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.