- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 15 Jun 2018
At certain stages in the design process, packages of information are prepared for the client to approve, and once this approval has been given, the design is ‘frozen’ and change control procedures are introduced to ensure that no more changes are made without the permission of the client.
However, there can be an intermediate stage before design freeze, known as ‘design chill’ or ‘part freeze’.
At design chill, all aspects of the design may evolve, although formal controls are placed on any changes to issued design documents. This might mean that interim change may occur within particular aspect of the works, which, when finalised, are formally reviewed and incorporated into the design.
Parts of a design can be chilled whilst permitting other aspects to continue to develop; for example, the civil aspects may be chilled, allowing M&E design to continue in the full knowledge that there will be no change to the structure.
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
How to write them and what they should include.
Five outstanding aspects of the profession.
The seismic strengthening of historic churches.
Results show guarded optimism and payment concerns.
Noteworthy navigable aqueducts.
Technology is making remote work a reality.
Carefully placed structures add drama to pastoral vistas.
Report provides actions required by 2030 to achieve a zero carbon economy.
What type of cool roof is most suitable?
Active Travel programme prioritises cyclists and pedestrians.
CIAT issues caution for use of new standard.
Industry leaders discuss climate change, the economy and other influences.