Tuesday 3:30 PM
[Presentation PDF]

Room: Capitol III

Pumping Downhill Can Be a Good Solution: Unique Challenges to Pumping Downhill - A Hydraulic Transient Analysis Case Study for the City of Indianapolis

As part of the City of Indianapolis' Belmont North Relief Interceptor project, a 38 mgd lift station, 28,000 foot long 42-inch diameter force main, and a standpipe (downstream receiving structure) are under construction, resulting in one of the City's highest capacity "regional" collection system pumping facilities. Rather than utilizing deep (up to 35 feet), large diameter (66___) gravity sewers to convey the design flow, a unique solution was developed to pump the wastewater downhill through a smaller diameter (42___) and shallower force main. Hydraulic transient (water hammer or surge) analyses are normally performed on large diameter, long length force mains with intermediate high points. The unusual hydraulic grade line created by the standpipe coupled with multiple peaks and valleys of the force main profile created unique hydraulic transient issues to be resolved. This presentation is a case study of the various transient analyses modeled with different surge control devices and the ultimate solution developed.

Moderator:  Lou Storino


Randy L. Vanderwerf - Clark Dietz, Inc.

Mr. Vanderwerf is a senior environmental engineer that specializes in conceptual planning, design, and construction administration of water supply and wastewater treatment systems for municipalities. His projects have included treatment plants, pumping stations, transmission and distribution pipelines, water wells, storage reservoirs, and flow control stations. He is experienced in hydraulic network modeling and system analysis, surge analysis, hydropneumatic systems design, wastewater plant processes, wastewater lift stations, sewer pipelines, and the preparation of feasibility studies, design reports, and specifications.

Omkar Ghavi - Clark Dietz, Inc.

Mr. Ghavi is an environmental engineer with experience in design of industrial and municipal wastewater treatment and water supply projects. He specializes in master planning, process modeling and simulation, and design of water / wastewater treatment facilities.  He has designed water distribution pipelines, sanitary force mains, lift stations and performed modeling and assessment of the impacts of hydraulic transients in the collection systems and water distribution systems. In addition, he has developed several feasibility studies, technical reports, permitting documents and other project deliverables to be submitted to the clients and state agencies.