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 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
1.2 H to 1.25 H above the high water 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.

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

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