- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 20 Feb 2021
A chase is a groove or channel cut into an existing layer or substrate to accommodate services such as pipes or cables. Chasing is the act of cutting a chase and is usually undertaken in solid wall or solid floor construction.
The width of the chase will depend on the type and number of the services to be enclosed but typically is not usually wider than 100mm. It is not normal practice to cut chases for large size services such as rainwater or sewage pipes.
Chases can be cut into brick, plaster and concrete-block walls. They can also be cut into the screeds of concrete floors if no provision for pipes or cables was made at the design stage or if an unforeseen requirement has arisen.
Once the required pipe or cable is secured into the chase it can be concealed by plaster, cement mortar or other surface finish. Some services such as power cables, must be housed in protective tubing to separate them from plaster or other enveloping materials.
 Related articles on Designing Buildings Wiki
Featured articles and news
Understanding ethical risks and ensuring ethical behaviour.
A summary of the key announcements.
CIOB response to the Autumn budget.
Training reflects updated guidance in BSRIA BG 29/2021.
Complete list of 2021 winners now available.
Recognising past and present role models for the future.
So why not write something?
LETI publishes guidance for energy efficient home retrofits.
Predictions about adequate post-pandemic IAQ in non-domestic buildings.