Metal and Plastic Pipelines: Design and Construction Aspects

by Hari D. Sharma, Fluor Canada Ltd, Calgary, Alberta, Canada,
William Y. Luk, Fluor Canada Ltd, Calgary, Alberta, Canada,
Allan Crawford, Fluor Canada Ltd, Calgary, Alberta, Canada,



Document Type: Proceeding Paper

Part of: Advances in Underground Pipeline Engineering

Abstract:

This paper discusses design and construction aspects of four cross-country pipelines that were built in central Alberta, Canada during 1982-1983. The first two pipelines, carrying different grades of ethylene glycol, were installed in a common trench, and were of steel. The other two pipelines were of polyethylene construction except for the last one kilometer down at the river valley where carbon steel was used. The paper first discusses the geotechnical investigations and route selection studies carried out for these pipelines. Design considerations regarding trench slopes and right-of-way requirements, trench backfill material and compaction, highway and road crossing design are presented. Construction problems associated with these design aspects including the welding of the stainless steel pipes are briefly described. Finally, a brief design and construction comparison between the metal and plastic pipelines is presented.

Subject Headings: Plastic pipes | Steel pipes | Steel construction | Pipe materials | Trenches | Pipeline materials | Plastic design | Canada | Alberta

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