Double wall corrugated pipe construction manual

Construction points of double-wall corrugated pipe 1. Excavation of trenches. The net width of the bottom of the trench is generally determined according to the size of the pipe diameter. When the pipe diameter is greater than 450mm, the net width of each side of the pipe should not be less than 500mm. When the pipe diameter is less than 450mm, the net width of each side should not be less than 300mm. In order to avoid the bottom of the groove being soaked in water, drainage measures must be taken before opening. If artificial drainage is used, it can be excavated when the water level drops below the bottom of the groove.

Second, laying a cushion. Double-wall corrugated pipe construction contact, Hubei double-wall corrugated pipe, before the installation of the pipeline, the need to lay the cushion, the thickness should also meet the design requirements, for better soil foundation, the bottom of the groove laying a layer of medium coarse sand cushion can be, the thickness is generally 10mm; for poor soil foundation, you can use layered laying, the upper layer using medium coarse sand, the thickness should be greater than 50mm, the lower layer using a thickness of 100mm-150mm crushed stone.

III. Installation and connection. Double-wall corrugated pipe construction contact Hubei double-wall corrugated pipe manufacturer, Hubei AD Building Materials Co., Ltd. HDPE double-wall corrugated pipe should be strictly inspected before laying the lower pipe. Pipes that do not meet the standards are strictly prohibited from being lowered. The nozzles at the end of the pipe are divided into sockets and sockets. The sockets should be installed in the direction of water flow, and the sockets should be installed in the direction of countercurrent flow. When interfacing, first clean up the inner wall of the nozzle, and then apply silicone oil and other lubricants on the socket and socket rubber ring, and finally keep the central axis of the nozzle aligned. Double-wall corrugated pipe, wuhan pe double-wall corrugated pipe manufacturer.

Fourth, masonry inspection wells, the bottom foundation of the well should be poured at the same time as the bottom foundation of the pipe; generally circular inspection wells adopt wall masonry, and the method of swinging bricks with small inner seams and large outer seams plugs broken bricks into the outer ash seam to reduce the amount of mortar. The vertical ash joints of the upper and lower skin of each layer of bricks should be staggered; finally, the connection between the pipeline and the inspection well should be based on a flexible foundation, which is also different from the traditional pipeline.

5. Water closure test

Water closure test After the installation of the pipeline is completed, the water closure test should be carried out to check the tightness of the water injection state of the pipeline. During the inspection, water should be filled into the pipeline first, so that the water pressure of the upstream pipe section is maintained at 2 meters. The appearance of the pipeline to be tested in the experiment shall not have water seepage, let alone water leakage and water running. If the above phenomenon occurs, the experiment should be stopped immediately, the fault should be checked and the pipeline should be reinstalled for water closure test until the standard is reached.

double wall corrugated pipe construction contact, Hubei AD Building Materials Co., Ltd. is at your service, AD brand double wall corrugated pipe, Jingjie double wall corrugated pipe, Wuhan corrugated pipe, Hubei double wall corrugated pipe manufacturer