Transactions of the ASAE
Ring-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 ofgalvanized 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 presentedfor increasing withdrawal design valuesfor ring-shank nails.
Nail, Withdrawal, Ring-shank, Threaded, Annular
Skulteti, M J.; Bender, D A.; Winistorfer, S G.; and Pollock, David, "Withdrawal Strength of Ring-shank Nails Embedded in Southern Pine Lumber" (1997). Faculty Publications - Department of Mechanical and Civil Engineering. 31.