For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is

For a grit chamber, if the recommended velocity of flow is 0.2 m/sec

1.	For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is
A.	16 m
B.	20 m
C.	24 m
D.	30 m
Answer» D. 30 m