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Gasoline is being discharged from a pipe at point 2 at elevation 66.66 m. Pint 1, located 965.5 m along the pipe from point 2, is at elevation 82.65 m, and the pressure there is 2.50 kPa. If the pipe roughness is 0.500 mm, what pipe diameter is needed to discharge gasoline ( γ= 7.05 kN/m3, μ = 2.92x10-4Ns/m2, ρ = 719 kg/m3) at a rate of 0.10 m3/s? Solve this problem using two different approaches.
1) Use Moody chart and manual iteration
2) Use Colebrook equation and any kind of software tool such as Mathcad, excel or a programmable calculator.
Water at 20 degrees flows at a velocity of (V =) 2 m/s in a (D =) 250-mm diameter horizontal ductile iron pipe. Estimate the friction factor f in the pipe, and state whether the pipe is hydraulically smooth or rough.
A 500 L (132 gal) tank contains 255 mg/L 2,4,6-trichlorophenol dissolved in trichloroethylene (TCE). What is the 2,4,6-trichlorophenol concentration in ppm Assume the temperature of the system is 20 degrees C.
An industry is illegally dischargingbenzeneinto a river. The concentration in the river atthe point of discharge is 0.2mg/L. A drinking water treatment plant (DWTP) is located 1.5km downstream. The watervelocity in the riveris 0.35km/day.
Due to temperature change, a 1/32" hole mismatching occurred. What is the pulling force, in lbs, to be applied for one of the plates to match the two holes The plate length is 3 ft (from the left end to the hole) and its cross section is 1/8" x 1"..
A 100% saturated soil has a wet unit weight of 112.8 lb/ft^3, and its water content is 42%. Find the void ratio and specific gravity of solids.
Block A, 5lb, strikes block B, 10lb. Block A is moving with the intial velocity, Va, and block B is at rest. After striking block B, block A travels 2 in. to the right and block B travels 3 in. to the right.
For an elevated storage tank , if the minimum allowable pressure = 300 kPa, Height of pipe system at low-pressure service location = 6 m, and head loss from tank to service location: average daily conditions = 11 m
A soil borrow material in its natural state in the ground has a unit weight of 85 pfc. When a sample of this soil is dried in the laboratory, its dry unit weight is 72 pfc.
A rectangular channel 5 m wide carries a discharge of 10 m^3/s at a uniform depth of 3 m. The channel is running on a slope of 0.0025 m/m. Estimate wall shear stress and friction velocity. Assume the density of flowing water as 1000 kg/m^3.
During the following day the sun melts the ice cover. Determine the new depth if the flow rate remains the same and the surface roughness of the ice is essentially the same as that for the bottom and sides of the river.
If the heading of a member function of a class ends with the word const, then the function members cannot modify the private member variables, but can modify the public member variables.
1. A block of moist soil weighs 12.72 lbs, is 0.1050 ft3 in volume, has a water content of 9.5%, and has a specific gravity of soil solids of 2.7. Assess: Va, Vw, Vs, S, e, gama d. 2. The moist unit weight of a soil is 18.7 kN/m3 Given that Gs=2.71..
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