This document is the TN 5.06_C Culvert Sliplining with HDPE Pipe. Overview, host pipe considerations and installation provided with photographs and descriptors.

An abrasive or corrosive environment can cause premature deterioration of some types of pipe. In lieu of a total replacement, sliplining the existing pipe with a durable material may be an economical method to significantly extend the service life. Polyethylene pipe, because of its resistance to aggressive environments, is often the product of choice to slipline deteriorated pipes. This technical bulletin describes the site and installation considerations that must be evaluated before using HDPE pipe in these applications.

The “host” pipe may be open on both ends, as in a culvert application, or it may be accessible only through a manhole opening, as in a storm sewer application. Open-ended applications are more appropriate for HDPE pipe products, provided they do not require the pipe to be bent in order to enter the host pipe. If access can only be made through a manhole, HDPE pipe products may not be acceptable because they cannot be bent sufficiently. The diameter of the host pipe is explained with table.

Length of installation, hydraulic considerations, structural requirements and installation of HDPE in host pipe discussed. Insertion forces and grouting procedures are explained.