Computer Aided Design of Butterfly Inlet Valves
Computer simulation of butterfly inlet valves (throughflow, lattice) in hydropower schemes is presented. The software is intended for practisting engineers to obtain significant parameters...
Digital Control of 180MW Francis Turbines: Controller Design, Simulation, and Operational Results
The features of a new hydro-power station are outlined as are some specifications that the customer required of a digital controller. Both hardware and software aspects of this recently...
Kaplan Blade Angle Controller
This paper describes a recently developed computerized Kaplan blade angle controller that is capable of improving turbine performance. Model Tests or Index Tests produce the Three-D-Cam...
McNary Powerhouse Generating Unit 14 Stator Core and Winding Replacement
The powerhouse contains 14 main generating Kaplan-blade units, each rated at 73,684 kVA at 0. 95 power factor. In early 1985 the decision to rewind and uprate Unit 14 was being finalized....
No. 1 Water Wheel Project, Gilman, Vermont
This paper describes the replacement of an old generating unit with a new unit in a turn-of-the-century mill building where three other such units were already operating. The key issues...
Design Improvements on a Small Hydro Project
The Whiskeytown Hydroelectric Project, built for the City of Redding, California, provides an excellent example of the type of improvements in general arrangement which can be achieved...
Hydropower Goes Downtown
Beneath a busy street in Southern California seems an unlikely location for a small hydroelectric generating plant. However, located just below El Segundo Boulevard in the town of El Segundo...
After L'Ambiance Plaza
In the aftermath of the tragic collapse of the L'Ambiance Plaza apartment building at Bridgeport, Conn., in April 1987, reforms are being proposed. In 1987 ASCE approved writing...
The European Underground
Three tunneling projects in Europe are described: a tunnel bored under two rivers in Lyon, France, a subway station constructed as a mined tunnel in Vienna, Austria and a tunnel mined...
Grout Supports Brooklyn Tunneling
At the Red Hook project in Brooklyn, microfine cement grout was injected from the surface to support underground tunneling. The hand-dug tunnel was built to connect to sewer pipes. Subsurface...
Subsurface Savings
Less conservatism than usual in designing building foundations is being accepted or demanded by some owners to save money. The article describes four examples of cost-cutting innovations,...
Planning, Design and Cost Estimates for RCC Dams
Engineers, planners, and officials of agencies responsible for developing water resource projects are confronted with preparing preliminary designs and cost estimates for dams. This paper...
Cedar Falls Roller Compacted Concrete Dam
This paper presents the design, material testing, quality control, and construction considerations applicable to a small Roller Compacted Concrete (RCC) dam. The Cedar Falls RCC dam is...
Design of Seepage Control Systems for RCC Dams
As the reservoirs of the first generation of roller compacted concrete (RCC) dams have been filled, several have exhibited significant amounts of seepage, a fact that has been of concern...
Behavior of Completed RCC Dams
Enough roller compacted concrete dams have been completed to allow an overall evaluation of this new approach to construction. Performance has been good. No operational restrictions have...
Comparison of Joint Shear Strengths for Conventional and Roller Compacted Concrete
Direct shear test data for parent material and bonded and unbonded jointed specimens of conventional and RCC (roller compacted concrete) are presented and compared. Results are discussed...
Roller Compacted Concrete Mix Design for Pamo Dam
Pamo Dam is designed as a 265 foot (81M) high gravity dam that will be located on the Santa Isabel Creek in San Diego County, California. RCC volume will be approximately 491,000 cubic...
Monksville Dam: Design Evolution and Construction
This paper documents the application of experience gained at other RCC projects to the Monskville Dam. The evolution of the design and its translation to construction are presented together...
Quality of Works in RCC in France: A Contractor's Solution
Bec Freres S. A. , a French dam contractor, introduced the technique of roller compacted concrete (RCC) into France. The first two French RCC dams were built as a result of a program of...
RCC in Dams in Australia
The design, construction and performance of the first three dams constructed in Australia, using RCC are described. Aspects covered in the paper include designing for zero cohesion between...
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