When the space height is 6 m ~ 12 m and the slope is less than 15 degrees, the protection area of a detector in a general protection place is 80 square meters and the radius is 5.05 meters. 12m installation height is the same as above.

When the space height is less than 6 meters and the roof slope is less than 15 degrees, the protected area is 60 square radius, that is, 4.37 meters.

Another factor that affects the installation distance of the smoke sensor is the height of the cross beam. Generally speaking, this calculation is a bit troublesome, and sometimes I don't want to calculate this thing. When the quantity is done, it depends on estimation. In addition, sometimes you can't see the information of the beam when you look at the drawings. So as long as you pay attention, when there are beams over 600mm, you should set up smoke sensing in two areas, not according to the spacing above.

Smoke sensation in the corridor according to the requirements of GB50 1 16, the smoke sensation shall be set in the corridor with a width less than 4m, as far as possible in the center, with the maximum distance not exceeding15m and the distance from the wall not exceeding 7.5m..

Reference: Baidu Encyclopedia _ Code for Design of Automatic Fire Alarm System