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Discussion

Consider the following statements about construction risk.
1. Partly built structures are more vulnerable than finished ones.
2. A shorter construction period reduces the exposure to storms.
3. Construction conditions are always the same as design conditions.

  • A.1 and 2 only
  • B.3 only
  • C.1 only
  • D.All of them

Answer: A

Correct answer: 1 and 2 only

Statements 1 and 2 are correct: a partly built mound with its core exposed and no armour placed is far more vulnerable than the completed structure, and shortening the exposure reduces the chance of meeting a damaging storm. Statement 3 is wrong - construction is checked against a separate and usually much lower return period condition, chosen for the season and duration of the works.

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