Division .3 Design requirementsF1
United Kingdom
- .1Division .1
- .2Smoke detectors to be installed in stairways, corridors and escape routes within accommodation spaces as required by paragraph .2.2 shall be certified to operate before the smoke density exceeds 12,5 % obscuration per metre, but not until the smoke density exceeds 2 % obscuration per metre.
- .3Division .3
- .4Division .4