Abstract:This design topic for the drainage engineering building water supply design office of Suzhou city after the Plaza, the building belongs to the comprehensive building, for the risk grade I buildings.
The specific design project: indoor water supply engineering, indoor drainage engineering, engineering (including indoor fire hydrant system and automatic sprinkler system), indoor hot water project, a total of 5 parts.
Life water supply system is divided into high and low area. Low area 1 ~ 4 layer by the municipal water supply pipe network directly, using downfeed type water supply mode; high 5 ~ 16 layer consists of a water tank, water pump and water use upstream to water supply, water volume of 3.9 cubic meters, the effective volume of 3.6 cubic meters, water pump selection IS80-50-250A. A layer of equipment room with storage tank and pump house. Roof set high water tank, water tank and water tank is divided into life.
The use of drainage confluence, each vertical pipe in the 16 layer of the top of the ventilating, vertical pipe ventilation were set DN100 of each drainage pipe. The system set up a total of 17 drainage pipes and 4 international 01S302.87 DN200 rain water bucket. Waste water is discharged into the outdoor septic tank, septic tank of 40 cubic meters.
Fire hydrant system does not partition, use of temporary high pressure water supply system water tank and pump water supply system. Each hydrant box set fire pump start button, can directly start the fire pump. The fire pump selection of XA65/26A type, fire water tank volume of 18 cubic meters, 10 minutes of fire water storage. The fire lasted for 2 hours. The system comprises of 11 vertical pipes, each root diameter vertical tubes are DN100.
Using wet automatic fire-extinguishing sprinkler system. The building is divided into three zones, each zone of a vertical tube, a total of three riser. Each vertical pipe is connected with an alarm valve, wet alarm valve is arranged on a layer of equipment room, hydraulic alarm installed in the alarm valve near. The fire lasted for 1 hours. The overall use of rectangular arrangement of the sprinkler system, A, B office using ordinary type and wall type nozzle joint set.
Indoor hot water with hot water supply mode of centralized, in order to guarantee that the pressure balance water and water supply, partition and piping hot and cold are consistent, level two, 1 to 4 layers of low area using downfeed type water supply mode; high 5 ~ 16 layer using the uplink to water, because of high connection the water heater caused great loss of water, the pressure tank is arranged in the water tank outlet pressure. This design uses the hot water circulation system.
The design process of a system plan, layout and calculation, selection and various equipment. Finally using CAD draw every system of plane diagram and schematic diagram.
Keywords high-rise building water supply system drainage system hot water system fire protection system