Q. In high dams, the safety against sliding should be checked only for friction.

View solution

Q. For full reservoir condition in a gravity dam, the critical combination of vertical and horizontal earthquake accelerations to be considered for checking the stability is ________________________

View solution

Q. The base width of a solid gravity dam is 35 m and the specific gravity of dam material is 2.45. What is the approximate allowable height of the dam having an elementary profile without considering the uplift?

View solution

Q. A low gravity dam of elementary profile made up of concrete of relative density 2.57 and safe allowable stress of foundation material 4.2 MPa. What is the maximum height of the dam without considering the uplift force?

View solution

Q. The vertical stress at the toe was found to be 3.44 MPa at the base of the gravity dam section. If the downstream face of the dam has a slope of 0.617 horizontal: 1 vertical, the maximum principal stress at the toe of the dam when there is no tailwater is _______________

View solution

Q. What is the recommended value of shear friction factor against sliding?

View solution

Q. The small openings made in the huge body of a concrete gravity dam such as sluices and inspection galleries can be assumed to be causing only local effects without any appreciable effect on the distribution of stresses as per the principle of_____________________

View solution

Q. A concrete gravity dam having a maximum reservoir level at 200 m and the RL of the bottom of the dam 100 m. The maximum allowable compressive stress in concrete is 3000 KN/m² and the specific gravity of concrete is 2.4. Calculate the height of the dam and check whether it is a high dam or low dam.

View solution

Q. The axis of a gravity dam is the ______________________

View solution

Q. Presence of tail-water in a gravity dam ____________________

View solution

Q. The provision of drainage gallery in a gravity dam helps in reducing ____________________

View solution

Q. Which of the following attempts are made to reduce the uplift in order to economize on the provided section of a concrete gravity dam?

i. Providing drainage gallery to collect seepage water
ii. Constructing cut-off under upstream face
iii. Pressure grouting in dam foundation
iv. Provision of shear keys or keyways

View solution

Q. Transverse joints in concrete gravity dams are the ___________________________

View solution

Q. Leakage through the transverse joints in a gravity dam is prevented by ____________

View solution

Q. In order to reduce uplift on a gravity dam, the type of grouting done is ____________________

View solution

Q. The general value of lift for concrete is taken as __________________

View solution

Q. The horizontal joints that extends through the entire width of the dam section and are developed at each lift height is called as ___________________

View solution

Q. Which of the following joints justifies the two-dimensional analysis of gravity dams?

View solution

Q. The foundation pressure used in the pressure grouting is equal to _________________

View solution

Q. Which of the following earth dam is suitable only on impervious foundation?

View solution