Fast-Track Design and Installation of a 30-inch Casing Pipe Crossing of the Ventura River
Abstract
This paper describes how and why a 3,300-foot, 30-inch diameter, inverted siphon was constructed in a fast-track manner to convey sewage across the Ventura River. Construction included a combination of horizontal directional drilling and pipe ramming techniques. A particular challenge was getting through alluvial materal in the riverbank areas, which are composed of loose sands, gravels, cobbles and boulders, to the more stable mudstone bedrock beneath. Regulations effectively prevented the drilling of exploratory holes within the river prior to construction. An innovative approach to gathering geotechnical data provided invaluable information to design engineers and bidders. Other design, contracting, and construction issues and hurdles are discussed.
2004
North American Society for Trenchless Technology (NASTT)
Conference Proceedings
John Correa
Ojai Valley Sanitary District
Glen Hile and Dan Ellison
Boyle Engineering Corporation
Craig Camp and Greg Raines
Jacobs Associates
Craig Prentice
Fugro West, Incorporated
