- Branża: Government
- Number of terms: 10940
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The largest flood for which the safety of a dam and appurtenant structure is to be evaluated.
Industry:Energy
The junction of the downstream slope or face of a dam with the ground surface; also referred to as the downstream toe. The junction of the upstream slope with ground surface is called the heel or the upstream toe.
Industry:Energy
A sheet, thin zone, or facing made of an impervious material such as concrete, steel, wood, plastic, etc. Also see core wall.
Industry:Energy
An open channel or closed conduit conveying water from the spillway inlet downstream.
Industry:Energy
An adjustment to an earthquake time-history or response spectrum where the amplitude of acceleration, velocity, and/or displacement is increased or decreased, usually without change to the frequency content of the ground motion.
Industry:Energy
The purposes of a dam safety program are to protect life, property, and the environment by ensuring that all dams are designed, constructed, operated, and maintained as safely and as effectively as is reasonably possible. Accomplishing these purposes requires commitments to continually inspect, evaluate, and document the design, construction, operation, maintenance, rehabilitation, and emergency preparedness of each dam and the associated public. It also requires the archiving of documents on the inspections and histories of dams and the training of personnel who inspect, evaluate, operate, and maintain them. Programs must instill an awareness of dams and the hazards that they may present in the owners, the users, the public, and the local and national decision-makers. On both local and national scales, program purposes also include periodic reporting on the degree of program implementation. Key to accomplishing these purposes is to attract, train, and retain a staff proficient in the art and science of dam design.
Industry:Energy
A waterway used to divert water from its natural course. The term is generally applied to a temporary arrangement, e.g., to bypass water around a dam site during construction. “Channel” is normally used instead of “canal” when the waterway is short.
Industry:Energy
A plan of action to be taken to reduce the potential for property damage and loss of life in an area affected by a dam failure or large flood.
Industry:Energy
The vertical distance between the lowest point of the excavated foundation to the top of the dam.
Industry:Energy
A reverse curve, shaped like an elongated letter "S. ” The downstream faces of overflow spillways are often made to this shape.
Industry:Energy
