雨水口：设在绿地里，道路雨水显流进绿地，渗透不了的经绿地漫流后进雨水口，雨水悬浮物浓度已大大降低。;

5. 标高:室内注相对标高,以底层室内地坪为±0.00m。

毕业论文关键词： 雨水排水；供水与排水；消防给水

Design of water supply and drainage for a library in SuZhou

Design Description：The design of library building is the main object, the main content of the design includes the following four aspects respectively: architectural water supply system, drainage system, rain water drainage system and fire control system.

1. The design basis:

The building water supply and drainage design specification (GB 50015-2003) (2009)

"Code for fire protection design of buildings (GB50016-2006)

"Code for design of extinguisher disposition" (GB 50140-2005)

The sprinkler design specification (GB 50084-2001) (2005)

"The civil building water-saving design standard" (GB 50555-2010)

The library building design (JGJ 38-99)

Building professional provide the shop drawing

Base around underground pipeline information

2. The project summary:

The library building belongs to the lower public buildings, the main building height of 20 meters, including four layers on the ground, underground to the second floor, and is equipped with facilities such as pool fire pool, pump house and life, the buildings with a total construction area of 15733.5 square meters, each layer are 5 meters high, and the layers of design library, study room and meeting room area respectively.

3. The design scope: indoor water supply system, indoor drainage system, rain water system and fire extinguishing system design.

4. The engineering system overview:

Water: water source project of municipal water supply for the city.

Outdoor fire: base, introduced by the municipal pipeline two road, form outside loop.

Two way feed pipe through the base inside pocket for outdoor fire water; In addition from the municipal water supply loop separately introduced DN80 pipe for the drinking water.

A. water supply system:

Choose way of feed water is directly by the municipal water supply pipe network for water supply system in the library of water supply, municipal water supply pressure is 0.25 Mpa. Service pipe material is plastic pipe.

Summer peak municipal minimum water pressure by 0.25 Mpa.

Maximum daily water: 44 tons/day, maximum hours water: 8.2 tons /.

B. indoor fire control system:

Mainly includes automatic spray fire extinguishing system and fire hydrant water supply system, the whole plot with temporary high-pressure system regional water supply, fire pump room is located in the second floor, at the ground floor of A building fire water tank is located in A LouWu top.

Outdoor fire hydrant system: the design discharge of 30 l/S;

Indoor fire hydrant system: the design discharge of 15 l/S.

1) each layer is set fire hydrant fire extinguishing system, assure indoor fulfilling any part have two nozzle water arrive at the same time.

2) the fire hydrant system: pision for a pressure; Dynamic pressure is greater than 0.5 Mpa hydrant pipe will set the decompression orifice plate.

Spray system: for wet type system

C. the design discharge:

According to the design of the main building, according to dangerous class II in the underground garage design, design of spraying intensity 8 l/min.

Ground layer: the nozzle arrangement according to the dangerous grade I design, design of spraying intensity 6 l/min.

Interior of the project are set automatic spray fire extinguishing system, for a pressure partition. All the water indicator after the water pressure is greater than 0.4 Mpa decompression orifice plate of the reduced pressure.