When the stairs have to set up the front room
Fire prevention in public places
More people flow of buildings
Smoke staircase need to set the front room, and the front room need to have positive pressure air supply, staircase and front room door to set fire doors
6.2.1 A class of buildings and buildings with a height of more than 32m in addition to the modular and corridor-style residences and tower-type houses shall be fitted with smoke staircase. 6.2.1.1 Stairway entrance should be located at the entrance, balcony or corridor. - "high-rise civil building design fire safety norms"
7.4.3.1 When the natural lighting and natural ventilation can not be used, the stairway shall be set up in accordance with the provisions of Chapter 9 of this standard smoke or smoke facilities, according to the provisions of Chapter 11 of the standard fire emergency lighting facilities. 7.4.3.2 In the entrance of the staircase should be set up front smoke, open balcony or corridor and so on. Smoke before the room can be used with the fire room before the room. --"Architectural design code for fire protection"
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Area requirements:
6.2.1.2 The area of ??the front room, public buildings should not be less than 6.00 ㎡, residential buildings should not be less than 4.50 ㎡. - "high-rise civil building design fire safety norms"
7.4.3.3 use of the former area: public buildings should not be less than 6.0 square meters, residential buildings should not be less than 4.5 square meters; the use of the former room area: public buildings, high-rise buildings and high-rise warehouse should not be less than 10.0 square meters, Less than 6.0 square meters. --"Architectural design code for fire protection"
The role of the front room:
A. The fire can produce a large number of smoke in the vicinity of the front room off to prevent the smoke into the staircase to ensure that firefighters successfully fight the fire and rescue personnel.
B. Buffer staircase crowded, that is able to accommodate some of the evacuation personnel in the former room for a short time of refuge;
C. Rescue the wounded when you can put a stretcher;
D. Place the necessary fire extinguishing equipment.
