NZS 3101:2006 Concrete structures standard sets out the minimum requirements for the design of reinforced and prestressed concrete structures. The objective of this standard is to provide structural engineers with a means of designing and verifying the compliance of concrete structures with the New Zealand Building Code.
The Canterbury earthquakes and associated building failures showed that some aspects of the current design standards needed updating. The Canterbury Earthquakes Royal Commission of Inquiry and the Structural Engineering Society New Zealand (SESOC) made several recommendations to amend NZS 3101, and some of the recommendations have now been implemented via Amendment No. 3.
Also, in March 2017, the independent expert panel that undertook an investigation into the performance of the Statistics House building (Wellington), following the November 2016 Kaikoura earthquake, recommended some actions specific to NZS 3101 and this amendment addresses these issues, specifically the impact of beam elongation on precast floor systems, maintaining composite connection of the precast flooring to the in situ topping, and precast floor support details.
The Building regulator is seeking feedback on proposals to amend Verification Method B1/VM1. The consultation runs from 27 September to 20 November 2017.
View the proposals and make a submission on the MBIE Corporate website