Mapping History

by Rebecca Balcom, Principal; Golder Associates, Calgary, Alberta, Canada,


Serial Information: Civil Engineering—ASCE, 1996, Vol. 66, Issue 10, Pg. 54-56


Document Type: Feature article

Abstract: Difficult, environmentally sensitive terrain combined with the fact that Canadian Western Natural Gas's new Banff pipeline will be laid in archaeologically rich ground posed a challenge to engineers. They tackled the problem with a wiley GIS solution. For 45 years, Canadian Western Natural Gas has been supplying natural gas to consumers in the Bow Corridor through the Rocky Mountains of southern Alberta, most recently via a pipeline that ranges from 219 mm (8 in.) in diameter to only 168 mm (6 in.) in diameter into the town of Banff. Unfortunately, there is only a single pipeline serving this customer population of approximately 7,000, which leaves them no backup in the event of a problem. To solve the problem, Canadian Western has invested in a pipeline-looping project that is calculated to secure the gas supply for the next 20 years. Plans are to use both the existing line and a new loop to serve the Banff area as well as provide backup for gas supply. Started in 1990, the 95 km (59 mi.) project has been divided into five phases. Construction on the first three phases, which traverse rural areas exhibiting relatively flat topography, is now complete.

Subject Headings: Canada | Geographic information systems | Pipes | Installation | Natural gas | Archaeology | Subsurface investigations

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