1, the floor height is less than 12 meters, the room area is less than 80 flat, the maximum protection area of smoke is 80 flat, the protection radius is 6.7 meters. The height of the floor is higher than 6 meters less than 12 meters, room area is greater than 80 flat, the maximum protection area of smoke is 80 flat, the protection radius is 6.7 meters.
2, the height of less than 6 meters, room area is greater than 80 flat, the maximum protection area of smoke is 60 flat, the protection radius is 5.9 meters.
3, 2 smoke sense of the distance does not exceed 15 meters. The distance to the wall is greater than 50 cm. Height 3-6 meters a smoke pipe 60 square meters, 6-8 meters a smoke pipe 80 square meters! Note that it is the area of the square.
4, the distance generally does not exceed 3.6 meters, and the distance between 0.8 --- 1.8 meters, smoke to the wall should not be less than 0.5 meters, to the edge wall distance is not more than 7.5 meters, less than 3 meters in the inner walkway.
5, its location should be guaranteed from any part of a fire prevention zone to the nearest broadcast distance of not more than 25 meters, the last broadcast in the walkway to the end of the walkway should not be greater than 12.5 meters.