Scattered doors with scattered access mainly refer to the doors directly leading to scattered walkways in each room in the building, or the doors set on the exit.

Basic principle: the setting of scattered doors requires that the scattered doors will not be blocked or unable to be dispersed due to the scattered doors in the process of personnel dispersion. For the scattered doors leading to the indoor area and the scattered doors of rooms requiring satisfactory fire separation requirements, fire doors shall be selected.

I. setting mode and opening direction

1. For the scattered doors of civil buildings and plants, the swing door open to the scattered direction shall be selected. Sliding door, rolling shutter door, hanging door, revolving door and folding door shall not be selected. Except for class A and class B production workshops, the opening direction of the scattered door of the room with a number of less than 60 people and an average scattered number of less than 30 people per door is unlimited. （6.4.11）

The front room of scattered staircase, elevator room or smoke proof staircase or the door of shared front room shall be swing door. The side sliding door, rolling shutter door, revolving door or electric door, including the door in the curtain, cannot be ensured and quickly dispersed when the crowd is urgently dispersed, so it is not allowed to be used as a dispersed door.

2. The scattered door of the warehouse shall be the side door open to the scattered direction, but the sliding door or rolling shutter door can be selected on the outside of the wall of class C, D and e warehouse floors. （6.4.11）

3. When the doors open to scattered stairs or scattered stairwells are open, the width of the landing shall not be reduced. （6.4.11）

4. In densely populated places, the scattered doors that need to control the random access of personnel at ordinary times and the external doors of residences, dormitories and apartments equipped with access control system shall ensure that they can be easily opened from the inside without using any tools such as keys in case of fire, and signs with application tips shall be set in a prominent direction. （6.4.11）

II. Fire performance requirements

1. Generally, except for the rooms with satisfactory fire separation requirements, there are no special fire protection requirements for the scattered doors leading to the scattered walkways. Conventional glass doors and wooden doors can be used.

2. Equipment rooms and special rooms with satisfactory fire separation requirements, scattered doors leading to scattered walkways, and satisfactory fire performance requirements, such as:

13.4.5 fire doors (1.4, 2.5) or multi-way ventilation doors (1.4, 2.5) shall be built in the boiler room, oil filled transformer room and gas-fired transformer room, which can be filled with oil and gas (12.4.5);

2. Class B fire doors (6.2.7) shall be selected for the doors in the fire control room, fire extinguishing equipment room and other equipment rooms;

3. The fire resistance of the dispersion door in the gas fire extinguishing protection area should not be less than 0.5h. （3.2.5）

4. When catering, shops and other commercial equipment are connected through a covered pedestrian street, and the construction on both sides of the pedestrian street needs to be dispersed by the pedestrian street, the fire resistance of the enclosure components on the side facing the pedestrian street of the shops built on both sides of the pedestrian street should not be less than 1.00h, and the solid wall should be selected, and the doors and windows should be class B fire windows and doors. （5.3.6）

5. Class B fire doors shall be selected for the doors set on the walls of halls and rooms and the doors connected with other parts of the building. (5.4.9)

3. Class B fire door is generally required for the scattered door leading to the indoor area.

"Indoor area" generally includes staircase, front room, exile floor, exile walkway, etc. scattered doors open to these parts generally need to use class B fire doors;

1. Class B fire door shall be selected for the scattered door leading to the front room of smoke proof staircase and the front room leading to smoke proof staircase.

Note: the total construction area is more than 20000m? For underground or semi underground stores, smoke proof staircases shall be selected in adjacent areas. When connected, the doors of smoke proof staircases shall be fireproof doors (5.3.5).

2. For high-rise buildings, densely populated public buildings, densely populated multi-storey class C plants, class A and class B plants, the doors of closed staircases shall be class B fire doors and shall be open to the scattered direction; For other constructions, two-way spring door can be selected (fire door is not required). （6.4.2）

3. The outdoor staircase can be used as smoke proof staircase or closed staircase. The door leading to the outdoor scattered staircase shall be class B fire door. （6.4.5）

4. The doors (including the front room door) connecting the scattered staircase and the exile floor (room) need to use class B fire doors.

5. The scattered door leading to the smoke proof front room of the exile corridor shall be a fire door, and the door leading to the exile corridor from the smoke proof front room shall be a class B fire door.

4. General doors can be selected for scattered doors leading to outdoor areas, except overpasses and corridors.

"Outdoor area" includes outdoor aboveground, accessible roofs and platforms that meet dispersion requirements and have direct access to aboveground equipment, as well as overpasses and corridors that meet the requirements of article 6.6.4 of the building code.

1. Class B fire doors shall be selected for the doors opening to the overpass and corridor.

2. There are no special fire prevention requirements for doors opening to other "outdoor areas", such as scattered doors directly opening to the outdoor ground, accessible roofs and platforms that meet the dispersion requirements and directly reach the above ground equipment. Example:

2.1 doors of scattered staircases leading to the outside;

2.2 the door leading from the front room of the extended closed staircase or the extended smoke proof staircase to the outside;

2.3 doors of various equipment rooms leading to the outside, such as fire pump room, fire control room and other doors leading to the outside;

2.4 scattered staircases, roof fan rooms, equipment rooms, etc. are directly connected to the doors on the roof.

Article source: fireproof glass doorhttp://www.hyptw.cn/