Inner room definition
Approved document B, Fire Safety, Volume 1 Dwelling houses, defines an 'inner room' as a:
'Room from which escape is possible only by passing through another room (the access room).'
An inner room is at risk if a fire starts in the other room (the access room - that is, a room through which the only escape route from an inner room passes).
This situation may arise with open-plan layouts and galleries.
Such an arrangement is only acceptable where the inner room is:
- A kitchen.
- A laundry or utility room.
- A dressing room.
- A bathroom, WC, or shower room.
- Any room on a storey that is a maximum of 4.5m above ground level which is provided with an emergency escape window as described in paragraph 2.10.
- A gallery that complies with paragraph 2.15.
A room accessed only via an inner room (an inner inner room) is acceptable when all of the following apply:
- It complies with paragraph 2.11.
- The access rooms each have a smoke alarm (see Section 1).
- None of the access rooms is a kitchen.
[edit] Related articles on Designing Buildings Wiki
- Approved documents.
- Automatic release mechanism.
- Door energy rating.
- Fire detection and alarm systems.
- Fire door.
- Fire Door Inspection Scheme.
- Fire Prevention on Construction Sites.
- Fire protection engineering.
- Joint fire code.
- Separating floor.
- The Regulatory Reform (Fire Safety) Order 2005.
- Unprotected escape route.
- Visual alarm devices - their effectiveness in warning of fire.
Featured articles and news
Download your free guide.
Four new types of prior approval for solar developments
Online Planning Portal application types from 5 September.
Election fails to spark construction industry revival
Contract awards and planning; post election.
Making diversity and inclusion easy for SMEs
The CIOB tool for companies with limited resources.
Sustainable Futures: Redefining Retrofit for Net Zero Living
BSRIA Briefing 2024, initial speakers announced.
Looking back at the UK's first Passivhaus leisure centre
Reflections on St Sidwell’s Point with CIAT.
A-Level results and electrical apprenticeships
Electrical Skills Index highlights areas with skills shortages.
One of the world's more unusual drive-throughs.
A quick introduction.
Hadrian's Wall Path and the national trails
The trails are heritage assets in their own right.
Articles on timely advice and hydraulic lime.
Building Designers Association of Australia
CIAT and BDAA sign Memorandum of Understanding.
Built Environment Inclusive partners issue statement committed to inclusion.
Building regulation requirements can have unintended consequences.
CIOB announces 2024/25 vice president
Sustainability champion Professor Saul Humphrey.
Accelerating towards a net-zero built environment.