Research Article
Mar 1968
Surface Treatment of High-Strength Bolted Joints
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VIEW THE REPLYAuthors: George C. Brookhart, F.ASCE, Iqtidar H. Siddiqi, and Desi D. Vasarhelyi, F.ASCEAuthor Affiliations
Publication: Journal of the Structural Division
Volume 94, Issue 3
Abstract
The effect of galvanizing on the ASTM A325 and A490 high-strength bolts and the performance of bolted joints under static loads in which the faying surfaces were galvanized, cold zinc painted, metallized, treated with vinyl wash or with another rust-preventing paint, were studied. Comparisons were made with nongahranized bolts and with joints with untreated mill-scale surfaces. The torque necessary to tighten the high-strength bolts is increased by galvanization, but this effect may be almost eliminated by the use of power torquing, or by lubrication. The hot dip galvanizing gave an average coefficient of friction of 0.23; the other surface treatments gave values between that of dry mill-scale and that of sandblasted metal surfaces.
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Published In
Journal of the Structural Division
Volume 94 • Issue 3 • March 1968
Pages: 671 - 681
Copyright
© 1968 American Society of Civil Engineers.
History
Published in print: Mar 1968
Published online: Feb 1, 2021
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Authors
Affiliations
George C. Brookhart, F.ASCE
Research Asst., P.H. Hostmark and Assoc., Cons. Engrs., Seattle, Wash.
Iqtidar H. Siddiqi
Research Asst., now Asst. Director, Water and Power Development Authority, Lahore, West Pakistan
Desi D. Vasarhelyi, F.ASCE
Prof. of Civ. Engrg., Univ. of Washington, Seattle, Wash.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.