Article
 

Characterizing perpendicular-to-grain compression (C⊥) behavior in wood construction

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/t435gf936

Descriptions

Attribute NameValues
Creator
Abstract
  • Current compression perpendicular-to-grain (C⊥) design values for wood members are based on mean stress obtained from ASTM D143 specimen. The standard ASTM test with metal on wood bearing has limited applicability in modern construction assemblies with C⊥ loading scenarios. Previous work has shown that end-bearing conditions and wood-on-wood C⊥ bearing is a more severe case as opposed to load applied over central area and metal-on-wood bearing. This study evaluated C⊥ behavior of typical assemblies used in construction, in which members experience C⊥ stresses near their longitudinal-end through wood-on-wood contact. These included assembly of the bottom chord of a truss bearing on the top plate of a wall (BC assembly) and assembly of the compression chord of a shear wall bearing on the bottom plate (BP assembly) of a wall. Three different BC assemblies were tested with varying aspect ratios (height/width) of the bottom chord (B.C.) member. For each test assembly, paired ASTM tests of the main member (bottom chord member in BC tests, and bottom plate member in BP tests) were conducted. The assembly stresses at 1 mm deflection were always lower than the corresponding ASTM stresses at the same deflection. Due to varying assembly depths, 1 mm deflection was a poor criterion for determining C⊥ stress values. For B.C. members, when loaded tangentially, they buckle in the direction of annual ring curvature. High aspect ratios accentuate this effect. Expectedly, the tendency to buckle and the probability of total failure in the assembly increase with increasing aspect ratio. This behavior was not observed in the ASTM tests.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Basta, Craig Thomas, Rakesh Gupta, Robert J. Leichti, et al. 2011. Characterizing perpendicular-to-grain compression (C⊥) behavior in wood construction. Holzforschung. 65(6): 845-853. Retrieved 15 Nov. 2019, from doi:10.1515/HF.2011.104
Journal Title
Journal Volume
  • 65
Journal Issue/Number
  • 6
Rights Statement
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details Rakesh_24.pdf 2017-07-26 Public Download