Docks and Harbor Engineering
As compared to wall type breakwater, mound type breakwater

Requires skilled labor
Results in less damage due to gradual failure
Requires low maintenance cost
Requires less material

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Docks and Harbor Engineering
Assertion A : Depth and width required at the entrance to a harbour are more than those required in the channel.Reason R : The entrance to a harbour is usually more exposed to waves as compared to the harbour itself.Select your answer based on the coding system given below:

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

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