Which of the following plot is useful in determining the clearance fo – McqOptions

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1.	Which of the following plot is useful in determining the clearance for the spillway deck bridge and the top levels of walls on the side of the spillway?
A.	The coordinates of the lower nappe
B.	The coordinates of the upper nappe
C.	Both the coordinates of upper and lower nappe
D.	The origin or apex of crest
Answer» C. Both the coordinates of upper and lower nappe

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