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water from a waste water treatment plant is released into a receiving pond that has a volume of 5 ac-ft. one of the reasons for doing this is to assure that the chlorine residual is below 0.1mg/L before the water is released to a stream as required by the regulations. the flow rate of the WWTP is 3 MGD and the regulation is always complied with. The plant wants to replace the pond with a canal and asks you to design this. What are the dimensions?
Calculate the ozone column amount in DU, corresponding to the pressure profile and ozone concentrations given above. Recall Avogadro's number, NA = 6.0 × 1023 molecules per mole, from which one can calculate [O3]= ..
what is the reason for the relatively high strength of wood in the longitudinal direction of the tree trunk as compared to the transverse direction
Lane widths are 12ft and the superelevation is .006 and was set assuming maximum fs. If the necessary sight distance required 52ft of lateral clearance from the roadway center line, what design speed was used for the curve
An existing high-way railway at-grade crossing is being redesigned as a grade seperated to improve traffic operations. the railway must remain at the same elevation. the highway is being reconstructed to travel under the railway.
Additional cost at the end of year 1 = $50,000. Benefit at the end of year 1 = $0. Annual benefits at the end of Years 2-10 = $20,000. Interest Rate = 7%. Conventionally B/C ratio and wheter the project is economically stable.
Assume that bonding atoms touch one another, that the angle between adjacent bonds is 109.5, and that each atom internal to the unit cell is positioned a/4 of the distance away from the two nearest cell faces.
A direct shear test is performed on a saturated specimen of loose sand. A normal stress equal to 100 kPa is applied and a maximum shear stress of 75 kPa is measured in the shear test. Determine the principal stresses and the orientation of these p..
The rotor of an electric generator is rotating at 200 when the motor is turned off. Due to frictional effects, the angular acceleration of the rotor after the motor is turned off is α=-0.01ω rad/s^2
The plate is submerged in a liquid is a vertical position with the parallel sides horizontal and the shorter parallel side at the top and exactly in the surface of the liquid. The static moment of the plate with respect to the surface of the liqui..
Geometric design and construction of a new two-lane two-way road has been recently completed and now it is time for design pavement near Ballarat, Victoria.
A company produces two kinds of septic tanks: type A and type B. Each type B tank takes twice as long to produce as a type A tank. If it only produced type A tanks, the company has the time to produce a maximum of 2000 tanks per week.
Determine the thickness of the viscous sublayer in a smooth 20 cm diameter pipe, if the Reynolds number is 25000.
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