What is the nature of the annex?

Attached rooms belong to property management rooms. Generally refers to supporting houses, generally refers to residential property management houses.

Accessory houses generally refer to supporting houses, which can be property management houses in residential areas, power distribution rooms and gas pressure regulating stations in residential areas, and usually play an auxiliary role in residential areas. Basement, garage, canteen, civil air defense facilities, fire control facilities, etc. All belong to annex buildings.

In addition to the high-voltage distribution room and fire pump room, there are other weak current control rooms and ventilation rooms. Other needs: water filtration room, disinfection room, unmanned automatic control room, communication (telecommunications, mobile, etc. ) room, Internet equipment room, etc.

Fire equipment rooms attached to buildings, such as equipment rooms with fixed fire extinguishing systems, fire water pump rooms, ventilation and air conditioning rooms, smoke control rooms, etc. , it should be separated from other parts by partition wall with fire resistance limit of not less than 2.00 h and floor of1.50 h. The fire resistance rating of independently built fire pump house should be not less than Grade II.

The fire pump room attached to the building should not be set on the floor where the height difference between the ground and the outdoor entrance and exit of the basement is greater than 10m. When the fire pump room is set on the first floor, its evacuation door should directly lead to the outside, and when it is set on the underground floor or floor, its evacuation door should directly lead to the safety exit. The door of the fire pump room shall be Class A fire door; The elevator machine room should be separated from the ordinary elevator machine room by a partition wall with a fire resistance limit of not less than 2.00 h. If the door is opened, a Class A fire door should be set.