## 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

Maximum rise
Mean range
Maximum range
Mean rise

0.34 VF
3.4 VF
1.5 VF
0.5 VF

## Docks and Harbor Engineering Which of the following conditions of loading imposes the greatest load on the foundation in case of dry docks?

When the dock is dry and is under construction
When the dock is full of water
When the dock is empty with the ship of maximum tonnage
When the dock is empty

## 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.

## Docks and Harbor Engineering By increasing the rise of lock-gates, (i) The length of the lock gate will increase (ii) Transverse stress due to water pressure on the gate will increase (iii) Compressive force on the gate will increase

Only (iii) is correct
Only (ii) is correct
(i) and (ii) are correct
(i) and (iii) are correct