Drop Shafts for Narragansett Bay Commission CSO Abatement Program, Providence, RI
Abstract
Seven pairs of drop and ventilation shafts, between 2 and 9 feet in diameter, will convey combined sewer flow to a 230-foot-deep, 26-foot-diameter storage tunnel. This paper presents case histories for each site. Discussion includes functional requirements, program and site access constraints, structural design, geology, the variety of excavation and lining construction methods used, and lessons learned.
2007
Rapid Excavation and Tunneling Conference (RETC) Proceedings
Rafael C. Castro
Jacobs Associates
Geoffrey Hughes
Louis Berger Group
Fredrick “Rick” Vincent
Jacobs Civil
Philip H. Albert
Narragansett Bay Commission
