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Final Deficiency Rept DER 83-15 re Marathon Steel A354 anchor bolt breaking under installation torque after test acceptance.Initially reported on 830318.Analysis concluded bolt torsional failure caused by ductile shear overload.

Accession Number: ML20078H702

Date Released: Wednesday, April 1, 2020

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• ML20078H699 - Final Deficiency Rept DER 83-15 re Marathon Steel A354 anchor bolt breaking under installation torque after test acceptance.Initially reported on 830318.Analysis concluded bolt torsional failure caused by ductile shear overload. (5 page(s), 9/23/1983)
• ML20078H722 - "Failure Analysis of ASTM A-354 Bolt." (20 page(s), 3/31/1983)