1. The fire resistance level of buildings is divided into four levels, Category 1, Category 2, Category 3 and Category 4. to

2. Node gaps or exposed parts of metal load-bearing component nodes should be provided with fire protection layers. to

3. Fire resistance level, number of layers, length and area of ​​civil buildings, the maximum length of the first and second level fire protection zones is 250 meters. The maximum allowed building area is 2,500 square meters. to

4. For underground rooms, windowless rooms or above-ground rooms with fixed window sash, as well as evacuation walkways exceeding 20m without natural smoke exhaust or evacuation inner walkways with direct natural ventilation but longer than 40m, mechanical smoke exhaust facilities should be installed. to

5. About smoke exhaust

1. If there are openings such as corridors and escalators connecting the upper and lower floors in a building, the upper and lower connecting floors should be regarded as a fire protection zone. to

2. Fire protection zones in underground and semi-underground buildings should be separated by fire walls, and the building area of ​​each fire protection zone should not be greater than 500m².

3. When an automatic fire extinguishing system is installed, the maximum allowable building area of ​​each fire protection zone can be increased to 1000m². When setting locally, the increased area should be calculated as twice the local area. to

4. Fire protection distance of civil buildings: The fire protection distance between civil buildings is 6-9 meters. to

5. The number of safety exits in public buildings and corridor-type residential buildings should not be less than two. to

6. Tower residences with nine floors or less and a building area not exceeding 500m² can be equipped with a staircase. to

7. Two safety exits must be provided at the safety entrance or evacuation entrance of high-rise buildings. to

8. Safety exits or evacuation exits in the building should be arranged dispersedly. The horizontal distance between the nearest edges of two adjacent safety exits or evacuation exits in a building should not be less than 5.0m. to

9. The distance from the room door that leads directly to the public walkway to the nearest external exit or enclosed stairwell: 25 meters for the first and second levels, and 22 meters for the circular passage. The evacuation distance of buildings equipped with automatic sprinkler systems can be increased by 25%. to

10. The first floor of the stairwell should be equipped with a direct external exit. When the number of floors does not exceed four, the external exit can be set no more than 15m away from the stairwell. to

11. The emergency door should be a push-latch outward opening door. to

12. The partition wall between the transformer room and the distribution room should be equipped with a firewall. The boiler room and transformer room should be located on the first floor near the exterior wall, and the doors should be opened on the exterior wall. A fireproof overhang with a width of not less than 1.00m or a window with a height of not less than 1.50m should be provided above the opening of the first-floor exterior wall.

1. When the fire lane passes through the door opening of the building, its clear height and width should not be less than 4m; the clear width between door stacks should not be less than 3.5m. to

2. Pipe wells and cable wells in buildings should be sealed every 2 to 3 floors with non-combustible materials with a fire resistance rating of not less than 0.50h, and the well walls should be made of non-combustible materials with a fire resistance rating of not less than 1.00h. burning body. The inspection door on the shaft wall should be a Class C fire door.

3. The walls of the elevator shaft and elevator machine room should be made of non-combustible materials with a fire resistance limit of not less than 1 hour. The walls of indoor elevator shafts and elevator machine rooms of high-rise industrial buildings should be made of non-combustible materials with a fire resistance rating of not less than 2.5 hours.

4. The height of evacuation stair railings should not be less than 1.1m. Outdoors of other buildings, the inclination angle may not be greater than 600, and the clear width may not be less than 2000px. This restriction is not required when the step depth at each level 625px away from the handrail exceeds 550px. to

5. Fire-fighting water can be supplied by the water supply network, natural water sources or fire-fighting pools. to

6. The full water column of the outdoor fire hydrant nozzle is still not less than 10m; (counted from the ground). to

7. The water consumption of outdoor fire hydrants in civil buildings should be guaranteed to be 30L/S25, 20. Calculated based on building area. to

8. There should be no less than two water main pipes in the annular pipe network and water pipes that transport water to the annular pipe network. to

9. The annular pipeline should be divided into several independent sections using valves, and the number of fire hydrants in each section should not exceed 5. The minimum diameter of outdoor fire water supply pipes shall not be less than 100mm. to

10. Outdoor fire hydrants should be installed along the road. When the road width exceeds 60m, fire hydrants should be installed on both sides of the road and should be close to the intersection. to

11. The distance between the fire hydrant and the roadside should not be more than 2m, and the distance from the exterior wall of the house should not be less than 5m. to

12. The distance between outdoor fire hydrants should not exceed 120m. The protection radius of outdoor fire hydrants should not exceed 150m. to

13. The water consumption of each outdoor fire hydrant should be calculated as 10-15L/s; the water consumption of the water pump combiner is 10L/S-15L/S;

