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Assertion (A): The good engineering practice height rule takes the lesser of building height and width.

Reason (R): The wake cavity scales with the smaller dimension of the obstacle.

Select the correct answer from the options below.

  • A.Both A and R are true, but R is not the correct explanation of A
  • B.A is true but R is false
  • C.A is false but R is true
  • D.Both A and R are true, and R is the correct explanation of A

Answer: D

Correct answer: Both A and R are true, and R is the correct explanation of A

The wake cavity is governed by the smaller of the building’s dimensions, so taking the lesser of height and width matches the rule to the aerodynamics it is meant to describe.

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