- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 21 Nov 2017
Evacuating vulnerable and dependent people from buildings in an emergency FB 52
Evacuating vulnerable and dependent people from buildings in an emergency (FB 52) was written by David Crowder and David Charters and published by BRE on 13 February 2013.
In the attack on the World Trade Center in 2001, more than 1,000 surviving occupants had a limitation that affected their ability to evacuate, including; recent surgery or injury, obesity, heart conditions, asthma, advanced age and pregnancy. An investigation indicated that evacuation flow rates were approximately half those normally observed in fire drills.
There is no simple way to know how long it will take a person with mobility impairments, or a highly-dependent person, to evacuate or be evacuated from a building
FB 52 provides support for designers, owners and managers of buildings so that they can formulate efficient strategies for the effective evacuation of people with mobility impairments such as the elderly or ill, or children from buildings, residential care, healthcare and domestic premises.
Qualitative guidance illustrates the issues that need to be considered when developing an evacuation strategy that is as inclusive as practicably possible. Formulae and data allow quantification of the relationship between the size and nature of a population that may need to be evacuated, the resources that are available to effect evacuation, and the level of fire protection afforded by the building to be evacuated.
The contents of the 32-page guide are:
- Executive summary.
- Available safe egress time and required safe egress time.
- Evacuation of patients.
- Evacuation strategies.
- Points to consider when evacuating mobility-impaired people.
- Evacuation aids and techniques.
- Ensuring continuity of care.
- Appendix A Nature of fire.
- Appendix B Evacuation data.
- Appendix C Vertical evacuation.
- Appendix D Calculation of evacuation time.
 Find out more
 Related articles on Designing Buildings Wiki
- Approved document B.
- BRE articles on Designing Buildings Wiki.
- BRE Buzz articles on Designing Buildings Wiki.
- BRE Buzz.
- Building evacuation.
- Building Research Establishment.
- Emergency lighting.
- Escape route.
- Fire engineering.
- Firefighting lift
- Grenfell Tower.
- Inclusive design.
- Means of escape.
- Older people.
- People with disabilities.
- Protected escape route.
- Unprotected escape route.
- Visual alarm devices - their effectiveness in warning of fire.
Featured articles and news
What U-values are, why they matter and how they are calculated.
The need to ensure that we plan for all aspects of our bio-economy
BSRIA calls on government to reach deeper into the causes of pollution.
George Demetri brings a whole new level of technical knowledge to Designing Buildings Wiki.
Quality professionals need to take an active role in driving the completion process forwards.
The innovations needed to move from rhetoric to realisation.
Creating a sense of place, with radically-low running costs and the highest comfort levels.
A conversation between David Mitchell and Caitlin DeSilvey.
A quick guide to brick sizes.
The Union Street development in Southwark was a passion, as well as a business endeavour.
Do our water quality standards demonstrate to the public that their supply is clean?
A third of practitioners do not have easy access to the knowledge they need.
Sustainable approaches to relief, recovery and reconstruction after a natural disaster.