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1.A flocculation/sedimentation combination basin in a conventional drinking water treatment plant is to be constructed of cast-in-place reinforced concrete. The horizontal flow rectangular basin will be located in New Jersey, USA. The client must decide whether or not to pay to have the basins covered with a concrete slab or,alternatively, left open. Discuss all the factors that the client should consider when deciding whether or not to cover the floc/sed basin. Discuss all the advantages, disadvantages and considerations that the client should think about. Be clear and complete so the client understands what the choices are and any ramifications of the decision.
2.If the sedimentation basin in problem 1 (ignore the floc basin for this problem) receives a flow of 1400 gallons per minute, and has a depth of 10 feet, what are the length and width dimensions if the basin is designed to remove particles that have a settling velocity greater than 30 feet per day? The basin will have a length to width ratio of 4 to 1. What are the flow through velocity and hydraulic retention time for this basin?
A steel ring of internal radius 499.8 mm is to be shrink-fitat normal (room) temperature over a rigid cylinder of radium r =500 mm
A belt is wrapped around a pulley for 180 degrees. The loose-side belt tension is 100 lb and the coefficient of static friction is 0.30. Calculate the maximum belt tension if motion is impending. Assume A) a flat belt and B) a V-belt with a groobe an..
Sub 12 means from stage one to two. Heat transfer (Qsub12) occurs to a fluid of mass m whose volume increases at a constant pressure of 21 bar. Assume that the fluid is air (Csubv=0.718 kJ/kg *K and R=0.287 kJ/kg*K) and that Tsub1=725K and Tsub2=1100..
At a confining pressure of 2000 psi, the first sample failed at 9000 psi. Then at a confining pressure of 5000 psi, the other sample failed at 21000 psi. (a) plot the 2 test results on a shear stress-nomal stress diagram and draw in the Mohr envel..
for the retaining wall shown below determine the followinga whether the wall has adequate sliding resistance b whether
After the cone of depression has achieved equilibrium, the piezometric heads at two observation wells 40 and 95 m from the pumping well are measured as 78.9 and 83.4 above sea level, respectively.
determine the required spacing of shear reinforcement over the span of a 28-in-wide and 18-in-deep beam with a clear span equal to 30 ft. 2 in. the beam suports a total factored uniformly distributed load of 5.0 kips/ft.
A fluid that occupies a volume of 32 L weighs 280 N at a location where the gravitational acceleration is 9.8 m/s2. Determine the mass of this fluid and its density.
A 1:2000 scale tidal model is operated to satisfy Froude’s law. A velocity of 0.02 ft/s is observed in the model. What is the velocity at the corresponding point in the prototype? What length of time in the model corresponds to one day in the prototy..
A pipe carries 4750 LPM of crude oil at an average velocity of 2.5m/s. Estimate the inside diameter, wall thicknes and outside diameter of the pipe
Peg P is driven by the fork link OA along the curved path described by r = (2*theta) ft. At the instant theta = pi / 4, the angular velocity and angular acceleration of the link are (theta-1dot) = 3.0 rad/sec and (theta-2dot) = 1.1 rad/sec^2
What is the probability that in case of an earthquake the city will lose its water supply?
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