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BC Update 164: Residential Guidance Update 7 - technical clarifications and updates

Posted: 2 October 2014

BC Update
Issue 7 of technical clarifications and updates to Repairing and rebuilding houses affected by the Canterbury earthquakes guidance.

This Building Controls Update is a periodic news bulletin for the building sector.

MBIE have released a seventh issue of technical clarifications and updates to the Guidance document ‘Repairing and rebuilding houses affected by the Canterbury earthquakes’, December 2012.

These technical clarifications and updates should be read in conjunction with the Guidance document itself. They have been prepared for professional engineers and others implementing the guidance to provide them with greater explanation, new knowledge, and to respond to new issues that have been raised.

This update provides further clarification and guidance on the following topics: 

  • Boulanger & Idriss (2014) – recognition of the new B&I 2014 liquefaction triggering procedure 
  • Boulanger & Idriss (2014) – probabilistic approach to liquefaction analysis 
  • can you build up the top surface of an existing Type B perimeter fofffundation to create a horizontal surface on which to build a new veneer that is correctly aligned? 
  • for a Type 1 foundation, the MBIE design indicates a pile foundation depth of 350mm. Is there a maximum, or criteria, for the pile embedment depth?

Further technical updates will be developed as the need arises. At a later stage, the information from the clarifications and updates will be incorporated into the next version of the Guidance document Repairing and rebuilding houses affected by the Canterbury earthquakes.

Issue 7 of clarification to the residential guidance

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: