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.
External loads usually govern the design of non-pressure pipes. For PVC sewer pipelines, one of the acceptance tests to ensure proper installation has occurred involves pulling a deflection mandrel through the pipe. Product standards for PVC gravity sewer pipes typically provide calculation methods and tables for sizing of these mandrels.
AWWA standards, on the other hand, are intended for pressure applications – hence there are no mandrel discussions, calculation methods, or tables provided. The Technical Brief “Sizing of Deflection Mandrels for AWWA C905 Pipe” addresses this issue by explaining the calculation method and providing mandrel sizes for 14- to 48-inch CIOD pipe. To find out more, click here to read the Tech Brief.
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