With the increase of urban development scale and the improvement of the overall level, building drainage has become a very important work in urban construction. The following is what I collected for you. Welcome to read the reference!

Discussion on equipment management strategy of water supply and drainage construction in building engineering

With the construction of more and more residential quarters, there are many water supply and drainage problems in construction projects, which not only affect the normal life of residents, but also seriously affect people's image of enterprises. Therefore, it is necessary to effectively deal with the water supply and drainage problems in construction projects, prevent various hidden dangers in water supply and drainage, and thus ensure the quality and level of water supply and drainage construction in construction projects. According to the practical experience and the analysis of the problems existing in the water supply and drainage system, the corresponding equipment management strategy is put forward, which is highly targeted.

Construction engineering; Water supply and drainage; Construction equipment; Management; tactics

1 Introduction

Municipal water supply and drainage, as an important urban infrastructure, consists of water supply system and drainage system. The water supply system consists of fire water supply pipeline, domestic water supply pipeline and production water supply pipeline, and the drainage system consists of production and domestic sewage discharge pipeline, clean underwater pipeline and rainwater drainage pipeline. These complicated pipelines are laid underground, and the wiring of the pipelines is long and wide. If there is a safety problem, it will affect the normal operation of other equipment, and even affect the normal production and life.

2 water supply system construction management problems and treatment measures

2. 1 water supply pressure test

After the installation of domestic water supply pipeline, the construction personnel directly hide, which is easy to cause water leakage. In order to prevent this from happening, water supply pressure test should be carried out. During the pressure test, make sure that all valves are open, show all potential leakage hazards, and check whether the pressure gauge is qualified. It is forbidden to use unqualified products. You can make sure that the valves are open by turning all the branch valves and determining whether there is underwater sound.

2.2 Installation of water separator

In kitchens and bathrooms with large water consumption, the water separator should be used appropriately according to the actual situation. In the process of pipe laying, multi-branch pipes should be used for one-way pipe laying, and each water distribution pipe should be directly connected to the connecting line between the water distribution point and sanitary ware and faucet, so as to minimize the number of branch pipes and thus reduce the possibility of water leakage.

2.3 overflow pipe of living pool

When the diameter of the overflow pipe of the pool is smaller than the diameter of the water inlet pipe and the net cover is not installed, in this case, once the water level controller fails, it is easy to cause excess water not to be discharged from the overflow pipe smoothly. Therefore, in the construction, the diameter of the overflow pipe should be determined according to the maximum flow of the drainage reservoir, which can be slightly larger than the inlet pipe.

2.4 Pressure reducing valve in water supply system

If there are no valves before and after the pressure reducing valve in the water supply system, the pressure reducing valve will not be repaired. If no filter is installed in front of the pressure reducing valve, impurities in the water can easily block the pressure reducing valve. Therefore, valves should be installed before and after the pressure reducing valve in the water supply system to prevent the pressure reducing valve from being blocked by sundries and to ensure its normal operation.

2.5 Installation of water meter and valve

The installation of water meters and valves should be convenient and beautiful, and certain protective measures should be taken to pay attention to the safety of residents. This requires that the water meter should be installed in a place that is easy to maintain and free from exposure and pollution, and the water meter and valve should be installed horizontally.

3 drainage system construction management problems and treatment measures

3. 1 floor drain construction

During the installation of floor drain, it is necessary to keep the indoor floor drain installation consistent with the ground. If it is too high, water will easily flow out from the floor drain, which will affect the use environment. Too low is easy to form pits, and it is easy to make dirt accumulate on the floor drain, which affects the cleanliness of the ground and is inconvenient to walk. For public toilets, grid floor drain is used to prevent blockage.

3.2 Selection of the location of the toilet drain

In the process of toilet installation, it is necessary to choose a suitable model and a reasonable position to meet the requirements of various toilet models for the position of the drain. This requires that the distance from the wall should be appropriate when installing, and at the same time, the distance between sanitary wares should be marked to prevent the shower from being installed. The distance between the drain and the wall is generally 300mm, and the distance between the drain and the wall before decoration should be 340 mm.

3.3 UPVC drainage pipeline construction

During the installation of UPVC drainage pipeline, protective measures such as casing should be set to prevent the casing from failing to meet the waterproof requirements and causing potential leakage. According to the requirements, the rigid waterproof casing should be buried when the drainage pipe passes through the above parts. When the diameter of the drainage riser is greater than or equal to 1 10mm, a fire ring should also be set at the floor crossing part.

3.4 Problems existing in the construction of construction personnel and treatment measures

Some construction workers connect indoor rainwater pipes to domestic sewage pipes or use rainwater falling from the balcony during construction, which may lead to the rainy season exceeding the drainage capacity of domestic sewage pipes, causing sewage overflow and affecting environmental sanitation. Code for Design of Water Supply and Drainage in Buildings stipulates that rainwater pipes in buildings should be discharged separately, and rainwater in the sky should be separated from balconies to prevent sewage from overflowing in rainy season.

