What should I pay attention to when building and installing emergency broadcast?

Places where emergency lights need to be installed: except residential buildings with a building height less than 27m, evacuation lighting should be installed in the following parts of civil buildings, factories and Class C warehouses: 1. Closed stairwell, smoke-proof stairwell and its antechamber, fire elevator antechamber or * * * use antechamber, refuge walkway and refuge floor (room); 2. Audience halls, exhibition halls, multi-function halls, business halls, restaurants, studios and other crowded places with a building area of more than 200m2; 3. Underground or semi-underground public places with a building area greater than 100 square meter; The following buildings or places should be equipped with light evacuation signs or light storage evacuation signs that can maintain visual continuity on the ground of evacuation corridors and main evacuation passages: 1. Exhibition buildings with a total construction area of over 8,000 square meters; 2. Above-ground shops with a total construction area of over 5,000 square meters; 3. Underground or semi-underground shops with a total construction area of over 500 square meters; 4. Song and dance entertainment places; 5. Public areas of waiting rooms, waiting halls and terminals with a building area of more than 3000m2 in stations, wharf buildings and civil airport terminals. Extended information: Requirements for setting emergency lighting: 1. The minimum illumination of emergency lighting for evacuation should not be less than 0.5lx, and the illumination of normal lighting should still be guaranteed for emergency lighting of rooms that still need to work in case of fire, such as fire control room, fire pump room, smoke control room, power distribution room, self-provided generator room and telephone switchboard room. 3, emergency evacuation lights should be located on the wall or ceiling. The safety exit sign should be located at the top of the exit; Indicating signs for evacuation walkways shall be set on the wall below the ground 1m at the evacuation walkways and their corners. The distance between evacuation indicators on the aisle should not be greater than 20m. 4. Emergency lights and light evacuation signs should be equipped with protective covers made of glass or other incombustible materials. 5, emergency lighting and evacuation signs, the battery can be used as a backup power supply, and the continuous power supply time should not be less than 20 minutes; The continuous power supply time of high-rise buildings with a height exceeding 100m should not be less than 30min. Reference source: reference source: