The Tarrant Regional Water District (TRWD) with the City of Dallas Water Utilities (DWU), are currently engaged in the planning, design and implementation of a 350 MGD raw water transmission system, which will run across north central Texas from Lake Palestine to Lake Benbrook, with connections to Cedar Creek Reservoir, Richland Chambers Reservoir and a Dallas delivery point. Collectively, the system consists of approximately 145 miles of 84-inch to 108-inch pipeline, a 5-mile 120-inch diameter tunnel, three 150 to 275 MGD lake intake pump stations, three 200 to 350 MGD pump stations two of which include 80 MG suction reservoirs, one 450 MG balancing reservoir and ancillary facilities. The program developed by TRWD and DWU to accomplish these improvements is called the Integrated Pipeline Project (IPL). At the onset of the IPL, the project teams were given the mission to deliver this complex program in a sustainable manner by balancing the triple bottom line of “people, planet and profit” or “social, environmental and economic”. As part of the efforts to optimize design functionality against the “profit” component a series of value engineering studies were conducted at key milestones along the project delivery schedule. Formal value engineering workshops were held at the end of the program’s conceptual study to help guide further definition of project components and design scopes. The project was considered in three major areas: pipeline, booster pump stations and balancing reservoir facilities, and lake intake pump station facilities. Value engineering workshops for each of the components of design were conducted at preliminary design and progress design stages. Informal value engineering for each sub-project was collaboratively conducted through component concept reviews and milestone design reviews. The paper discusses the use and results of Value Engineering for a cross country water transmission line project with particular attention to the balancing reservoir sub-components of this system which through “VE” realized a range of savings of 30% to 50% of project budget on a delivered unit basis. Pipelines 2015 1711

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Published on 01/01/2015

Volume 2015, 2015
DOI: 10.1061/9780784479360.156
Licence: CC BY-NC-SA license

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