Cyclic Testing of Narrow Plywood Shear Walls

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The ATC-R-1 report, Cyclic Testing of Narrow Plywood Shear Walls, was developed with funding from the ATC Henry J. Degenkolb Memorial Endowment Fund. (Published 1995, 64 pages)

ABSTRACT: This report documents ATC's first self-directed research program: a series of static and dynamic tests of narrow plywood wall panels having the standard 3.5-to-1 height-to-width ratio and anchored to the sill plate using typical bolted, 9-inch, 5000-lb. capacity hold-down devices. The report provides a description of the testing program and a summary of results, including comparisons of drift ratios found during testing with those specified in the seismic provisions of the 1991 Uniform Building Code. The report served as a catalyst for changes in code-specified aspect ratios for narrow plywood wall panels and for new thinking in the design of hold-down devices. It also stimulated widespread interest in laboratory testing of wood-frame structures.

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ATC-RI info (ATC-RI_toc.pdf, 211 Kb) [Download]