The existing Belmont North Interceptor suffers from infiltration and inflow problems and operates under surcharged conditions during periods of heavy rainfall. To address this problem, the City of Indianapolis had planned a gravity relief interceptor to provide additional conveyance
capacity. Initial project costs based on the Advanced Facility Plan, including planning and design fees, construction, and construction inspection, were estimated at 144M. Through the value engineering process, five cost-reduction ideas were evaluated in great detail. These ideas included
realigning the relief sewer, using siphons to raise the sewer profile, and converting a portion of the gravity sewer to a force main and adding a lift station in a City-owned park. Working through both the cost and non-cost implications, the City realized a savings of approximately 50M by
adding a pump station and force main to the project.
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