DAMS AND BOUYANCY

Question 1

a structure built across a stream to impound water for future purposes such as hydro power

Answer 1

DAMS

Question 2

the top of the dam. These may in some cases be used for providing a roadway or walkway over the dam.

Answer 2

CREST

Question 3

low protective walls in either side of the roadway or walkway on the crest.

Answer 3

Parapet walls

Question 4

portion of dam in contact with ground or river-bed at upstream side.

Answer 4

Heel

Question 5

potion of the dam in contact with ground or river-bed at downstream side.

Answer 5

TOE

Question 6

it is the arrangement made (kind of passage) near the top of dam for the passage of surplus/excessive water from the reservoir.

Answer 6

SPILLWAY

Question 7

the valley slopes on either side of the dam wall to which the left & right end of dam are fixed to.

Answer 7

ABUTMENTS

Question 8

level or gently sloping tunnel like passage (small room like space) at transverse or longitudinal within the dam with drain on floor for seepage water.

Answer 8

GALLERY

Question 9

opening in the dam near the base, provided to clear the silt accumulation in the reservoir.

Answer 9

SLUICE WAY

Question 10

the space between the highest level of water in the reservoir and the top of the dam.

Answer 10

FREE BOARD

Question 11

level of permanent storage below which the water will not be withdrawn.

Answer 11

DEAD STORAGE LEVEL

Question 12

tunnel constructed to divert or change the direction of water to bypass the dam construction site. The dam is built while the river flows through the diversion tunnel.

Answer 12

DIVERSION TUNNEL

Question 13

a subsidiary dam of any type constructed across a saddle or low point on the perimeter of a reservoir.

Answer 13

SADDLE DAM

Question 14

a type of small overflow dam that is often used within a river channel to create an impoundment lake for water abstraction purposes and which can also be used for flow measurement or retardation.

Answer 14

WEIR

Question 15

a small dam designed to reduce flow velocity and control soil erosion

Answer 15

CHECK DAM

Question 16

also known as flood retarding structure, designed to control flooding.

Answer 16

DRY DAM

Question 17

a structure designed to divert all or portion of the flow of river from its natural course.

Answer 17

DIVERSION DAM

Question 18

used to trap groundwater and store all or most of it below the surface for extended use in a localized area.

Answer 18

UNDERGROUND DAM

Question 19

an earth-fill embankment dam used to store by-products, which are produced during mining operations after separating the valuable fraction from the uneconomic fraction of an ore.

Answer 19

TAILING DAM

Question 20

uses steel plating (at an angle) and load-bearing beams as the structure.

Answer 20

STEEL DAM

Question 21

Uses timber. It is rarely built in modern times because of its relatively short lifespan and limited height to which they can be built.

Answer 21

TIMBER DAM

Question 22

a temporary enclosure built within, or in pairs across, a body of water and constructed to allow the enclosed area to be pumped out.

Answer 22

COFFER DAM

Question 23

created by natural geological forces (natural disasters such as earthquakes)

Answer 23

NATURAL DAM

Question 24

beavers create dams primarily out of mud and sticks to flood a particular habitable area.

Answer 24

BEAVER DAM

Question 25

Sum of all rotation towards the upstream side (counteracts)

Answer 25

RIGHTING MOMENT

Question 26

Sum of all rotation towards the downstream side

Answer 26

OVERTURNING MOMENT