Abstract
The project construction area of about 4.5 million square meters. 2 underground floor, ground floor, 20-storey office complex. Total building height of 79.93 meters. Department of a class of senior civil construction. Two floors underground garage, 1-3-tier market for the notes for the 4-15-storey office area for the hotel, 16-19th floor, 20th floor for the restaurant. The design needs to be addressed is the building's water supply system, sewage system, water system, fire system and water system design to meet the needs of daily life. The design needs to solve the main problem is the system of selection, the system layout and the laying of pipelines and related calculations. Water: Municipal Water: outdoor pipe network water pressure 0.10 ~ 0.28Mpa; Water pipe diameter DN300. Drainage: rainwater and sewage are discharged into urban sewage pipe network. Rain municipal pipe network, sewage diversion. Storm intensity and other related information by Jiangsu Liyang area find in the design manual. Construction Conditions: The fire resistance level of 1 ~ 2 buildings; fire danger rating for the risk level. Design elements: water, water, sewage, waste water, rain, fire, since the spray system. The water supply system is divided into three areas, the low zone: part of the basement and shopping malls that -2 to 4 layers for the low zone, directly by the municipal water supply to the water supply network; Central District: 5 ~ 15 levels set a variable frequency pump water; High District: the apartments and the restaurant part of the 16 to 20 layers for the high water tank and then into the supply. Pump room in the basement. Tank volume of 100m3, finished with stainless steel water tank. Variable water flow rate of water supply equipment Design Flow of districts, the pressure can be guaranteed not less than the top of the water supply pressure 0.1MPa Hotel and office part of the set concentration of hot water, heat for the steam boiler to provide heat, hot water generated by heat exchanger. Water primarily for the high zone in the area of apartments and office buildings, the design water temperature is 60 ℃. Outdoor water use of rain and sewage diversion system, interior drain waste and sewage separation. Groundwater pumping station equipped with fire hydrant system in the high zone and low zone 2 fire pumps, fire pipeline into the ring arrangement, the vertical to the device layer is bounded by a valve area, after the regulator valve pressure 0.2Mpa, up and down District static pressure not more than 1.00Mpa; 5 ~ 10 layers of vacuum-type fire hydrants to ensure that population pressure does not exceed bolt 0.50MPa. Since the spray system in the groundwater pumping station equipped with two sets flowing to the pump, control with no more than 0.4Mpa water pressure and to meet the most unfavorable initial point of the fire sprinkler water spray pressure.
Key words: Water supply; water; water; wastewater; rain; fire; Automatic Sprinkler System
