Have Your Say: Consultation: Building Code Verification Method B1/VM1 update and proposed loop bar ban 2017

Submissions closed at
5pm on Monday, 20 November 2017
Statement of proposal PDF Document 384kb
Submission form Zip archive 47kb


The Ministry of Business, Innovation and Employment (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 3404.1:1997 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 3404.1:1997 are not related to the Statistics House investigation, but are a timely update that will ensure B1/VM1 remains relevant to the steel industry.