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

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Our offices will close from Monday 24 December 2018 and will reopen on Thursday 3 January 2019. For urgent assistance during that period you can contact us.

This publication is for: 
Builder

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
Bulletin
Last updated 26 Nov 2018

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