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  Mid-rise buildings

Mid-rise buildings are considered to be those that fall within a 10-25 m height range. With increasing densification of living within our major urban areas, the numbers of mid-rise residential or mixed-used commercial/residential buildings is likely to increase significantly to meet housing demand.

Mid-rise buildings are outside the scope of documents such as NZS 3604:2011 Timber-framed buildings and E2/AS1. This means there is a lack of available benchmark solutions that can be used to establish compliance with the Building Code, particularly clause E2 External moisture.

This series of factsheets explains what is different about mid-rise buildings, the elements of good design, demonstrating compliance, water management and common problems.

The factsheets are:

  1. What are they?
  2. Showing compliance
  3. Water management/rainscreen strategies for wall claddings
  4. Exposed issues - reinforcing steel cover
  5. Exposed issues - steel corrosion