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BC Update 223: Consultation opens on B1/VM1 and loop bar connections

Posted: 27 September 2017

BC Update
MBIE is seeking your feedback on proposals to amend Verification Method B1/VM1 and to ban loop bar connections of flange-hung double-tee precast flooring. The consultation runs from 27 September to 20 November 2017.

MBIE is proposing to:

  • update Verification Method for B1 Structure B1/VM1 to cite the latest version of NZS 3101:2006 Concrete Structures Standard: Part 1–The Design of Concrete Structures, (ie Amendment 3)
  • update Verification Method for B1 Structure B1/VM1 to replace sections of NZS 3404 Part 1:1997 Steel Structures Standard to reflect current practice for steel fabrication and construction
  • ban the use of the loop bar (also known as ‘pigtail’) connection detail associated with the support of precast concrete flange hung double-tee flooring units.

The proposed amendments are part of MBIE’s response to the investigation into the performance of Statistics House in the 14 November 2016 Hurunui/Kaikōura earthquakes and recommendations from the Canterbury Earthquakes Royal Commission.

Modifications to the referencing of NZS 3404: Part 1:1997 are not related to the Statistics House investigation, but are a timely update that will ensure B1/VM1 remains relevant to the steel industry.

View the proposals and make a submission on the MBIE Corporate website

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This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: