Design Of Water Supply And Drainage Engineering Of Cheng Building

Handan City Construction Committee in accordance with the approved design and relevant task book, to be built in the urban areas of Chengxiang Hotel in Hangdan.The building twenty-five floors of which is above the ground and four floors of which are under the ground. The total altitude of the building is 95.2m. Water drainage works of the building as the subject of this graduation project.The building is a complex. Engineering frame shear wall structure. Outdoor ground level-1.050 m. Minus four for wartime air defense zone and parking, the height of 3.900 meters, and with the fire pool and living pond. One to three for the underground parking lot, the height was 4.2 m,4.5 m,4.2 m. One to twenty five for the office and R & D departments, one of which is 5.200 meters storey, two-story five layers are 4.500 meters high, six to twenty-five layers are 3.600 meters high, roof room layer has an elevator machine room, rooftop water tanks, ponds. See in particular the drawings, and the layers of floor plans. According to the building’s size, purpose, interior features advanced water supply and drainage equipment; this building should be a reliable fire safety measures to ensure the safety of people and property. So this building was designed stable fire hydrant system and automatic sprinkler system. Application of electrical linkage of knowledge to achieve a comprehensive automated unattended. Life requires water pump automatically open and close. Depending on the form, using pipes concealed manner. Including the following:water supply system, hot water system, fire water supply system (covering fire hydrant structure and active sprinkler system), drainage system, the project budget.Building high-rise building water supply and drainage components because within more demanding applications water supply and drainage equipment personnel, if the effects of water stoppages and other problems clogging drains wider scope. So we in the water, pump selection, system design, piping settings should ensure the security and stability of water supply and drainage smooth and reliable; high-rise building complex due to the multi-floor, height and large, indoor water supply, fire protection, hydrostatic pressure hot water systems are relatively large, we take the vertical partitioning water ways to reduce the hydrostatic pressure pipelines, in order to avoid damage caused by excessive pressure equipment, while reducing energy waste; high-rise buildings in the complex, high traffic, if there is a fire hazard large, and difficult to fight the blaze, will cause serious economic losses and casualties, while the adverse social impact. Therefore, in the design of high-rise fire, our principle is based on self-help, take advantage of the development of modern science and technology, we set up various forms of automatic fire extinguishing systems and fire hydrant system to meet the needs of high-rise buildings; high-rise buildings because the long pipe routing, equipment style more decoration demanding, it requires a variety of pipe is relatively high, should choose good quality specifications to ensure damage does not occur within a reasonable number of years, water leakage does not occur; high-rise buildings due to the drainage, HVAC, electrical automation, smart devices, etc., causing more pipelines cross, generally set in a dedicated technical layer, so easy to set various channels, can reduce cross between the pipes, to create the conditions for the latter part of maintenance.Cold water supply system for life is divided into two districts, with downward zone directly supplied water by municipal pipe net, while upward zone by water pump and water tank jointly. With two supplemental pumps, water supply system for life and fire-fighting system have each store pond which is built on forth floor underground.The roof has two water tanks builder for life and for fire control. Automatic spray water system has a jar of atmospheric pressure; the jar is set up nearby water tank on the roof.This manual has introduced the design of each system, calculating course in detail, and has elaborated some kinds of defense measures for reference.