14. The water column of fire hydrants in high-rise buildings should not be less than 10 meters to 13 meters. to

15. Outdoor above-ground fire hydrants should have one spigot with a diameter of 150mm or 100mm and two spigots with a diameter of 65mm. to

16. The fire pool should meet the automatic sprinkler fire extinguishing duration calculated as 1 hour. to

17. The first category of fire pool is 18 cubic meters. 12 cubic meters for residential Class I buildings. to

18. The protection radius of the fire pool for fire trucks to draw water should not be greater than 150m. The fire pool for fire trucks to draw water should be equipped with a water inlet, and the distance between the water inlet and the building (except the water pump room) should not be less than 15m. to

1. The water consumption of indoor fire hydrants in civil buildings is generally 20L/S, and the arrangement is no less than 4. Indoor fire hydrant water consumption: 10L/S for super high-rise buildings with a building height greater than 50 meters and 30L/S. to

2. When there are more than 10 indoor fire hydrants and the indoor fire water consumption is greater than 15L/s, the indoor fire water supply pipeline should have at least two water inlet pipes connected to the outdoor annular pipe network, and the indoor pipes should be connected into a ring or the water inlet pipes should be connected Connected to outdoor pipes in a loop. When an accident occurs in one water inlet pipe of the annular pipe network, the remaining water inlet pipes should still be able to supply the full amount of water. to

3. The indoor fire protection standpipe of high-rise industrial buildings should be in a ring shape, and the diameter of the pipe should not be less than 100mm.

4. The indoor fire water supply pipeline should be divided into several independent sections using valves.

5. The arrangement of indoor fire hydrants should ensure that the sufficient water jets of two water guns reach any part of the room at the same time. The distance between two fire hydrants should not exceed 25 meters, and the full water column of the water gun should not be less than 13m of water column.

6. The hydrostatic pressure at the spigot of the indoor fire hydrant should not exceed 80m of water column. If it exceeds 80m of water column, a partitioned water supply system should be used. When the water outlet pressure at the fire hydrant mouth exceeds 50m water column, there should be pressure reducing facilities.

7. An indoor fire hydrant should be installed in the front room of the fire elevator. The height of the fire hydrant from the ground should be 1.1m. The water outlet direction should be downward or at an angle of 900 to the wall where the fire hydrant is installed.

8. The distance between fire hydrants on the same floor should not exceed 30 meters. The bolt opening is 1.1 meters above the ground. The bolt mouth is DN65. The water hose should be no less than 25 meters, and the water hose mouth should be 20 millimeters.

9. Fire water consumption for 10 minutes should be stored. When the indoor fire-fighting water consumption does not exceed 25L/s, and the calculated fire-fighting water storage capacity of the water tank exceeds 12m³, 12m³ can still be used; when the indoor fire-fighting water consumption exceeds 25L/s, and the calculated fire-fighting water storage capacity of the water tank exceeds 18m³, 18m³ can still be used.

Wet sprinkler fire extinguishing system (suitable for indoor temperature 4-700C), dry sprinkler fire extinguishing system (suitable for indoor temperature 4-700C), pre-action sprinkler fire extinguishing system, rain sprinkler system, water curtain system.

1. Underground stores with an area greater than 500m² should be equipped with automatic sprinkler systems. to

2. The components of the automatic forest spraying system: alarm valve, control valve, hydraulic alarm bell, system inspection device, pressure gauge, opening and closing indicating device. It is also equipped with a water flow indicator, a pressure switch and an auxiliary electric alarm device. to

3. The alarm valve should be installed 1.2 meters above the ground.

4. Each alarm valve controls no more than 800 wet or pre-action sprinkler heads. 50 dry type with exhaust device, 250 dry type without exhaust device;

5. The diameter of the fire branch pipe shall not be less than 25. Each fire branch pipe can replace up to 8 sprinkler heads. to

1. A set of fire water pumps should have no less than two suction pipes. High-rise buildings are equipped with measures to prevent overpressure. to

2. The fire pump room should have no less than two outlet pipes directly connected to the annular pipe network. to

3. The fixed fire water pump should be equipped with a backup pump, whose working capacity should not be less than that of a main pump. to

4. The fire water pump should be guaranteed to start working within 5 minutes after the fire alarm, and can still operate normally when the fire scene is powered off. to

1. When each fire protection zone on each floor of a multi-story building or high-rise industrial building has independent ventilation and air conditioning systems, the junction of the supply and return air horizontal air ducts and the main duct in the protected fire protection zone may not be Install fire dampers.

2. Batteries can be used as backup power sources for fire accident lighting and evacuation indication signs, but the continuous power supply time should not be less than 20 minutes.

3. Fire lighting should be provided in the following closed stairwells, smoke-proof stairwells and front rooms, and fire elevator front rooms.

