Tongxiao

Construction of A, B, C fire door application scope

The correct application of fire doors has serious implications for the construction of fire prevention. At present, most planners can select fire doors of appropriate grade according to the planning, application function, floor and location of the buildings, and set fire doors in the necessary positions, so that once the buildings break out of fire, they can slow down the extension, reduce the loss, and win the fire remedy time. However, there are still some planners in the use of fire doors, there are various mistakes, and the use of fire door grade is very casual, such as the use of fire doors in the local or the use of high-grade fire doors (such as Class A fire doors) parts of the use of low-grade fire doors (such as Class B, Class C fire doors), to build fire risk; some can not use the local fire door fire door or can use the middle and low grade fire door parts using the high grade fire door, to the user increased unnecessary burden.

Position of Class A fire door

high gauge

Oil-fired and gas-fired boilers, oil-immersed power transformers, high-voltage capacitors filled with oil-fired and multi-oil switches should be set in special rooms outside high-rise buildings. Except for boilers fueled by liquefied petroleum gas, when the above equipment must be arranged in high-rise buildings or skirt rooms due to conditions, the total evaporation of the boilers should not be over 600 t/h, and the evaporation of a single boiler should not be over 200 t/h; The total capacity of fuel oil-immersed power transformers should not pass 1260kVA, and the capacity of a single transformer should not pass 630kVA, and should conform to the following delineation:

It shall not be arranged on the upper floor, the lower floor or adjacent to the employee moose gathering place, and the partition wall without door and window opening with fire resistance limit of not less than 200h and the floor slab with 150h shall be separated from other parts. When it is necessary to open the door, Class A fire door shall be set ｡

Oil storage room shall be set in the diesel generator room, and its total storage capacity shall not exceed the required capacity of 800h. The oil storage room shall be separated from the generator by receiving firewall; when it is necessary to open the door on the firewall, it shall be provided with Class A fire door that can be closed by itself ｡

When the atrium is set in the building, the area of the fire zone shall be superimposed and contested according to the connected area of the upper and lower floors; when crossing the maximum allowable building area of a fire zone, the following demarcation shall be appropriate:

1 The same mouth parts of the room and the atrium shall be equipped with Class A fire doors and windows that can be closed by themselves;

2 and the atrium of the same hall, passageway, etc. should be set up a class a fire door or fire shutter; fire doors or fire shutter should be able to automatically close or lower in the event of a fire. The setting of the fire shutter should be in line with the delineation of Article 753 of this model;

3 atrium should be set according to the model of the ninth chapter of the designated smoke exhaust action method.

The equipment room, ventilation room and air conditioning room of automatic rescue system in high-rise buildings shall receive partition wall with fire resistance limit of not less than 200h, and the floor slab and Class A fire door of 150h shall be separated from other parts ｡

The uniform weight of combustible materials stored in the basement shall cross the room distance wall of 30kg/m2, and its fire resistance limit shall not be less than 200h. Class A fire door shall be used for the door of the room. Between the fire fighting elevator shaft, machine room and other adjacent elevator shafts and machine rooms, partition wall separation with fire resistance limit not less than 200h shall be received. When opening the door on the partition wall, Class A fire door shall be set ｡

The fire resistance grade of self-installed fire pump room shall not be lower than Grade II. When setting fire pump room in high-rise building, partition wall with fire resistance limit of not less than 200h and floor slab with 150h shall be separated from other parts, and Class A fire door shall be set ｡

The scope of use of Class A fire doors (fire doors with a fire resistance limit of not less than 12h):

I. Construction design fire protection standards

1. Decentralized doors set on the firewall.

2. Build an outer door for storing Class C liquid storage tanks.

3. When the boiler room and the fuel oil-immersed power transformer room are placed in the main building, if there is a door with other rooms, it will be connected to Shanghai Lianchuang Construction Design Co., Ltd.

Second high-rise civil building design fire protection standards

1. The door opened on the firewall.

2. The door on the equipment room, ventilation and air conditioner room of the active rescue system located in the high-rise building.

3. The door of the room where the uniform weight of combustible materials in the basement exceeds 30kg/m2.

4. The contact door between the oil storage room with the storage volume of not more than 10m3 in the boiler room and the boiler room.

5, not more than 10m3 of Class C liquid fuel storage room door.

6. The door on the diesel generator room placed in the high-rise building.

7. The door between the diesel generator room and the oil storage room.

8. The door opened between the fire elevator machine room and other elevator machine rooms.

9. Doors between boiler room, transformer room and other rooms.

10, high-rise unit-type residence only set up a safety exit door.

III. Fire Protection Standard for Car Depot

1. It is necessary to open the door on the firewall.

2. When the car garage and car ramp are not equipped with an active rescue system, Class A fire doors should be set at the entrance and exit of the car ramp.

