Effects of leg penetration on the strength of staple joints in selected wood and wood-based materials
1991
Yadama, V. | Syed, B.M. | Steele, P.H. | Lyon, D.E.
Typical upholstered furniture frame joints were constructed using galvanized staples with leg lengths of 1.5, 1.625, 1.75, and 2.00 inches to study the influence of depth of staple penetration on the strength of the joints. Red oak, eastern cottonwood, medium density fiberboard, and oriented strandboard were used in the construction of joints. Oak and cottonwood were conditioned to 8 percent moisture content (MC), and the composite materials had an MC of 6 percent. Joints were tested in withdrawal and shear within 24 hours of construction. The depth of staple penetration into the framing material positively affected both the direct withdrawal and shear strength properties for all joint combinations. Four linear regression equations were developed to predict the withdrawal and shear strengths of a given joint configuration.
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