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Which of the following type of tank weirs are provided with a number of vertical steps instead of horizontal or sloping downstream apron?

Which of the following type of tank weirs are provided with a number of vertical steps instead of horizontal or sloping downstream apron? Correct Answer Type D: Combination of Type A and Type C

Weirs of Type-D are called as weirs with stepped aprons as they are provided with a number of vertical steps as in case of a stepped fall instead of providing a horizontal or sloping downstream apron. Type-A and Type-D weirs are the most widely adopted.

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