When the high and low voltage distribution room in the transformer room is connected with the stage, side platform and scenery, the front room with an area of not less than 6m2 must be set up, and the Class A fire door shall be set up ｡

Gas heating installation is prohibited in the stage. When the above installation is used for the scenery, partition wall with fire resistance limit of not less than 25h shall be used to separate from Class A fire door. It is not allowed to be near the dressing room and prop room ｡

Set the part of Class B fire door:

high gauge

The area of atrium fire prevention partition of high-rise buildings shall be planned according to the area connected with the upper and lower floors. When one fire prevention partition area is passed, it shall conform to the following delineation:

1. The doors and windows connecting the room with the atrium corridor shall be provided with self-enclosed Class B fire doors and windows ｡

2. Class B fire doors or fire shutter with fire resistance limit greater than 300h shall be set for the same hall and passage as the atrium ｡

3. Firewalls should not be located at the inner corners of U, L-shaped and other high-rise buildings. When located near the corners, the distance between doors, windows and openings on both sides of the inner corners should not be less than 400m from the edge. When a strong Class B fire window is installed on the adjacent side, the distance may not be limited ｡

4. The distance between doors, windows and openings close to both sides of the firewall shall not be less than 200m; When the distance is less than 200m, strong Class B fire doors and windows shall be set ｡

5. The doors of high-rise perched buildings should not be opened directly to the front room. When it is really difficult, some doors opened to the front room should be Class B fire doors ｡

For Class I buildings, Class II buildings with a building height of 32m except for unit type and corridor type rooms, and tower type rooms, smoke-proof stairwells shall be provided. The setting of smoke-proof stairwells shall conform to the following designation:

1. Front room, balcony or gallery shall be set at the entrance of staircase ｡

2. The area of the front room shall not be less than 600 m2 for mass buildings and 450 m2 for perch buildings ｡

3. The door of front room and staircase shall be Class B fire door, and shall be open to the tendency of slackness ｡

Closed stairwells shall be set for podium and Class II buildings with building height not exceeding 32m except for unit type and corridor type rooms. The setting of closed stairwells shall be suitable for the following delineation:

1, the staircase should be on the outer wall, and should be direct natural lighting and natural ventilation, when not direct natural lighting and natural ventilation, should be set according to the smoke staircase delineation ｡

2. Class B fire door shall be set in the stairwell, and shall be open to the tendency of laxity ｡

3. When the first floor of the staircase is close to the important exit, the walkway and hall can be included in the staircase to form an enlarged closed staircase, but the fire prevention method such as Class B fire door should be used to separate from other walkways and rooms ｡

4. For the staircase of basement and semi-basement, partition wall with fire resistance limit of not less than 200h should be selected on the first floor to separate from other parts and should run through the outdoor. When it is necessary to open the door on the partition wall, Class B fire door should be accepted. The basement or semi-basement and the upper floor should not share the staircase. When it is necessary to share the staircase, it should be at the entrance between the first floor and the underground or semi-floor, partition wall with fire resistance limit of not less than 200h and Class B fire door shall be separated, and shall be marked ｡

5. Outdoor stairs can be used as assisted smoke-proof stairs. Its minimum clear width should not be less than 090m. When the inclined viewpoint is not more than 45 and the height of carved fence handrail is not less than 110m, the width of outdoor stairs can be included in the total width of scattered stairs. Outdoor stairs and each exit channel shall be included in the total width of scattered stairs. The fire resistance limit of channels shall not be less than 100h. On the wall surface within 200m near stairs, except for the slack door, other doors, windows and openings shall not be opened. The slack door shall be Class B fire door and shall not be opposite to the ladder section ｡

6. Class B fire door or fire shutter with blocking effect shall be selected for the door of front room of fire elevator ｡

Working Building Planning Model

Waste pipes should be provided for working buildings with six floors and above. When waste pipes are set up in high-rise working buildings, front rooms shall be set up, and the front room doors shall receive Class B fire doors.

For working buildings with more than three elevators, one elevator should be connected to the underground car parking garage; the elevator should be equipped with front room in the parking garage, and the front room door should receive Class B fire door or fire shutter door ｡

Location of Class C fire door

The pipeline well and cable well in the building shall be sealed with non-combustible body with fire resistance limit of not less than 050h at every 2~3 floors. The well wall shall receive non-combustible body with fire resistance limit of not less than 100h. The inspection door on the well wall shall receive Class C fire door ｡

Vertical pipeline wells such as cable well, pipeline well, exhaust duct, exhaust duct and waste duct shall be set separately; the well wall shall be non-combustible body with fire resistance limit of not less than 100h; the inspection door on the well wall shall be Class C fire door ｡

Car garage fire prevention

For multi-storey, high-rise and underground car storehouse except open car storehouse and sloping floor type car storehouse, the two sides of car ramp shall be separated from parking area by firewall. The entrance and exit of ramp shall be separated from parking area by water curtain, fire shutter or Class A fire door. When the car storehouse and car ramp are equipped with automatic rescue system, this restriction is not allowed ｡

Model of Urban Greening Scheme

The sheltered trees should be cultivated around the parking area, and the isolation protection green belt should be cultivated; the sheltered trees should be cultivated in the parking area with the mooring distance belt. The sheltered trees cultivated in the parking area can be planted on the street. The height under the branches of the trees should be in accordance with the designation of the net height of the parking space: 25m for small cars, 35m for medium cars and 45m for cargo cars ｡