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DRAINAGE HANDBOOK STRUCTURAL DESIGN PROCEDURE FOR CORRUGATED POLYOLEFIN PIPE

 

Joe Babcanec, P.E., Dan Currence, P.E.

# 2021 Amsterdam

The newly released Drainage Handbook provides complete guidance on corrugated polyolefin pipe. Perhaps the biggest contribution this new handbook makes to the advancement of both HDPE and PP corrugated plastic pipe is the design procedure presented. The design procedure reflects the industry’s recommended practice for using the American Association of State Highway Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications [2] methodology currently utilized for bridge design by Departments of Transportation (DOTs) in the United States. The LRFD procedure utilizes numerous load and resistance factors in the design process to evaluate the performance of buried pipe as various limit states are evaluated. The result is a very comprehensive design analysis with multiple layers of conservativism built into the results. In the drainage handbook, the industry applied the LRFD design methodology that most accurately reflects how corrugated plastic pipe is installed in North America. The companion document to the Structural Design chapter, the Design Guide, walks an engineer through the detailed calculation procedure for two unique pipe design scenarios.

In this paper, key details of the structural design procedure in the drainage handbook will be discussed, and one of the examples from the Design Guide will be presented.

Related keywords : Structural Design, Handbook, LRFD, Corrugated, HDPE, PP.
Please note that the whole article content is available on PPCA website only

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