GATE CE · 2019 · CE
Question 41: Water and Waste Water Quality and Treatment
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Question 41
CENAT2 marksNeeds review
A 0.80 m deep bed of sand filter (length 4 m and width 3 m) is made of uniform particles (diameter = 0.40 mm, specific gravity = 2.65, shape factor = 0.85) with bed porosity of 0.4. The bed has to be backwashed at a flow rate of 3.60 m³/min. During backwashing, if the terminal settling velocity of sand particles is 0.05 m/s, the expanded bed depth (in m, round off to 2 decimal places) is ________.
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2019CE
GATE CE 2019 · Paper 1
Civil Engineering · Original paper archive
- Section
- Civil Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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