Multiple choice

Assertion (a): At a manhole, the crown of the outgoing sewer should not be higher then the crown of the incoming sewer. Reason (r) Transition from a larger diameter incoming sewer to a smaller diameter outgoing sewer at a manhole should be made The CORRECT option evaluating the above statements is

  1. Both I and II are TRUE

  2. I is FALSE and II is TRUE

  3. Both I and II are FALSE

  4. I is TRUE and II is FALSE
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Assertion (a) is true to prevent backwater effects. Reason (r) is false because transitions should be designed to minimize turbulence and energy loss, not specifically because of diameter changes.

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