Problems and suggestions in water supply and drainage design of buildings.

The design styles of residential buildings in China are becoming more and more diversified, and the construction of engineering buildings is becoming more and more difficult. More complex engineering structures put forward higher requirements for water supply and drainage. In order to fully realize the transmission efficiency of residential water supply and drainage under the premise of ensuring the building to realize its specific function and prolong its service life, developers and construction units should investigate the shortcomings and defects in water supply and drainage design and construction according to the specific requirements of modern buildings, and give effective solutions to the problems.

Water supply design of 1 building

Building water supply mode needs constant innovation. On the premise of ensuring scientific and reasonable architectural design, the water supply system should be more environmentally friendly and energy-saving to bring convenience to residents. On the basis of the original water supply mode, it needs to be continuously improved and optimized to solve the problems existing in the previous water supply design and construction, so as to make the water supply system more scientific and more in line with the requirements of modern architecture. 1. 1 Design and installation of visual control valves in buildings. In many traditional buildings, the water supply control valve was placed in the well during design and construction, which achieved the purpose of saving the project cost and reducing the construction difficulty, but it brought inconvenience to users, such as water running accident in the building, and users could not close the water supply pipeline in time and effectively, resulting in more economic losses. Some water supply companies and property management companies also lock the diversion valve in the well for the convenience of management, but the design of the master control valve itself is unscientific, which directly affects the use of users. Therefore, we can choose to set control valves at reasonable locations in buildings, such as kitchens and bathrooms, so that users can effectively control the water circulation and prevent accidents.

1.2 design and installation of outdoor control valve. Among all kinds of outdoor valves, butterfly valves are widely used, and the connecting medium of butterfly valves generally adopts flanges to meet the design requirements of water supply valves. However, this installation method has some shortcomings that cannot be ignored. For example, the valve is installed underground, so it is difficult to replace it, and the flange gasket is also difficult to insert. Therefore, designers should consider adding a telescopic device at the connecting valve to make the use and replacement of the valve more convenient, thus reducing the production cost and increasing the flexibility of the water supply system.

1.3 design of toilet and drinking water supply system. In traditional buildings, in order to save costs, construction enterprises do not adopt complicated water supply methods, thus simplifying working procedures and improving economic benefits. During the construction, these enterprises will directly connect the drinking water system with the pipeline of the toilet water supply system. When the pipeline is blocked, the toilet will be filled with sewage. Because the siphon backflow of the toilet will change the pressure in the flushing pipeline, the sewage in the water supply pipe will flow backwards to pollute the drinking water. Therefore, when designing the toilet water supply system, the disadvantages of this method should be fully considered, and the toilet flushing pipeline should be set separately to separate the drinking water system from the toilet water supply system to ensure the water supply safety of the water supply system.

1.4 drainage design of closed pipeline well. In buildings, water supply pipelines are mostly hidden in the wall, and special pipeline wells with strong sealing performance are used for sealing, so as to achieve the purpose of beauty and protection of the main pipeline, and at the same time realize centralized wiring and management of pipelines. However, there are some defects in this design method. For example, when a large amount of water runs away, due to the closure of the pipeline well, the accumulated water cannot be discharged in time, and too much accumulated water will seep from the nearby wall, thus destroying the wall structure and causing greater economic losses. Therefore, when designing water supply pipelines, designers should prevent water seepage, leave holes in proper positions of pipeline wells for drainage, and do a good job of isolating holes from each other to prevent animals and foreign objects from entering. But the most effective way to prevent wall leakage is to waterproof the inner wall of the pipeline.

2 building drainage design

2. 1 kitchen drainage design. The indoor kitchen branch pipe is complex, so the principle that the horizontal drainage pipe is located on this floor should be followed to prevent the kitchen sewage from flowing into the lower floor and increase the maintenance difficulty. All horizontal pipes in the kitchen should be connected to the main drainage riser on this floor. The horizontal drainage branch pipe under the washbasin is best drained by trap, which is beneficial to sewage discharge and pipeline cleaning. The kitchen floor drain can be located under the floor because of the ground drainage. However, the author believes that washing is not used in kitchen cleaning at present, kitchen facilities have good waterproof performance, and floor drain is of little use. It is suggested to cancel the floor drain design, which is not only beautiful, but also can increase the use space of the lower floor. 2.2 air conditioning condensate discharge. At present, air conditioning has become a necessary household appliance for thousands of households, but the discharge of condensed water from air conditioning is not considered in the drainage design of buildings. Therefore, the centralized discharge of air conditioning condensate should be considered in building drainage design. You can choose to use it together with the rainwater riser, or you can set up an air-conditioning condensate riser separately, but you must reserve the condensate pipe joint in advance and ensure the beautiful facade. 2.3 storm sewer design skills. In order to improve the overall beauty of the residential area, some buildings have built rainwater pipes into the wall, which invisibly increases the difficulty of building construction and brings great difficulties to later maintenance. The best solution is to hide the rainwater pipes in the corner of the building, and make the rainwater pipes beautifully treated to integrate with the facade.

3 building water-saving design

China is a country short of water resources, so saving and utilizing water resources is very important for the economic development of China. In the process of architectural design, scientific planning and strict construction should be carried out to ensure the transmission rate of water supply and drainage pipe network and prevent leakage. At the same time, in order to cooperate with the water-saving policy in the construction area, facilities such as rainwater collection and utilization, sewage recycling and reclaimed water reuse should be set up in the architectural design.

4 conclusion

Building water supply and drainage is an important part of building engineering and an essential content to realize building functions. The design and construction of building water supply and drainage should be more humanized. While ensuring scientific and reasonable design, we should take into account factors such as safety, environmental protection, energy saving and convenient use, and pay attention to the performance and quality of water supply and drainage pipelines.

Full consideration should be given to the later maintenance of water supply and drainage system, and maintenance space and ports should be reserved for maintenance personnel during design and construction. In addition, we should constantly sum up experience in practice, fully grasp the laws and characteristics of water supply and drainage, find problems in design and construction in time, cultivate employees' innovative spirit and problem-solving ability, and put forward effective solutions to existing disadvantages to ensure the scientific and orderly progress of building water supply and drainage engineering.

I believe that after the above introduction, everyone has a certain understanding of the problems and suggestions of building water supply and drainage design. Welcome to Zhong Da for more information.

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