Industry Bulletin 109 – J-bolt (hook rod) tie-down systems

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This bulletin is to provide information to builders, building surveyors, structural engineers and others involved in the design and installation of J-bolt/hook rod tie-down systems. In particular concerns regarding the improper use of 10mm diameter J-bolts based on investigation of lost roofs, laboratory testing and background research.

Building Commission
Last updated 26 Nov 2018

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