Today is FSSD day

Smoke Stop Lobby, Fire Lobby ,Fire Control Centre & Access way:

Any building exceeding 4 storey needs a smoke stop lobby for each staircase on every level. It shall be 3m2 and 6m2 if it is a fire fighting one, with no dimension smaller than 2m.

If naturally ventilated which will be first choice as it is cheapest. Opening needs to be 15% of area and not more than 9m from an airwell;

If building is >24m or has a basement >9m
-2 fire lifts are needed, where one can double up as a PWD.
-A fire lift needs to be placed next to a fire staircase and smoke stop lobby.
-any part should not be > 60m from lift.

For purpose grps 3-8, FCC is needed (min 6m2)
-if GFA > 5000sqm, >24m in height
-best to be located next to fire lift lobby

Lemme try in a point form.
-> 4 storey, every staircase needs a smoke stop lobby
-3m2 or 6m2 if fire fighting, all dimensions >2m
-natural vent opening to be 15% of area
-no other opening within 1.5m horizontally and 3m vertically of natural vent.
-2 PWD holding points on every storey except if only 1 staircase, <15m, < 4storeys; l

*location within smoke stop lobby, at least 500mm away from either doorway
*within staircase, (only for bldg <4storeys; 900x1400mm)
*corridor escape route min 1200

Access way: note access road and access way is different
Overall:
-Height clearance 4.5 m
-Access openings min 850 mm x 1000 mm at every <20 m apart
-Breeching inlet within 18 m
-Access way to be 50 m from hydrant, hence in the middle every 100 m( 50 50 to next)
-turn radius of 3.5 m m u-turn of radius 7 m

Purpose group 3-5,7:
->10 m, coverage of access way based on largest floor plate whether 1/6,1/4,1/2/3/4, island site access
-<10 m, within every 45 m point, pump appliance access road of 4 m width.

Purpose group 6,8,
-extent of access way is by cubical extent
-access way is min 6 m, 4 m width road, and 2 m setback for ladder

exception: 
-if internal staircase is pressurized and <24m to habitable ht
-external exit staircase
-in open sided carpark that is naturally ventilated

not exempted if:
-purpose group exceeds 4 storeys and from purpose group 2 and 7
-internal pressurized stairs >24m habitable height
-stairs is fire fighting staircase next to fire fighting lift

Discharge staircase:
-Direct discharge with no cover
-or with cover, only 50% of staircase, and covered area must not be > 10m, and has to be a direct access ( probably a covered corridor)

Scissor exit staircase:
-between doors at least 7m