environmental to engineering
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Problem #1: Using 5400 LPCD, estimate the municipal water demands (in m3/d) for a city of 225,000 persons.
Problem #2: A five story building of ordinary construction 7700 ft2 (715m2) of ground area communicating with a three-story building of ordinary construction of 9500 ft2 (880m2) ground area. Compute the required fire flow.
Problem#3: Estimate the total daily water withdrawal in m3/d) including both fresh and saline water for all uses for the U.S. in 2000. The population was 281,421,906 and 5400 LPCD.
Problem#4: If a faucet is dripping at a rate of one drop per second and each drop contains 0.150 milliliters, calculate how much water (in liters) will be lost in one year?
Problem#5: Savabuck University has installed standard pressure operated flush valves on their water closets. When flushing, these valves deliver 130L/min. If the delivered water costs $0.45/m3 water, what is the monthly cost of not repairing a broken valve that flushes continuously?
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