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GATE Civil Engineering (CE) 2018 Shift 1 Solved Paper

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Question : 38

Total: 65

A rapid sand filter comprising a number of filter beds is required to produce 99MLD of potable water. Consider water loss during backwashing as 5%, rate of filtration as 6.0 m∕h and length to width ratio of filter bed as 1.35. The width of each filter bed is to be kept equal to 5.2m. One additional filter bed is to be provided to take care of break-down repair and maintenance. The total number of filter required will be

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