Capacity of oriented strandboard joints with overdriven nails

• Published in: Forest products journal 2009-04, Vol.59 (4), p.53-60
• Main Authors: Fonseca, Fernando S, Rabe, Justin A
• Format: Article
• Language: English
• Subjects: Analysis; Capacity; Construction; cyclic loading; depth; Energy dissipation; Fasteners; Fatigue; Fatigue testing machines; Forest products; Forest products industry; Investigations; Joints; joints (wood); loads; Materials; nails (equipment); oriented strandboards; Plywood; Properties; Studies; testing; Wood products
• ISSN: 0015-7473; 2376-9637

This article presents the results of a testing program to evaluate the capacity of oriented Strandboard joints with overdriven nails. Several single nail wood joints were tested using a cyclic loading procedure. Joints were assembled with 11 mm sheathing panels, 38 by 89 mm wood members, and gun-driven 2.9 mm diameter by 60.3 mm long nails. Nails were flush-driven and overdriven 1.6, 3.2, and 4.8 mm. Results indicate that any level of nail overdriven depth will reduce the capacity of a joint. Compared to flush-driven joints, joints with nails overdriven 1.6, 3.2, and 4.8 mm experienced 9, 13, and 22 percent loss in load capacity, respectively. Approximate reductions in ultimate displacements were 22, 41, and 45 percent and 20, 40, and 44 percent in cumulative energy dissipation for joints with nails overdriven 1.6, 3.2, and 4.8 mm, respectively. Initial stiffness decreased 20 percent for joints with 1.6 mm overdriven nails but increased 8 and 19 percent for joints with 3.2 and 4.8 mm overdriven nails, respectively. [PUBLICATION ABSTRACT]