Design of Non-Pressure Very Flexible Plastic Pipe

by R. C. Prevost, Brussels Waterworks, Belg, Brussels Waterworks, Belg,
K. K. Kienow, Brussels Waterworks, Belg, Brussels Waterworks, Belg,



Document Type: Proceeding Paper

Part of: Advances in Underground Pipeline Engineering

Abstract:

There is considerable debate about the correct structural design procedure to be used for very flexible plastic pipe (VFP) - typically glass-fiber reinforced pipe (GRP), reinforced plastic mortar (RPM), and smooth or profiled wall PVC and HDPE. The debate is focused primarily on predicting and limiting pipe deformation, and on the strain factor. The basis of design remains Spangler's formula with some modifications. Successful results with Spangler's formula have not always been the case for very flexible pipe, and as a result doubts have been cast on the validity of the formula. The problem is studied in this paper from the perspective of the 'user', whose predominant concern is that the facilities he needs are constructed, can be operated over long periods of time satisfactorily, and are the least cost alternative.

Subject Headings: Plastic pipes | Flexible pipes | Pressure pipes | Soil-pipe interaction | Structural design | Synthetic materials | Strain

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