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Technical reports published for the Ministry

Reports on building-related topics published for the Ministry.

Review of the Building Code system: Options for future development

Review of the Building Code System:  Options for future development report cover.

What sort of publication it is: Downloadable document
Who it's for: Everyone who is interested in the Building Code System including the general public and in particular the building and construction sector 
What it contains: A review of the Building Code System to identify the strengths and weaknesses of it and options to improve it to better reflect the intent of the Building Act 2004. The review was commissioned as a think piece to encourage discussion rather than as a proposal for change.

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Indicative cost benefit analysis model for earthquake-prone building review

Indicative Cost Benefit Analysis Model for Earthquake-Prone Building Review

What sort of publication it is: Powerpoint presentation
Who it's for: The Ministry of Business, Innovation and Employment Review of Earthquake-Prone Building Policy, prepared by Martin Jenkins and Associates
What it contains: Indicative economic modelling on the costs and benefits of strengthening to different levels of seismic capacity.

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A risk framework for earthquake-prone building policy

What sort of publication it is:  Downloadable document
Who it's for: Everyone who may wish to respond to the consultation, including the public, experts and practitioners
What it contains: A discussion around the risk framework for managing earthquake-prone buildings, prepared by UK risk management expert Tony Taig for the MBIE review of earthquake-prone building policy.

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Scion research reports on remedial treatments for timber in leaky buildings

Scion Research Reports cover.

What sort of publication it is: Downloadable colour document
Who it's for: Those involved in assessing the condition of leaky buildings and designing repairs to timber framing affected by decay.
What it contains: The Department commissioned Scion to carry out research into the efficacy of two site applied brush on preservative treatments for timber. These reports describe the testing methodology and give the results of the testing to date.

The research involved:

  • Testing the effectiveness of boron glycol and copper naphthenate applied on 1, 2, 3 and 4 faces of timber infected with two types of decay
  • Investigating a technique to get preservative to hidden surfaces between adjacent timber members

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Stadium Southland roof collapse report - StructureSmith Ltd, Hyland Fatigue and Earthquake Engineering Ltd

Stadium Southland Roof Collapse Report cover.

What sort of publication it is: Downloadable Colour Document
Who it's for: Building designers, building officials, structural steel fabricators and constructors
What it contains: An investigation commissioned by the Department into the collapse of the Stadium Southland roof on 18 September 2010 following a heavy snow fall The investigation involved:

  • determining the snow loading
  • site visits
  • reviewing drawings and specifications
  • laboratory examination and testing of the building remnants
  • various structural analyses to develop an understanding of the building response and to identify the critical structural weaknesses
  • identifying the cause/s of the roof collapse.
  • Download the Stadium Southland Roof Collapse Report [PDF 7.8 MB, 130 pages]

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Snow storm data collection: Mobilisation in September 2010 - NIWA

Snow Storm Data Collection cover.

What sort of publication it is: Downloadable Colour Document
Who it's for: Building designers and building officials
What it contains: A report commissioned by the Department on a snow storm and consequential ground snow loading between 17 September 2010 and 19 September 2010 that resulted in extensive damage to a number of buildings in Invercargill, including the collapse of Stadium Southland roof. The snow storm was a significant event in terms of observed snow ground loading, but none of the observed values exceeded the post 2008 minimum ground snow load ( at the ultimate limit state) of 0.9 kPa for Canterbury, Otago or Southland.

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Review of design and construction of slender precast concrete walls

Review of design and construction of slender precast concrete walls cover.

What sort of publication it is: Black and white book
Who it's for: Department of Building and Housing technical operations staff
What it contains: The results of a review into the design and construction of slender precast concrete walls (SPCWs) in New Zealand. The main topics it covers are:

  • an introduction to the review
  • the objectives of the review
  • the methodology of the review
  • the results of the review
  • significant concerns about SPCWs
  • research on SPCWs
  • Standards development and a CCANZ bulletin about SPCWs
  • conclusions and recommendations
  • references and appendices.

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