Environmental Engineering Reference
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49. The following flows were recorded over a period of 3 months: June, 102.4
MG; July, 126.8 MG; and August, 144.4 MG. What was the average daily
flow for this 3-month period?
50. A tank is 12 ft by 12 ft. With the discharge valve closed, the influent to the
tank causes the water level to rise 8 inches in 1 minute. What is the flow to
the tank in gallons per minute?
51. An 8-in.-diameter pipe flowing full delivers 510 gpm. What is the velocity
of flow in the pipeline in feet per second?
52. Express a flow of 10 cfs in terms of gallons per minute.
53. The totalizer reading for the month of December was 134.6 MG. What was
the average daily flow for the month of September?
54. What is 5.2 MGD expressed as cubic feet per second?
55. A pump discharges into a 3-ft-diameter container. If the water level in the con-
tainer rises 20 inches in 30 seconds, what is the gpm flow into the container?
56. Convert a flow of 1,825,000 gpd to cubic feet per minute.
57. A 6-in.-diameter pipeline has water flowing at a velocity of 2.9 fps. What is
the flow rate through the pipeline in gallons per minute?
58. The velocity in a 10-in. pipeline is 2.6 fps. If the 10-in. pipeline flows into
an 8-in.-diameter pipeline, what is the velocity in the 8-in. pipeline in feet
per second?
59. Convert 2225 gpm to gpd.
60. The total flow for one day at a plant was 5,350,000 gal. What was the aver-
age flow for that day in gallons per minute?
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