3.5 Drainage branch pipe

In the process of installing the drainage branch pipe, in order to adapt to the position of the reserved opening and the size of the connecting pipe, the construction personnel made the drainage branch pipe with no slope, small slope or even inverted slope. This will lead to poor connection between the sewer and the sanitary ware branch pipe, poor drainage of the drainage pipeline, and serious blockage. Some measures should be taken to prevent the drainage branch pipe from being blocked.

4 problems existing in the construction of fire water supply system and treatment measures

4. 1 Problems existing in fire hydrant valve and treatment measures

In the process of installing fire hydrants, pressure relief devices such as pressure relief holes should be installed in the water supply system as required. If there is no pressure relief device in the setting, the hydrostatic pressure of the hydrant bolt will be too high. Because of the high hydrostatic pressure at the plug mouth for a long time, it is easy to damage the hydrant plug valve and will be difficult to use in case of fire. According to the regulations, when the outlet pressure of hydrant bolt is greater than 0.5Mpa, pressure relief devices such as pressure relief orifice plates should be set. When the hydrostatic pressure of hydrant bolt mouth is greater than 0.8Mpa, the water supply system in different tanks should be adopted. These measures can effectively reduce the high static pressure of the plug and prevent the plug valve from being damaged.

4.2 Problems and treatment measures in pipe network construction

The pressure test of pipe network is divided into two items, one is strength test and the other is tightness test. In the process of construction, some construction workers only carry out strength tests, or only carry out leakage tests, or even do no tests at all, which will bring serious security risks to the normal implementation of the whole fire protection system. Therefore, quality acceptance, strength test and leak test must be carried out in the construction process as required.

4.3 Problems and treatment measures of automatic sprinkler system pipe network

The pre-embedding requirements of the pipe beam-piercing casing in automatic sprinkler system are higher than those of ordinary drainage casing. Because all the sleeves of each branch pipe need to be on the same straight line, if the sleeves are displaced or rotated during installation, the threads will not be butted in the later branch pipe installation, which increases the engineering difficulty and makes it difficult to repair. Therefore, generally speaking, for the thicker beam main reinforcement, the beam is hoisted and fixed with U-shaped steel bars on both sides that can withstand pressure. For small beam main reinforcement, X-shaped supporting reinforcement shall be erected on both sides of the beam which will deform under pressure.

4.4 Problems existing in check valves and treatment measures

When the fire hydrant is testing water, the fire pump usually runs normally, but the pressure of the top test gun is not enough. One case is that the check valve is not installed correctly, mainly due to the carelessness of the construction personnel or the wrong flow direction in the design drawings, both of which will lead to the installation error of the check valve. On the other hand, to check whether the check valve is in good condition, the usual method is to close the gate valve of the fire outlet of the pool, and judge whether the check valve is good or bad by seeing whether the water pressure rises or whether there is anti-water phenomenon at the fire outlet of the pool. When the check valve is damaged, it should be replaced or repaired immediately.

5 equipment management strategy

* * *1* * Before the installation of the equipment, conduct a comprehensive inspection of the existing equipment and organize experts to carry out daily maintenance of the equipment. Do a good job in using and maintaining the equipment. The dispatching management of equipment should not only consider the influence of hydrology and weather and the requirements of total construction period, but also consider the production capacity of leading construction machinery and supporting machinery. In addition, winter construction should be avoided as far as possible, which will not only increase the project cost, but also increase the wear and tear of water supply and drainage equipment. Through reasonable equipment organization, using the progress difference between subprojects, similar equipment is scheduled between subprojects in order to do a good job in equipment maintenance.

***2*** Do a good job in the use and maintenance of equipment. The use of water supply and drainage equipment should strictly abide by the safety operation procedures. If the equipment is abnormal in use, it should be stopped for inspection and reported to the equipment maintenance personnel in time. Overtime occurs from time to time in engineering construction. For the important equipment under construction, personnel should be regularly organized to carry out inspection and maintenance, so that the equipment is always in good working condition.

***3*** Do a good job in equipment maintenance and technological revolution. If there are many similar projects and conditions permit, more assembly parts can be stored, which not only saves raw materials, improves efficiency, but also ensures the quality of the project.

* * * 4 * * After the project construction, the device should be fully restored and maintained. After each working procedure, the machinery used should be thoroughly inspected, and the water supply and drainage devices with problems should be repaired in time. For the equipment with poor technical conditions and difficult on-site maintenance, it should be repaired by a special repair shop or maintenance department, so that the equipment is in good condition after the project is completed.

refer to

[1] Deng Jingui. Analysis on prevention and control of water supply and drainage construction quality problems [J]. Henan Science and Technology, 20 10, * * * 4 * *.

[2] Zhao Baoshan. Discussion on some problems in the design and construction of building water supply and drainage [J]. Water supply and drainage trends, 2008.

[3] Residual current. Common quality problems and treatment methods of indoor water supply and drainage installation engineering [J]. China Architectural Information, 2005.

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