Student 'cluster' accomodation is often a mixed system.
These are often set up like the following:
A 8-9 storey building, protected FF stairs etc where they need to be. Off these stairs you have a protected corridor. FD30S (Sometimes FD60S) doors lead from this corridor into a "cluster". You pass through that FD30S/FD60S door and you are in a common area, or another mini corridor running parallel to the main corridor, that has 4 or 5 en-suite bedrooms off it and a kitchen, all FD30S doors.
Each of these clusters of 4 or 5 is classed as a seperate dwelling, they have their own part 6 system in the common areas, the kitchen and the bedrooms. All SD apart from HD in the kitchen. This alarm only serves to warn the people in that cluster in the event of an alarm activation in the cluster, and they have the facility to silence/reset their own alarm. Neighbouring clusters stay put if this system activates..
Now outside the cluster you have a Pt 1, generally an L2 or L3 system, but that entails 1 HD that belongs to this system being situated in the common area/mini corridor. Only the operation of that HD or any other part of the pt 1 will alert security, and may initiate an evacuation.
Civvy would there be any ventilation to the staircase lobbies as per the design of flats in this scenario?
