What is the size of the tile at an outlet of a 12 hectare drainage sy – McqOptions

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1.	What is the size of the tile at an outlet of a 12 hectare drainage system, if the D.C is 2 cm and the tile grade is 0.5%. Assume the rugosity coefficient as 0.015 for the tile drain material.
A.	10 cm
B.	20 cm
C.	15 cm
D.	25 cm
Answer» C. 15 cm

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