Docks and Harbor Engineering
If H is the height of the wave expected, then the height of the breakwater is generally taken as

1.2 H to 1.25 H above the high water level
1.2 H to 1.25 H above the low water level
1.2 H to 1.25 H above the datum
1.2 H to 1.25 H above the mean sea level

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Docks and Harbor Engineering
Assertion A : Large size stones are required in stone revetment in shore protection.Reason R : Resistance of stone to wave force is proportional to its volume and wave force is proportional to the exposed area of the stone.Select your answer based on the coding system given below.

Both A and R are true but R is not a correct explanation of
Both A and R are true and R is the correct explanation of
A is true but R is false.
A is false but R is true.

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Docks and Harbor Engineering
Assertion A : Basin walls have to be of much grater height than dock walls.Reason R : Tidal basins are subject to fluctuations of levels due to tidal variations.Select your answer based on the coding system given below:

Both A and R are true but R is not correct explanation of A.
A is true but R is false.
Both A and R are true and R is the correct explanation of A.
A is false but R is true.

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