-3 (ABNT, 2022b) varying load planes. Thereby, the load was applied on the longitudinal-tangential (LT) and longitudinal-radial (LR) planes of the species of caixeta (Simarouba amara) and roxinho (Peltogyne spp.). Through variance analysis (5% confidence), results did not point to statistical differences between fv0 values when the load plane was changed. Therefore, the fv0 of this species can be determined without significant risk of reduction according to ray/ring orientation. Furthermore, it was determined a ratio of fv0,k/fc0,k equal to 0.23 and 0.38  was determined for roxinho and caixeta, respectively. Thus, this result confirms the need for characterizing unfamiliar wood species when received on construction site, in order to save money and/or for safety reasons.

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Author Biography

Edson Fernando Castanheira Rodrigues, Universidade Federal de São Carlos

Engenheiro Civil pela Universidade de Uberaba. Especialista em estruturas de concreto e fundações pelo IPOG - Uberlândia. Diploma de fluência em língua inglesa pelo CNA idiomas e certificado FCE de Cambridge. Atualmente, Mestrando pela Universidade Federal de São Carlos.

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Published

2023-03-17

How to Cite

RODRIGUES, E. F. C.; DE ARAÚJO, V. A.; ARROYO, F. N.; ALMEIDA, J. P. B.; CHRISTOFORO, A. L.; LAHR, F. A. R. Influence of growth rings position of wood on the determination of its shear strenght parallel to the fibers. Ambiente Construído, [S. l.], v. 23, n. 2, p. 195–212, 2023. Disponível em: https://seer.ufrgs.br/index.php/ambienteconstruido/article/view/122855. Acesso em: 27 apr. 2025.

Issue

Vol. 23 No. 2 (2023)

Section

Artigos

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ISSN 1678-8621

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