Consider the following statements related to uplift pressure in gravity dams:1. A drainage gallery reduces the uplift pressure at all levels below the gallery.2. A drainage gallery below upstream water level reduces the uplift pressure at all levels below the upstream water level.3. A grout curtain near the heel reduces seepage and uplift pressure everywhere on the gravity dam whatever the upstream water level.Which of the above statements are correct?

Consider the following statements related to uplift pressure in gravit

1.	Consider the following statements related to uplift pressure in gravity dams:1. A drainage gallery reduces the uplift pressure at all levels below the gallery.2. A drainage gallery below upstream water level reduces the uplift pressure at all levels below the upstream water level.3. A grout curtain near the heel reduces seepage and uplift pressure everywhere on the gravity dam whatever the upstream water level.Which of the above statements are correct?
A.	2 and 3 only
B.	1 and 2 only
C.	1 and 3 only
D.	1, 2 and 3
Answer» B. 1 and 2 only

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