MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Floods

Consider the ...

Question

Consider the following statements :
The downstream imprevious flow of concrete for a barrage has ruptured. This can be due to
Which of these statements are correct?

A

1 and 2

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

1 and 4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

2, 3 and 4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

1, 2, 3 and 4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 1 and 2
The rupturing of downstream impervious floor means that uplift pressure is very high and weight of concrete or masonry floor is not able to counter balance the same. It means that the length of upstream and downstream floor is not sufficient to reduce the uplift pressure.

Suggest Corrections

thumbs-up

0

Similar questions

Q. In a barrage on pervious foundation, sheet piles are provided both upstream and downstream of the barrage to reduce uplift pressure and to prevent piping. Which one of the following statements is true in this regard?

Q. A 20 m long horizontal concrete floor under a barrage on a permeable foundation retains a 5 m head of water and has a 5 m deep downstream end pile. The exit gradient is

Q. In connection with the design of a barrage, identify the correct matching of the criteria of design with the items of design.

Item of design

(i) Width of waterway
(ii) Level and length of downstream floor
(iii) Depth of sheet piles and total length of barrage floor
(iv) Barrage floor thickness

Criteria of design

(A) Scour depth and exit gradient
(B) Lacey's formula for wetted perimeter and discharge capacity of the barrage as computed by weir equations
(C) Uplift pressure variation
(D) Hydraulic jump considerations.

Q. A flownet for an earth dam on impervious foundation consists of 4 flow channels and 15 equipotential drops. The full reservoir level is 15 m above the downstream horizontal filter. Given that horizontal permeability is

9 \times 10^{- 6}

m/s and vertical permeability is

1 \times 10^{- 6}

m/s, the quantity of seepage through the dam will be

Q. Cork cells are impervious due to deposit of

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Summary

GEOGRAPHY

Watch in App

explore_more_icon

Explore more

Standard IX Geography

Join BYJU'S Learning Program

CrossIcon