Gas main installed under a major four-lane highway.
Pipeline & Gas Journal › Vol. 221 Nbr. 6, June 1994
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Summary
Directional drilling technology
BC Gas Inc. has been the first to use directional drilling technology to successfully install 2,720 m. of 219 mm. steel gas pipe under a heavily paved, four-lane highway in Richmond, B.C. The technique was used as a replacement to the open-cut method normally implemented in road crossings. In addition to enhanced public relations and greater focus on environmental safety, the undertaking produced significant cost savings amounting to as much as $350,000.See the full content of this document
Extract
Gas main installed under a major four-lane highway.
BC Gas Utility Ltd. and its contractor successfully used modern directional drilling technology to install 8,920 ft (2,720 m) of 8-in. (219 mm) steel gas pipe down the centerline of a busy four-lane connector in Richmond, B.C.
As in many cities in Canada and the U.S., older areas in Richmond are being redeveloped and rebuilt. High-rises, four-plexes and townhouses are replacing single-family residential dwellings. When this happens, gas flows increase and pressures decline proportionately. Richmond, located adjacent to the city of Vancouver, is a rapidly growing city with a population that is expected to exceed 170,000 people by the first decade...See the full content of this document
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