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The self cleansing velocity required for coarse sand is __________

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in Environmental Engineering by (81.4k points)
The self cleansing velocity required for coarse sand is __________

(a) 10cm/Sec

(b) 20cm/Sec

(c) 30cm/Sec

(d) 40cm/Sec

This question was addressed to me by my college professor while I was bunking the class.

I need to ask this question from Minimum and Maximum Velocity of Flow in section Hydraulic Design of Sewers of Environmental Engineering

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Right option is (b) 20cm/Sec

Explanation: The self cleansing velocity required for coarse sand is 20cm/Sec which is higher than fine sand having 15cm/Sec.

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