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Water flows through a 250-mm diameter steel (C=120) pipe at a a velocity, V = 1.5 m/s. Using the Hazen-Williams equation, what is the head loss due to friction per 1000 m of pipe? What is the head loss that would occur through a 45 degree elbow?
What is the difference in the density and specific weight of air if pressure increases from 1 to 50 atmospheres if temperature is kept at 4 degrees Celsius
A 5000 m3/day wastewater treatment plant discharges to a river with a minimum drought flow of 140 m3/min (upstream of outfall) a)What total allowable BOD (kg/day) could be discharged by the plant if the BOD in the river after initial dilution must ..
Water ?ows at 6 ft/ s through a pipe 500 ft long with diameter 1 in. The inlet pressure p1= 200 psig, and the exit section is 100 ft ft higher than the inlet.
A passive dosimeter is to be designed for use in obtaining monthly average concentrations of atrazine in a stretch of river. Typical concentrations range from 10 to 50 g/L. Atrazine, a herbicide commonly found in runoff from agricultural lands.
Determine how many years from now the consumption will reach its design capacity with current usage rates if the community has a declining growth rate.
What is the percentage error in the bulk unit weight if the soil is the percentage error in the bulk unit weight if the soil is 95% saturated but assumed to be 100% saturated
The truss is to be constructed of members with equal cross-sectional areas and using a material with yield stress 700 MPa. The structure must be designed to support a mass (m) of 3400 kg with a factor of safety of 3.
The pulley at B is connected to a motor that is driving the system. The other three pulleys are consuming the power delivered by Pb . Pa = 20kW, Pb = 75kW, Pc = 30kW, and Pd = 25kW and the shaft is rotating at 120rpm.
A frictionless, incompressible steady flow field is given by V=2xyi-y^2j in arbitrary units. Let the density be ρ_0=constant and neglect gravity. Find an expression for the pressure gradient in the xdirection.
A pendulum consists of a slender rod, AB, of weight Wr= 8.60 lb and a wooden sphere of weight Ws= 21.7 lb .(Figure 1) The length of the rod is d = 7.70 ft and the radius of the sphere is R = 0.500 ft .
A horizontal curve is being designed for a new two-lane highway(12-ft lanes). The PI is at station 250 + 50, the design speed is 65 mi/h, and a maximum superelevation of 0.07 ft/ft is to be used.
In its natural state, a moist soil has a volume of 0.33 ft3 and weighs 42.55 lb. The oven-dried weigth of the soil is 35.56 lb. If Gs = 2.63, what is the void ratio of the soil
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