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A small city is evaluating disinfection requirements for their drinking water plant. With an average flow of 5 MGD and a peak flow of 9 MGD, determine the controlling CT factor (virus or giardia) when the water temperature is 23 degrees C. Typical pH during treatment is 7.75. In addition to comparing and determining controlling CT, compare sizes of clearwell(s) needed for achieving compliance WITH partial credit for turbidity removal and WITHOUT partial credit. Finally, look at the required volume of clearwell needed to comply during peak flow - assuming chlorine residual of 1.2 mg/L and average baffling in the clearwell. Assess the volume required if the baffling is superior.
The aluminum end and the copper end are maintained at temperatures of 50°C and 260°C, respectively. The thermal conductivities of aluminum and copper are 205 and 385 W/m · K, respectively. The temperature of the aluminum-copper junction in the rod..
When making hardness measurements, what will be the effect of making an indentation very close to a preexisting indentation. Why.
What is the smallest particle size (density 2.65 g/cm3) that will be removed in a horizontal grit chamber 10 m long and 1.0 m deep if the flow rate is 1000 m3/hr. Assume the temperature of the water is 25°C.
A high-strength steel simply supported W24 X 76 beam carries a uniformly distributed load over its entire length of 25 ft. (a) If the allowable stress is 33 ksi, what may be the value of the load, in addition to the beam's own weight
Compare the monolithic approach, the layered approach, and the microkernel approach in terms of degree of difficulty to debug, portability, efficiency, and degree of structure.
what does the free body analysis look like and how to calculate the loads into the horizontal and vertical members of a free standing jib hoist with a 15' boom and 5000 pound capacity
An airport runway has a capacity of 60 operations (ie landing and take-offs) per hour. In a particular hour, there are 30 landings evenly spaced over the hour.
a car travelling at 60 mph in a construction area skids into a stack of concrete barriers. skid marks leading to the
Assuming approximately 19,296 data points can be held in memory, with a 21X Datalogger (CR23X Micrologger), capturing battery voltage; panel temperature; 2 thermocouples
Given computer-generated direction field. Then sketch, by hand, an approximate solution curve that passes through each of the indicated points. Use different colored pencils for each solution curve.
A total of 500 mm of rain fell on a 75 ha watershed in a 10 hour period. Compute the average rainfall intensity and the total volume of rain that fell on the watershed.
A vehicle pulls out onto a single lane highway that has a flow rate of 280 veh/h (poisson distributed). The driver of the vehicle does not look for oncoming traffic
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