EXAMIANS
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called
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If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r<sup><sup>2</sup>/<sub>3</sub></sup> s<sup><sup>1</sup>/<sub>2</sub></sup> evolved by
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For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is
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The rate of accumulation of sludge per person per year, is
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The most efficient cross section of sewers in a separate sewerage system is
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If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is
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The sewer pipes
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In sewage, the solids in mg per litre is
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If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is
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Facultative bacteria survive in
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