Investigations into the Structural Performance of Clay Pipes

by C. E. G. Bland, Clay Pipe Development Assoc, Clay Pipe Development Assoc,
K. J. Sheppard, Clay Pipe Development Assoc, Clay Pipe Development Assoc,



Document Type: Proceeding Paper

Part of: Advances in Underground Pipeline Engineering

Abstract: Over the past 8 years, the Clay Pipe Development Association (CPDA) has commissioned non-destructive physical testing of vitrified clay pipelines. The diameters of the pipes have varied from 100mm to 800mm. This paper discusses a test program under association sponsorship of 800mm-diameter pipes. It was also recognised that pipe performance for large diameter pipes based on the Marston/Spangler approach was likely to be conservative. It was intended to establish the likely degree of this conservatism by physical testing under practical laying conditions. This work represents the first known full evaluation of the stresses in larger diameter clay pipes on minimum beddings. Subjects covered include test materials, procedures and results.

Subject Headings: Pipelines | Clays | Soil analysis | Finite element method | Material tests | Structural analysis | Load factors | Soil tests

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