Both polyvinyl chloride (PVC) and high-density polyethylene (HDPE) conduit systems are cost-effective; however, there are considerations other than material cost that you should take into account when making your selection.
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
One is the capability of your installation crew. PVC is easy to work with and can be carried in the back of a pickup, but it can take longer to install. HDPE, on the other hand, can be rolled out quickly but it comes on large reels that may require the use of a special-purpose trailer.
Another consideration is the number and size of the bends required in your design. PVC runs need to be as straight as possible, with gentle sweeps where required using manufactured bends. Even for PVC rated for direct bury, it is recommended that bends with a curvature radius of less than 80 feet be encased in concrete. This is to avoid the possibility of the joints separating during cable pulling operations.
Alternatively, continuous runs of HDPE can handle bends without encasement, but HDPE tends to suffer from another problem. Because it is delivered on reels, HDPE will not roll out flat. Ideally, the HDPE should be rolled out next to the open trench and allowed to sit in the sun until the serpentine curves relax before being installed. This will help to minimize friction during cable pulling operations.
Dig Deeper on Telecom Resources
Related Q&A from David Hashman
Waning interest in fiber to the home (FTTH) has led to mobile backhaul becoming the main driver of fiber deployment. Will this trend continue? Fiber ...continue reading
Fiber expert David Hashman breaks down the primary cost factors and typical equipment and outside plant expenses associated with deploying fiber to ...continue reading
Fiber expert David Hashman details the key design and other elements to consider when deciding whether to deploy a passive optical network (PON) or ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.