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Smoke Ventilation Requirements in blocks of flats Ground +3 floors PRE-2006 building regs.

Guest Ron

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Hello all, i hope you are well? 


I'm having some real difficulty in finding guidance or regs on what smoke ventilation requirements are needed for pre-2006 purpose built blocks of flats. was it required or only advised? 


Thanks in advance. 

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Required in some form since the early 60's. The official guidance (LGA Guide)  has a timeline of requirements, mostly in CP3 until 1991 when Approved Document B was introduced.

In some cases it was a simple as having openable windows on landings or a permanent vent at the top as oppose to powered auto vents but in anything other than the smallest blocks is been a requirement for decades.

Worryingly too many fire risk assessors are ignorant of this and miss it out of their FRAs

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