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Title: Evaluating The Cost Effectiveness Of Steel Vs. Polyethylene Large Diameter Pipe
Author: Sidney J. Davis
Source: American Gas Association 1992
Year Published: 1992
Abstract: The use of polyethylene (PE) pipe by gas utility companies as a replacement for corroded steel systems and new mmns has generated data about the benefits and value of PE as a pipeline construction material. Most of this data is based on small diameter piping systems. In contrast, this paper compares installation costs of large diameter (6, 8 and 12) steel and PE pipe. Costs for installing the steel and PE systems are determined by comparing the relative costs of installing two hypothetical pipelines: one cross-country and one urban pipeline. Although hypothetical examples are used, the comparisons are realistic because of Carnegies past experience installing similar PE and steel systems. Specifically, the cross-country pipeline is being constructed in rolling terrain with some steep slopes and long narrow ridges like that often found in northern West Virginia. Approximately 60% of the right of way is wooded with some heavy brush and large trees. Pasture and meadows account for the remaining 40% of this terrain. Fifteen percent of the ditch may be in shale rock plus some solid rock. The urban pipelines terrain is also rolling, but unlike the cross-country construction, this area is primarily residential with some small businesses. The pipeline is constructed in the sidewalk, some lawns and across streets.

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