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Innovative New Drainage Pipe

by J. Paul Tullis, Utah State Univ, Logan, UT, USA,
Reynold K. Watkins, Utah State Univ, Logan, UT, USA,
Steven L. Barfuss, Utah State Univ, Logan, UT, USA,



Document Type: Proceeding Paper

Part of: Pipeline Design and Installation

Abstract:

Hydraulic tests on corrugated HDPE pipe with a smooth liner show that its Mannings n-value is in the range of 0.009 to 0.015 depending on the smoothness of the liners. With the smooth liners, the friction loss is less than or equal to that of competitive products. The new product can withstand high external loads without distress to the pipe. The amount of ring deflection is primarily a function of the degree of soil compaction. The polyethylene material relaxes with time, relieving the stress in the pipe and allowing the soil to take its full share of the vertical load.

Subject Headings: Plastic pipes | Pipeline hydraulics | Buried pipes | Vertical loads | Pipe materials | Soil-pipe interaction | Pipeline materials

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