Smoke detector in the staircase residential building

[Guest Pawel]

Hi All, 
Can you advise me in my question? According to the British Standards smoke detector should be placed on each full landing or otherwise in a staircase in a residential building using a dedicated loop? The residential building has 34 levels.

Thank you for help. 

[AnthonyB]

Yes, each floor landing (not half landing) should have a detector. If it's an older building the standards used to have spacing such that only every third floor would be covered, but that's from a long time ago.

The detectors may not be part of a fire alarm system but a smoke control system in which case depending on the system design could differ from the above.

[Guest CWE]

Hello @AnthonyB, please could you reference where this is in building regulation/guidance?

Many thanks!

 

[AnthonyB]

BS5839 Parts 1 & 6 for spacing, Building Regulations Approved Document B regarding only needing detection for smoke control, NFCC Simultaneous Evacuation guidance for where a purpose built block of flats does need an alarm system as well as LACORS for non building regs compliant conversions & many more sources!