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Title: Analysis of K-factor for five-ply plywood
Author: Wangaard, F. F.; Woodson, G. E.; Wilcox, W. R.;
Source: Forest Products Journal 23(4):55-57
Publication Series: Miscellaneous Publication
Description: K-factor has long been used as a modifier of section modulus in the calculation of bending moment for plywood beams. No comparable modification of moment ot inertia is included in current reoommendations for calculating plywood deflection at span-depth ratios of 30:1 or greater. Results of limited testing lend support to the authors' contention that, where "shear" strains are significant, the same K value would be appropriate for predicting both the deflection and bending moment of plywood. If these results are confirmed by further investigation, a method for determining an appropriate value for K based on separate calculations of deflections due to shear and bending is suggested.
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Wangaard, F. F.; Woodson, G. E.; Wilcox, W. R. 1973. Analysis of K-factor for five-ply plywood. Forest Products Journal 23(4):55-57
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