PVC in Small, Low-Hazard Dam

Message: PVC is not used for slip lining, although it can be used as a replacement outlet, generally for low hazard, small dams.

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PVC pipe is not as commonly used due to concerns with lack of watertightness and other inherent disadvantages. The major disadvantage with PVC pipe is the bell and spigot joint connections. This type of joint connection has the potential for leakage or can separate as the embankment dam settles. The bell and spigot joint integrity must be tested for leaks to ensure that the gasket has not rolled off during installation. Use of PVC bell and spigot joints should only be considered for nonpressurized, low hazard dam applications. PVC is typically available in sizes up to 48 inches in diameter.

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  Pressure testing PVC pipe. PVC needs to be pressure tested due to the bell and spigot joints.

Note: The content on this page was originally created as part of DamOutletWorks.org (DOWL, 2018). It has subsequently been updated and reformatted as part of the Dam Safety Toolbox.
Revision ID: 3178
Revision Date: 09/15/2022