Code for fire protection design of cable shaft in high-rise buildings

The bridge in the cable shaft of high-rise building needs fire prevention. Fire protection regulations for elevator shaft and pipeline shaft design of high-rise civil buildings;

Elevator shaft regulation

Elevator shaft should be set independently. It is forbidden to lay flammable gas and Class A, B and C liquid pipelines in the hoistway, and cables and wires unrelated to the elevator shall not be laid. There should be no other holes in the elevator shaft wall except the elevator door opening and ventilation hole. Elevator doors should not use fence doors.

Provisions for cable wells and pipeline wells

Vertical pipeline wells such as cable wells, pipeline wells, smoke exhaust channels, exhaust channels and garbage channels shall be set independently; The shaft lining shall be incombustible, and the fire resistance limit shall not be lower than1.00h; The inspection door on the shaft wall shall be Class C fire door.

Building height regulation

For high-rise buildings with a building height not exceeding 100M, cable wells and pipeline wells should be separated every 2 ~ 3 floors by incombustible materials equivalent to the fire resistance limit of this floor; High-rise buildings with a building height exceeding 100M should be separated by incombustible materials equivalent to the fire resistance limit of each floor.

Cavity regulation

The holes of cable wells and pipeline wells communicating with rooms and walkways shall be filled with incombustible materials.

Garbage passage rule

The garbage chute should be set by the outer wall, not in the stairwell. The exhaust port of the garbage chute should be directly open to the outside. The garbage hopper should be located in the front room of the garbage chute, and the front room should adopt Class C fire doors. The garbage hopper should be made of incombustible materials and can be closed by itself.