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Docks and Harbor Engineering

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

43959
43967
43898
43906

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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

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

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

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Docks and Harbor Engineering
The minimum diameter of turning besin, where ships turn by going ahead and without tug assistance should be

2.0 L
1 L
4.0 L
1.5 L

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Docks and Harbor Engineering
The significant wave height is defined is the average height of the

one – third highest waves
one – fourth highest waves
one – fifth highest waves
one – tenth highest waves

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

Mean range
Mean rise
Maximum range
Maximum rise

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