Liquefaction lessons - Issue 95
- Liquefaction lessons - Issue 95
- Valid from
- Information provider
- Ministry of Business, Innovation and Employment
- Information type
- CodeWords article
Following a 2-year transition period, Acceptable Solution B1/AS1 will no longer be used for foundations on land prone to liquefaction. Foundations will be consented as a Verification Method or Alternative Solution.
New Zealand is a high earthquake hazard region, and earthquake considerations are integral to the design of the built environment. Liquefaction is a real risk (especially to buildings) as it can result in settlement, tilting, stretching and damage to services and utilities.
This article includes:
- What is liquefaction?
- What are its effects?
- Lessons from Christchurch
- Building Code change to foundations
- Some cost concerns raised
- 2-year transition period