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January 4, 2025
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The way you install HDPE pipes will have an impact on their durability and optimal performance. Known for being flexible, strong and corrosion-resistant, HDPE pipes have become the preferred choice for a variety of applications. With the updated guidelines in the AWWA M55 Manual, users now have access to refined recommendations for design and installation, making the process more reliable and efficient. To help you get it right the first time, we’ve outlined best practices and tips for a successful installation process.
Planning is essential before beginning the installation process. Begin by examining the site circumstances and developing a thorough, step-by-step installation plan. Understanding trench width, soil classifications, and compaction requirements is critical to the installation’s success. Additionally, make sure that all tools and equipment are available and in good operating order. Proper planning reduces delays and helps to avoid costly mistakes
A crucial stage is properly excavating the trench. As per AWWA M55, the trench needs to be sufficiently wide to fit the pipe and allow for backfill; the extent of the gap might change based on the facility’s size. Pipe up to 24 inches in diameter requires very little embedding or bedding for simple installations. Conversely, for tougher conditions, soil testing and accurate trench wall support are necessary for engineered installations. Sand or fine gravel are examples of bedding materials that can be used to create a sturdy base and shield the pipe surface from sharp things.
There are several ways for joining HDPE pipes, the most popular of which being butt-fusion and electrofusion. Before applying heat to the pipe ends, make sure they are clean and flush. Follow the manufacturer’s recommendations while doing electrofusion to ensure that the joint is properly formed. The M55 handbook emphasizes the significance of pressure testing joints to ensure their strength and leak-free functioning. Both procedures result in long-lasting connections, so it’s worth spending the time to ensure the joint is properly fitted.
Once you’ve positioned the pipe in the proper spot, carefully backfill the trench to avoid harming it. To do this, use the same bedding material as in the first layer, ensuring sure it is equally compressed around the pipe. After backfilling, do pressure tests to confirm the system satisfies industry requirements. The following tests can be performed: deflection, buckling, and compressive stress.
Installing HDPE pipes can be easy if you follow practical recommendations. From thorough preparation to post-installation testing, every step is important to ensure a successful installation. For high-quality HDPE plastic pipes, trust Legacy HDPE to provide durable solutions for your projects. Contact us today to learn more about our products and services!
