Technical Blog

Welcome to John’s Blog. Answers to frequently asked questions are periodically posted here. The objective is to share information about PVC pipe with readers as well as with utilities, design engineers and pipe installers. The blog provides the latest information on PVC pipe design, installation, and application for water and wastewater infrastructure projects.

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John Houle: Senior Technical Consultant, PVC Pipe Industry

John Houle holds a Master’s Degree in Civil Engineering from the University of Missouri and an MBA from the University of Oregon. He has more than 25 years of experience in the plastic pipe industry in applications engineering, market development, forensic analysis, technical writing, and standards development.

PVC Pipe Joints - Trenchless Options

Posted By John Houle on Oct 13, 2017

In trenchless installations, pipes are typically pushed or pulled into position. This pushing or pulling causes loads on the pipes that are not encountered during open-cut construction. As a result, the PVC pipe industry has developed four types of restrained-joint systems for trenchless projects.

The four joining systems are:

1. Internally restrained gasketed joints

2. Ring-and-pin gasketed joints

3. Spline-lock gasketed joints

4. Butt-fused PVC joints

For my Tech Brief on these PVC pipe joints, click here.

These restraint systems are not limited to trenchless installations. They are often used in open-cut situations where restraint is required.