The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced level

Water Supply Engineering
The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced level

1500 m

1505 m

1485 m

1475 m

1500 m

1505 m

1485 m

1475 m

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Water Supply Engineering
Time of concentration

duration of rainfall.

is the time taken, for precipitation

time taken for the storm water to travel from the most remote point to the drain.

time taken for all the ran off to reach the drain

duration of rainfall.

is the time taken, for precipitation

time taken for the storm water to travel from the most remote point to the drain.

time taken for all the ran off to reach the drain

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Water Supply Engineering
For determining the velocity of flow of underground water, the most commonly used non-empirical formula is

Hazen’s formula

Lacy’s formula

Slichter’s formula

Darcy’s formula

Hazen’s formula

Lacy’s formula

Slichter’s formula

Darcy’s formula

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Water Supply Engineering
Surge tanks are used

for storage water

to increase the velocity in a pipeline

to guard against water hammer

as overflow valves

for storage water

to increase the velocity in a pipeline

to guard against water hammer

as overflow valves

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Water Supply Engineering
The process of passing water through beds of granular materials, is called

Screening

Filtration

Sedimentation

None of these

Screening

Filtration

Sedimentation

None of these

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Water Supply Engineering
Aeration of water is done to remove

hardness

odour

bacterias

colour

hardness

odour

bacterias

colour

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Water Supply Engineering

Water Supply Engineering The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced level

Water Supply Engineering Time of concentration

Water Supply Engineering For determining the velocity of flow of underground water, the most commonly used non-empirical formula is

Water Supply Engineering Surge tanks are used

Water Supply Engineering The process of passing water through beds of granular materials, is called

Water Supply Engineering Aeration of water is done to remove

Water Supply Engineering
The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced level

Water Supply Engineering
Time of concentration

Water Supply Engineering
For determining the velocity of flow of underground water, the most commonly used non-empirical formula is

Water Supply Engineering
Surge tanks are used

Water Supply Engineering
The process of passing water through beds of granular materials, is called

Water Supply Engineering
Aeration of water is done to remove