In a two lane channel, bottom width of channel is given by_______________?
(A) Manoeuvring lane + 2 x Bank clearance lane
(B) 2 x Manoeuvring lane + 2 x Bank clearance lane
(C) 2 x Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane
(D) Manoeuvring lane + 2 x Bank clearance lane + ship clearance lane
The difference in height between highest high water and lowest low water is called_______________?
(A) mean range
(B) maximum range
(C) maximum rise
(D) mean rise
If H is the height of the wave expected, then the height of the breakwater is generally taken as______________________?
(A) 1.2 H to 1.25 H above the datum
(B) 1.2 H to 1.25 H above the low water level
(C) 1.2 H to 1.25 H above the high water level
(D) 1.2 H to 1.25 H above the mean sea level
The significant wave height is defined is the average height of the_________________?
(A) one – third highest waves
(B) one – fourth highest waves
(C) one – fifth highest waves
(D) one – tenth highest waves
When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called_________________?
(A) Surf
(B) Clapotis
(C) Fetch
(D) Swell
Which of the following type of sea walls results in greatest protection of shore structures?
(A) vertical sea wall
(B) sea wall with batter
(C) stepped sea wall
(D) sea wall with concave face
Which of the following are repair docks ?
(A) marine railways, dry docks, floating docks, wet docks
(B) dry docks, wet docks, floating docks, lift docks
(C) wet docks, floating docks, lift docks, marine railways
(D) wet docks, lift docks, marine railways, dry docks
A free standing brick wall 20 cm thick is subjected to a wind pressure of 75kg/m2. The maximum height of wall from stability consideration is___________________?
(A) 0.64 m
(B) 0.96 m
(C) 1.28 m
(D) 1.5 m
The thickness of each leaf of a cavity wall shall not be less than_________________?
(A) 5 cm
(B) 7.5 cm
(C) 10 cm
(D) 15 cm
The effective height of free standing nonload bearing wall and column respectively will be_________________?
(A) 1.OH and 1.OH
(B) 1.5Handl.5H
(C) 2.0Handl.5H
(D) 2.0H and 2.0H