Lopez-Angostura Power Tunnel
The Lopez-Angostura Project is located on the Yaque del Norte River in the Dominican Republic near the City of Santiago. A 24 m high dam, a 3.6 km long power tunnel, a pit powerhouse with...
Design of Steel Tunnel Liners
The paper presents a detailed development of the fundamental equations for internal pressure design, considering an elastic interaction between the steel liner and the surrounding rock...
Analysis and Rehabilitation of Ambursen Dams
This paper deals with the investigation and analysis of two Ambursen dams located in the upper Midwest. These investigations revealed that the original design contained significant defects,...
New Clues to PMP
Great changes have occurred in meterology in the last two decades. Formerly, weather data were available for forecasting and climatological analyses only at points - at weather stations....
Clay Joints in the Foundation of Dkhila Dam
The stability analysis performed at the beginning of construction, taking into account the shear test results of the foundation claystone showed insufficient safety factors against sliding....
Instream Flow and Energy Production Studies for Hydro Relicensing
A methodology for assessing the effects of alternative flow release scenarios on both aquatic habitat and on energy production was utilized during instream flow studies at a 72-MW hydroelectric...
Vibration Problems of Penstock Piping for a Vertical Tubular Hydraulic Turbine
Excessive vibration amplitudes were experienced in the vertical gated tubular units at the Great Falls Hydroelectric Project located in the City of Paterson, New Jersey. Vibration amplitude...
Update: Ozark-Webbers Falls Turbines
The Ozark and Webbers Falls powerhouses were designed and constructed under the supervision of the U.S. Army Corps of Engineers. Both are located on the McClellan-Kerr Arkansas River Navigation...
Analyses of the Lower San Fernando Dam Failure
The main methods employed for the back analysis of the behaviour of the Lower San Fernando Dam during the 1971 earthquake are described. The requirements for a comprehensive analysis are...
Analysis of Concrete Gravity Dams Using Microcomputers
Monenco Consultants Limited has developed a microcomputer program entitled 'DS2' for the stability analysis of concrete gravity dams. This paper discusses this...
Knowledge-Based Expert System for the Real-Time Operation of Reservoir Systems
An efficient way to avoid the loss of valuable knowledge is to develop an expert system which incorporates hydrologic, hydraulic, system analysis, environmental, economical knowledge based...
Evaluating Uplift Pressures for Concrete Gravity Dams
An approach for evaluating uplift and dam foundation conditions, which resulted from the initial phases of an Electric Power Research Institute (EPRI) study is presented. An earlier study...
Experience with the Application of Fully 3D Potential Flow Analysis to Runner Design
Hydraulic turbines come in various shapes and types depending on their operating conditions. Their performance characteristics depend largely on the runner which is the most difficult...
Foundation Engineering
Current Principles and Practices
The proceedings of the 1989 ASCE Foundation Engineering Congress (entitled Foundation Engineering: Current Principles and Practices) address advances in the state-of-practice and in research...
Bioremediation: Testing the Waters
Piotrowski describes the pilot study that led to the first EPA-mandated use of bioremediation to clean up a Superfund aquifer. (Bioremediation seeks to stimulate microbial activity to...
SPIDA Method for Reinforced Concrete Pipe Design
The required supporting strength of buried pipe is affected by the total load that is imposed upon the pipe and the manner in which the pipe is supported by the surrounding soil. The installation...
Guidelines for Failure Investigation
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Segmental Tunnel Lining Meets `Buy American'
Segmental concrete tunnel lining is the other innovation proven during construction of the Washington Metropolitan Area Transit Authority (`wmata'). Although `wmata's'...
Cautious Risk Taking
Traditionally, the design engineer could bear virtually unlimited liability for design failure. Now he is less vulnerable. The concept is less than 20 years old, but since the early 70s,...
Grouting Trends
The grouting industry is discussed and North American practice compared to European practice. There has been more innovation in this field overseas, but there have also been failures....
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