Question

The appropriate value of estimated average life (in years) of a dam reservoir is
1. 25
2. 50
3. 75
4. 100
5. 150

Answer 1

Correct Answer - Option 3 : 75

Explanation:

A dam is a hydraulic structure constructed across a river in order to store water on its upstream side or divert water from the river.

• The service life of a well-designed, well-constructed, and well-maintained and monitored embankment and concrete dams can easily reach 100 years.
• But the appropriate value of the estimated average life (in years) of a dam reservoir is taken as 75 years.
• The life-span of penstocks is 40 to 60 years
• The service life of hydromechanical elements such as gates and their motors have to be replaced after 30 to 50 years.
• The service life of electro-mechanical equipment varies from 20 to 60 years