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HDPE Pipe Underground Installation Method

HDPE water pipe installation and HDPE drainage pipe installation are done underground by this method. Trench installation involves digging a trench into which the HDPE pipe is placed, then backfilling after installation. There are several steps in this process.

Follow the steps below for the HDPE trench installation preparation method:

1. When constructing a trench, pipe size, surface condition, burial depth, surface load, pipe SDR, trench length, and groundwater elevation will all need to be considered to meet code requirements.
2. For unstable trench floors, fix them by dewatering them. However, if this is not possible, you can add crushed rocks. It is important to ensure that the trench floor is smooth and free of rocks, ridges, hollows, and lumps.
3. The bottom of the trench should be padded with about four to six inches of tamped bedding material. It should also be free of sand, gravel, or clayey sand.
4. HDPE pipe should be placed by hand around 8” in diameter. The equipment should only be used for moving, lifting, and lowering. It should not be dropped, thrown, pushed, or rolled into the trench.
5. For angled embedment, use a shovel to cut and throw a crushed stone to place around the pipe. If the material, however, is naturally occurring, such as a mixture of sand and fines, it shall be in lift and shall not exceed eight inches in thickness. After placement, they should be tamped using a mechanical tamper.
6. After laying the HDPE pipe, backfilling is the next step to keep the pipe out of line and protect it from external damage, among others. The backfill should be approximately 6 inches below the pipe haunch from the PE pipe. Lifts should be placed evenly on the sides of the pipe while ensuring that there are no large, hard objects hit the pipe. For the final backfill, there should be at least one foot of backfill cover on the pipe before compaction.

For More Information About HDPE Pipe Install and Repair: https://plumbingadvi...ion-and-repair/

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