Determination of Ylinen's Parameter for Parallel-Strand Lumber
Publication: Journal of Structural Engineering
Volume 123, Issue 10
Abstract
This study investigates the performance of 38 by 89 mm (1.5 by 3.5 in.) parallel-strand lumber columns. Currently, the 1991 national design specification of the American Forest and Paper Association for columns includes a c factor that describes the interaction of columns between the pure crushing and stability failure modes. For wood material, c is a combination of member straightness, material inhomogeneity, and stress-strain plasticity. The objective of our study is to determine an appropriate c value for parallel-strand lumber. Columns of several lengths are axially loaded to failure. Based on the nonlinear least-squares fit of column results, adjusted to a common moisture content, the most probable value of c for parallel-strand lumber is 0.86. This increased c value is attributed to the greater homogeneity and straightness of the manufactured columns.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 123 • Issue 10 • October 1997
Pages: 1409 - 1414
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Oct 1, 1997
Published in print: Oct 1997
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