Water for Ahwatukee

by Kent Pease, P.E., (M.ASCE), Sr. Engr., Proj. Representative; Haley & Aldrich, Inc., Boston, MA; Lee Brush, Stanley Consultants, Inc., Phoenix, AZ,


Serial Information: Civil Engineering—ASCE, 2002, Vol. 72, Issue 3, Pg. 58-63


Document Type: Feature article

Abstract:

Scheduled for completion in August, the South Mountain Water Facilities pipeline will increase drinking water capacity to the community of Ahwatukee Foothills, a rapidly growing south Phoenix suburb, by connecting the Ahwatukee Foothills reservoir with the South Mountain reservoir. The $58-million pipeline project requires two pump stations and 17 mi (27 km) of prestressed-concrete cylinder pipe. Segmented into seven reaches, the project's most intricate section involved digging a tunnel through a mountain that is also the site of a major city park. Additionally, the presence of soil within what had been expected to be an all-rock tunnel required changes to the initial design and complicated the process of selecting an appropriate tunnel boring machine.

Subject Headings: Water pipelines | Tunnels | Mountains | Reservoirs | Pumping stations | Project management | Pipelines

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