Separated part of a building
Approved document B, Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), defines a separated part (of a building) as:
'Part of a building that is separated from another part of the same building by a compartment wall. The wall runs the full height of the part and is in one vertical plane. (See Appendix D, Diagram D5.)'
[edit] Related articles on Designing Buildings Wiki
- Approved Document J.
- Cavity barrier.
- Compartment floor.
- Compartment wall.
- Escape route.
- External fire spread, Supplementary guidance to BR 187 incorporating probabilistic and time-based approaches.
- Fire and rescue service.
- Fire compartment.
- Fire damper.
- Fire detection and alarm systems.
- Fire resistance.
- Fire risk assessments and historic buildings.
- Fire safety design.
- Fire-separating element.
- Fire spread.
- Fire-stopping.
- Firefighting lift.
- Firefighting route.
- Installing fire doors and doorsets (GG 86).
- Joint fire code.
- Means of escape.
- Protected escape route.
- Protected stairway.
- Unprotected escape route.
Featured articles and news
A case study and a warning to would-be developers
Creating four dwellings... after half a century of doing this job, why, oh why, is it so difficult?
Reform of the fire engineering profession
Fire Engineers Advisory Panel: Authoritative Statement, reactions and next steps.
Restoration and renewal of the Palace of Westminster
A complex project of cultural significance from full decant to EMI, opportunities and a potential a way forward.
Apprenticeships and the responsibility we share
Perspectives from the CIOB President as National Apprentice Week comes to a close.
The first line of defence against rain, wind and snow.
Building Safety recap January, 2026
What we missed at the end of last year, and at the start of this...
National Apprenticeship Week 2026, 9-15 Feb
Shining a light on the positive impacts for businesses, their apprentices and the wider economy alike.
Applications and benefits of acoustic flooring
From commercial to retail.
From solid to sprung and ribbed to raised.
Strengthening industry collaboration in Hong Kong
Hong Kong Institute of Construction and The Chartered Institute of Building sign Memorandum of Understanding.
A detailed description from the experts at Cornish Lime.
IHBC planning for growth with corporate plan development
Grow with the Institute by volunteering and CP25 consultation.
Connecting ambition and action for designers and specifiers.
Electrical skills gap deepens as apprenticeship starts fall despite surging demand says ECA.
Built environment bodies deepen joint action on EDI
B.E.Inclusive initiative agree next phase of joint equity, diversity and inclusion (EDI) action plan.
Recognising culture as key to sustainable economic growth
Creative UK Provocation paper: Culture as Growth Infrastructure.






















