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Withdrawal strength of ring-shank nails embedded in southern pine lumberAuthor(s): M. J. Skulteti; D. A. Bender; S. G. Winistorfer; D. G. Pollock
Source: Transactions of the ASAE. Vol. 40, no. 2 (1997): pages 451-456.
Publication Series: Miscellaneous Publication
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DescriptionRing-shank nails are used extensively in post-frame construction due to their superior performance, yet surprisingly little testing has been done on nail sizes above 12d Experience in the post-frame industry suggests that published allowable design values for ring-shank nails may be overly conservative and need revision. The goal of the research reported herein was to characterize the withdrawal strength of ring-shank nails embedded in Southern Pine lumber. Three sizes of galvanized and ungalvanized (bright) ring-shank nails from two manufacturers were studied. Ring-shank nails had approximately twice the withdrawal resistance of smooth-shank nails of the same diameter. Galvanizing slightly reduced withdrawal strength (approximately 8%) due to partial filling of the threads. Nail head pull-through was studied as a possible failure mode. Even allowing for galvanizing and head pull-through, strong evidence is presented for increasing withdrawal design values for ring-shank nails.
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CitationSkulteti, M. J.; Bender, D. A.; Winistorfer, S. G.; Pollock, D. G. 1997. Withdrawal strength of ring-shank nails embedded in southern pine lumber. Transactions of the ASAE. Vol. 40, no. 2 (1997): pages 451-456.
KeywordsNail, withdrawal, ring-shank, threaded, annular, timber connectors, nail holding properties, nailed joints, mechanical fasteners, withdrawal resistance
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