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On a summer day when the wind speed in 3 m/s, a tank truck loaded with liquid chlorine is involved in an accident that results in a small split in the tank and a leak of 30 kg/min at the top of the tank. (The chlorine escaping is all in vapor form). The accident occurs on the throughway in a city at a location where there are three very large apartment buildings about 300 m downstream. The threshold limit value (TLV) for chlorine is 3 mg/m3. (Hint: in your solution, assume that in an emergency estimate, for all practical purposes, gas density differences can be neglected and the leak is at ground level).A) Would you give the order to evacuate the apartment buildings?B) How far downstream would you establish barricades to keep people away from the accident at street level?C) The fire department proposes to approach the truck from the upstream side and heavily spray the truck with water to prevent an explosion. Will this help to reduce the chlorine concentration downstream?
Field tests have shown that the Horton equation best describes the composite roughness of the channel. Find the capacity of the main channel and the lateral extent of the floodplains for a 100-year flow of 1590m^3/s.
The space truss shown is supported by a ball-and-socket joint at D and by short links at A and C. Determine the support reactions and the force in each member of the space truss.
An experiment was conducted to determine the hydraulic conductivity of an artesian aquifer. The piezometric heads at two points 150m apart were found to be 55 m and 48.5 m above a datum.
What is the maximum safe speed around the curve? If the speed limit on the roadway is 60mph, what action should be taken by the engineer?
develop a simple urban constructed wetland design guidelines and drawings. your report should include the followingi.
A waste heat source is available at 400°C. A heat engine operates using heat from this source. It rejects heat to the surroundings at 38°C. The power from the engine runs an air conditioner to keep the air inside a building at 25°C
A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively. The velocity head and pressure head at lower ends are 0.203 m and 5.407 m respectivel..
Find the water depth just upstream of a 1.5 ft high broad-crested weir in a channel 6ft wide when the flow is 18 cfs
a. What is this investment's external rate of return b. What is the decision rule for judging the attractiveness of investments based on external rate of return c. Should Aerotron Electronics buy the water filtration system
What is the concentration of MLVSS in the activated sludge (mg L-1)
A 2000-ft vertical curve connects a +3% grade to a -5% grade. If the vertical tangents intersect at sta. 52 + 60.55 and elevation 877.62 ft, calculate the elevations at the VPC, VPT, high point, and sta. 54 + 00.
A CMFR is to be designed to remove contaminant A from water with a steady-state efficiency of 95 percent. The decay reaction is zeroth order, with a rate constant of 0.1M/h. The inlet concentration of A is 0.5 M.
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