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Match each structure family with the direction in which it lies.
List I
A. Seawall
B. Groyne
C. Detached breakwater
D. Harbour breakwater
List II
1. shore parallel but separated from the shore
2. shore parallel, at the back of the beach
3. projecting seaward to enclose a water area
4. shore normal, projecting seaward from the beach

  • A.A-2, B-4, C-1, D-3
  • B.A-4, B-2, C-1, D-3
  • C.A-2, B-4, C-3, D-1
  • D.A-3, B-1, C-4, D-2

Answer: A

Orientation is the simplest way to tell the families apart on a plan. Their purposes differ accordingly, and confusing one for another leads to the wrong structure being chosen. Plan orientation is the quickest way to tell them apart.

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