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Docks and Harbor Engineering

Docks and Harbor Engineering
The difference in height between highest high water and lowest low water is called

Maximum rise
Mean range
Mean rise
Maximum range

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

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

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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

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

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Docks and Harbor Engineering
When a ship floats at its designed water line, the vertical distance from water line to the bottom of the ship is known as

Depth
Free-board
Draft
Beam

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Docks and Harbor Engineering
For designing the dock, the proportion of ship load assumed to be borne by keel blocks is

43898
43967
43906
43959

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