# transportation engineering homework help

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• Q1: 7.5 (20.34) - 20 points: As a member of Engineers Without Borders, you are working in community that has contaminated drinking water. At t = 0, you add a disinfectants contaminated with bacteria. You make the following measurements at several times thereafter:a cistern that If the water is safe to drink when the concentration falls below 5 #/100 mL, estimate the time at which the concentration will fall below this limitSee Answer
• Q3:4. (5 points) What is the value of Highway Safety Manual?See Answer
• Q4: 3. (5 points) Use your own words to explain the under reported issue in crash data.See Answer
• Q5: Due 9 November 2020 at 12:20 PM. No late projects will be accepted. No exceptions. The figure above shows a simplified diagram of a water distribution system for a fifteen story building. Line 1 is 150 ft of 3" Sch 40 steel pipe with 7 standard 90° elbows, and a gate valve and a globe valve. Line 2 is 62 ft of 2" Sch 40 steel pipe with 5 standard 90° elbows, and two gate valves. Line 3 is 75 ft of 1" Sch 40 steel pipe with 8 standard 45° elbows, a gate valve and a globe valve. Line 4 is 57 ft of 3/4" Sch 40 steel pipe with 4 standard 90° elbows, a gate valve and a globe valve. Line 2 is 50 ft above the pump, line 3 is 100 ft above the pump, and line 4 is 150 ft above the pump. Determine the pump discharge pressure and the flow rate through each line if the pump is delivering 165 gpm. Redo the analysis assuming the pump curve is given by P = 330 – 0.008Q², in which P is given in psi and Q is given in terms of gpm. If the pump is insufficient to supply water to the storage tanks, determine the minimum specifications that would be required and recommend a specific make and model that is sold online.See Answer

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