1) constructing cutoff under upstream face
2) constructing drainage channels bet-ween the dam and its foundation
3) by pressure grouting in foundation
The corret answer is?
A. only (1)
B. both (1) and (2)
C. both (1) and (3)
D. (1), (2) and (3)
Related Mcqs:
- The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?
A. hydrostatic pressure at toe
B. average of hydrostatic pressure at toe and heel
C. two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel
D. none of the above - Seepage through foundation in an earthen dam is controlled by providing___________________?
A. rock toe
B. horizontal blanket
C. impervious cut off
D. chimney drain - Seepage through embankments in an earthen dam is controlled by_______________?
A. drainage filters
B. relief wells
C. drain trenches
D. provision of downstream berms - When the upstream face of a gravity dam is vertical, then the intensity of water pressure at the water surface and at the base respectively will be_______________?
A. 0 and wH212
B. wH2/2and wH2/3
C. wH and 0
D. OandwIIwhere w is unit weight of water and H is the depth of water
- The meander pattern of a river is developed by_________________?
A. average discharge
B. dominant discharge
C. maximum discharge
D. critical discharge - The relation between probability (P) and recurrence interval (T) is given by_________________?
A. PT = 1
B. PT2 = 1
C. P/T = 1
D. P/T2 = 1 - When the reservoir is full, the maximum compressive force in a gravity dam is produced______________?
A. at the toe
B. at the heel
C. within the middle third of base
D. at centre of base - The most suitable material for the central impervious core of a zoned embankment type dam is_______________?
A. clay
B. coarse sand
C. silty clay
D. clay mixed with fine sand - For the upstream face of an earthen dam, the most adverse condition for stability of slope is_______________?
A. sudden drawdown
B. steady seepage
C. during construction
D. sloughing of slope - The major resisting force in a gravity dam is___________________?
A. water pressure
B. wave pressure
C. self-weight of dam
D. uplift pressure
