Socket and spigot cement pipes are a very common type of cement pipe in urban construction pipelines. Besides choosing high-quality pipes themselves, to bring out the good performance of the pipes, it is necessary to strictly follow the correct construction steps. Especially for cement pipes deeply buried underground, once problems occur, the difficulty of handling them is relatively high. Let’s take a look at the correct construction steps for socket and spigot cement pipes together!
The correct construction steps for socket cement pipes:
Before carrying out the construction of socket and spigot cement pipes, it is necessary to first understand the relevant construction standards and requirements. From cleaning the mouth, applying slurry to filling the joints, all must be done properly to ensure that the construction foundation is up to standard. At the same time, maintenance should be paid attention to. This can ensure that the cement pipes will not be damaged during the construction process. As long as the cement pipes are not damaged, it is very difficult for leakage to occur during use.
2. According to the conditions of the soil foundation at the bottom of the trench, sand, gravel or C20 concrete can be used as the pipeline foundation as per the design requirements. The width of the gravel and sand foundation should be spread based on the width of the trench excavation, and an appropriate amount of water should be sprinkled to level it. The thickness and width of the concrete foundation should be constructed in accordance with the design requirements. The concrete should be compacted and leveled with a flat plate vibrator.
Construction of cement pipes
Before laying pipes, the height of the sample should be rechecked, the centerline of the pipe section, the position of the pipeline, and the elevation of the placed pad should be determined. The correct sequence of pipe arrangement should be from downstream to upstream, with the spigot facing upstream and the socket facing downstream. At the interface between the well and the pipe, half-section short pipes should be used. Those with spigot should be arranged in the inflow direction of the pit well, and those with socket should be arranged in the outflow direction of the guest well.
4. Regarding the handling of joint issues, since it is inevitable that two cement pipes will be joined during the construction of socket and spigot cement pipes, attention should be paid to the sealing of the joints during this process, and corresponding sealing measures should be taken to prevent water leakage.
When excavating the trench, there are two methods: straight trench support excavation and slope excavation. The support for straight trench excavation is divided into two types: horizontal row plate support and steel sheet pile support. Since the length of the reinforced concrete socket pipe is 2.0 meters, when providing horizontal support, attention should be paid to the horizontal distance to ensure the required distance for lifting the cement pipe at the socket. Before the excavation of the trench, dewatering at well points should be selected based on the soil conditions. After the trench is excavated, open ditches should be set up at the bottom of the trench to ensure that there is no water accumulation in the trench.
The sizes of the pipes on both sides of the socket and spigot cement pipe are different. This type of pipe is made into a socket and a spigot (the spigot generally does not need to be specially made) at both ends of the pipe to connect the pipe or pipe fittings or to fork the pipe. The spigot is inserted into the socket and then the joint is sealed, which is convenient for construction. The following shares the key points and precautions for the construction of socket and spigot cement pipes.
When carrying out the construction of socket and spigot cement pipes, relevant regulations should be followed. Whether it is cleaning, grouting or grouting, all must be in place. It should be noted that the construction foundation must pass through and be well maintained. Only by doing all these well can we ensure that the cement pipe is not damaged during the construction process. During the construction process, as long as the cement pipes are not damaged, there will naturally be no leakage.
According to the homogeneity of the soil at the bottom of the trench, gravel or C20 concrete can be used as the pipe foundation as per the design requirements. The width of the gravel and sand foundation should be spread out according to the width of the trench excavation and sprinkled with an appropriate amount of water for vibration. The thickness and width of the concrete foundation shall be constructed in accordance with the design requirements, and the concrete shall be vibrated and leveled with a plate vibrator.
Before laying the pipeline, the elevation of the sample should be checked, the centerline of the pipe section and the position of the pipeline should be determined, and the elevation of the pad should be set. The piping sequence should be from downstream to upstream, and from the socket to the upstream direction. The socket is in the downstream direction. The connection between the well and the pipeline adopts half-length pipes. Sockets with sockets should be arranged in the water inlet direction of the cellar well, and sockets with sockets should be arranged in the water outlet direction of the passenger well.
Joint issues: During the construction of socket and spigot cement pipes, it is inevitable that two cement pipes will be connected. During this process, pay attention to the sealing of the joint to prevent water leakage.
Wholesale and customized cement drainage pipes
The above are the four steps and requirements for the correct construction of socket and spigot cement pipes. During construction, on the one hand, we must ensure that the quality of the selected cement pipes meets the standards; on the other hand, we must also strictly follow the correct installation methods for construction. This is very important for normal use in the later stage! When installing cement pipes with socket and spigot joints, just like other pipes, it is generally required that the socket face the water source. This is mainly done for two considerations: one is to reduce the resistance of water flowing in the pipe, and the other is to prevent firewood, grass and other debris in the water from getting stuck in the gap of the socket and spigot joints. Therefore, in practice, it is always required that the socket face the water source.