Approved Document B
The first set of national building standards was introduced in 1965. The 'building regulations' establish standards that have to be achieved in the construction of buildings. They set out:
- What qualifies as ‘building work’ and so falls under the control of the regulations.
- What types of buildings are exempt.
- The notification procedures that must be followed when starting, carrying out, and completing building work.
- Requirements for specific aspects of building design and construction.
- Approved Document B (fire safety) volume 1: dwellinghouses.
- Approved Document B (fire safety) volume 2: buildings other than dwellinghouses.
The most recent editions were published in January 2013 and came into effect in April 2013. They replaced Approved Document B (2006) which incorporated 2010 amendments. The main changes brought in by the 2013 edition included:
- The general guidance on materials and workmanship and the Construction Products Directive was revised and a reference to Approved Document 7 included.
- The standard for smoke alarms was updated to BS EN 14604 Smoke alarm devices.
The contents of the Approved Documents includes:
- Section B1: Means of warning and escape. This covers fire detection and fire alarm systems as well as means of escape. Volume 2 also includes means of escape from flats, design for horizontal escape in buildings other than flats, design for vertical escape, and general provisions.
- Section B2: Internal fire spread (linings). Covering the classification of wall and ceiling linings, and thermoplastic materials.
- Section B3: Internal fire spread (structure). Loadbearing elements of structure, compartmentation, concealed spaces (cavities), protection of openings and fire-stopping. Volume 2 also covers special provisions for car parks and shopping complexes.
- Section B4: External fire spread. Construction of external walls, space separation, and roof coverings.
- Section B5: Access and facilities for the fire and rescue service. Volume 2 also covers fire mains and hydrants, and the venting of heat and smoke from basements.
- Appendix A: Performance of materials, products and structures.
- Appendix B: Fire doors.
- Appendix C: Methods of measurement.
- Appendix D: Purpose groups.
- Appendix E: Definitions.
- (Volume 1) Appendix F: Standards and other publications referred to.
- (Volume 2) Appendix F: Fire behavior of insulating core panels used for internal structures.
- (Volume 2) Appendix G: Fire safety information.
- (Volume 2) Appendix H: Standards and other publications referred to.
 Related articles on Designing Buildings Wiki
Featured articles and news
BSRIA publish mechanical and electrical maintenance customer satisfaction key performance indicators.
Have a look at our article on the history, practice and techniques of placemaking.
Have a look at the key recommendations from ICE's new report on the digital transformation of infrastructure.
The Gate of Europe, the world's first inclining high-rises, with a lean of 15-degrees.
Why engineers need to keep pace with the challenges and opportunities of the digital transformation of the infrastructure sector.
Have a read of our introductory article on fabric structures; their history, properties and characteristics, and more...
Growing connectivity and what it means for physical infrastructure, disruptive new tech and increasing interdependencies.
Foster & Partners selected as architectural team for new bridge crossings in Ipswich.
Could this strange new concept be the future of skyscraper design?
Designing Buildings Wiki attended a RIBA panel debate on one of London's most notorious planning disputes.
Creating an accessible and inclusive environment – CIC publish new guide.
BRE report on the second day of MIPIM 2017.
Read about the 'Exceptional' sustainable design features of the recent winner of the coveted Your BREEAM Award.