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ESE 2018 Civil Engineering: Action Quiz 14

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Question 1

Consider the following statements:
1) A braced cofferdam is used in shallow trench excavation as well as in deep excavation exceeding 6 m in depth.
2) Cofferdams, braced or un-braced, are temporary structures either on land or in water bodies.
3) When sheet piling is used for retaining soil, or soil and water, without any bracing, it is called a bulkhead.
Which of the above statements are correct?

Question 2

A line PQ in an old map had magnetic bearing of N 57 ° E when the local magnetic declination was 2 ° E. If the magnetic declination is now 4 ° W, what will be the magnetic bearing of the line PQ now?

Question 3

For an unconfined aquifer, the specific yield is 20%, specific retention is 15%, and coefficient of permeability is 35 m/day. Consider the following statements:
1) The porosity of the aquifer is 35%.
2) The transmissibility is 35 m2 /day.
3) The volume of water lost from storage per metre drop in the water table per 100 km2 area of the aquifer is 20 million m³.
Which of the above statements are correct?

Question 4

The concentration of chloride ions in a water sample is estimated by titration with

Question 5

In revised CBR design method recommended by the IRC for the design of flexible pavement, the total thickness depends upon

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ESE & GATE CE General

Feb 15ESE & GATE CE