4. According to regulations, closed stairwells or evacuation walkways of smoke-proof stairwell buildings should be provided;

5. The minimum illumination of emergency lighting for evacuation should not be less than 0.5lx. The lighting branch lines of the fire control room, fire pump room, and self-contained generator room should be connected to the fire distribution lines.

6. Evacuation indicator signs should be placed on the top of the emergency door or on the wall of the evacuation walkway and its corners less than 1m above the ground. The distance between the indicator signs on the walkway should not be greater than 20m.

1. The alarm area is divided according to the fire protection area. An alarm area can be composed of several fire protection zones.

2. The forms of automatic fire alarm systems include: centralized alarm system; regional alarm system; control alarm system (fire control center). One regional alarm controller can alert multiple floors (depending on the function of the product). The installation position is 1.3-1.5 from the ground. meters, the installation position of the alarm phone is 1.3-1.5 meters. to

3. Underground stores with a building area greater than 500m² should be equipped with automatic fire alarm devices. to

4. The fire resistance level of an independently installed fire control room should not be lower than Level 2. Use partition walls and floor slabs with a fire resistance rating of not less than 3 hours and 2 hours respectively, and separate them from other parts and set up safety exits that lead directly to the outdoors. to

5. The fire control room should be equipped with the following functions: receiving fire alarms, sending out fire sound and light signals, accident broadcasts and safe evacuation instructions, etc.: controlling fire water pumps, fixed fire extinguishing devices, ventilation and air conditioning systems, electric fire doors, valves, fire rolls, etc. Curtains, smoke prevention and exhaust facilities. Display power supply, fire elevator operation status, etc.

6. The fire alarm button is installed 1.5 meters above the ground. to

7. Reserve a length of 100-200 mm for the alarm line and tie it into a bundle with red and blue lines. to

8. There should be no joints or knots in the laying of alarm wires. The wire joints should be connected with terminal blocks or welding in the junction box (no more than 2 wires per terminal block), and nuts should be added inside and outside the box. Lines with different voltages, currents, circuits, systems, and types cannot be placed in the same trunking. to

9. Hangers and brackets are installed every 1.5 meters in the wire trough, and the hanging rod is not less than 6MM. to

10. The fire power supply should be a dedicated power supply, and plug-in connectors are not allowed. to

11. The door of the fire control room should be opened in the evacuation direction. A return air duct is allowed but a fire damper should be added. It is strictly prohibited to allow irrelevant electrical lines to pass through, leaving a 1-meter channel and maintenance channel around the console. to

12. Fire control functions: control the opening and closing of fire protection equipment; switch of fire pumps, smoke prevention and exhaust fans; close fire dampers, stop air conditioning blowers; display the location of fire and fault alarms; evacuation channels, exits, etc.; display Protection map (simulation map, plan view); display the status of fire power supply; equipped with fire alarm emergency broadcast control device. to

13. The process of fire control state: when a fire alarm occurs; the fire alarm system alarms; the automatic fire extinguishing system starts; the indoor fire hydrant system starts (the fire pump starts); the power supply switches (non-fire power outage, emergency fire power starts), and Turn on alarm devices, emergency lighting devices and evacuation indication lighting. The elevator made an emergency landing on the first floor; the pressurized air blower was started (the air outlet was opened), the isolation system was started (the fire shutter was lowered), and the fire door was closed. to

14. At least one manual fire alarm device should be installed in every fire zone. The distance between two manual fire alarm devices should not exceed 30 meters, and the installation position should be 1.3-1.5 meters. to

1. Class I and II buildings (more than 50 meters in height) and buildings with a building height exceeding 32 meters should be equipped with smoke-proof zones. to

2. The smoke prevention zone generally does not exceed 500 square meters and is not larger than the fire protection zone; it does not cross the fire protection zone. The smoke prevention and exhaust system is generally set up in the corridor, smoke prevention duct, and exhaust shaft independently, and the fire resistance level is 1 hour. to

3. Smoke prevention and exhaust systems for high-rise buildings. It is divided into a mechanical pressurized air supply and smoke prevention system and an automatic smoke exhaust system (the outer window can be opened); the automatic smoke exhaust system (the outer window can be opened) is divided into: a mechanical smoke exhaust system and a natural smoke exhaust system that can open the outer window. to

4. The tower building should be equipped with two evacuation and smoke-proof stairs; and a front room with a mechanical pressurized air supply system. A pressurized air outlet is provided in the stairwell every 2-3 floors, and a pressurized air outlet is provided in the front room on every floor. to

5. Smoke-proof stairwells. The design air volume of the common fire front room is 18000-20000. 28000-30000M3, H. Segment calculation for layers exceeding 32. to

(1) Mechanical pressurized air supply system

(2) Mechanical exhaust (smoke prevention) system