If D is the depth of scour below original bed, then the width of launching apron is generally taken as
A)1.2 D
B)1.5 D
C)2.0 D
D)2.5 D

Name: If D is the depth of scour below original bed, then the width of launching apron is generally taken as A)1.2 D B)1.5 D C)2.0 D D)2.5 D
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Quizplus · Accepted Answer

The width of the launching apron is generally taken as 1.5 times the depth of scour below the original bed to ensure adequate protection against scouring around structures like bridges.

If D Is the Depth of Scour Below Original Bed