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Select different construction materials found in the built environment at your choice except concretes and timber.
Calculate the resistance coefficient K for a ball-type check valve placed in a 2-in schedule 40 steel pipe carrying 650 gal/min of oil (sg = 0.90)
A solid shaft with a diameter of .75 in. The subject is torqued at B(35lb*ft clockwise), C(20lb*ft counterclockwise), D(40 lb*ft counter clockwise) and E(25 lb*ft clockwise).
air flows through a horizontal iron tube (e=0.15m) at Q=5.7x10-2 m3/s. find the pipe diameter if the pressure drop is 3.5kPa per 30.5m of pipe. air density = 1.23kh/m3 dynamic vicosity = 1.79 x 10-5 N.s/m2)
derive an equation for the velocity profile within the film in terms of radial distance r, measured from the cylinderaxis, the film thickness, δ, and the appropriate physicalpropertiesof the liquid. State clearly all assumptions made
Develop an estimate of the volumetric flow rate of air that will be required for aeration of the mixed liquor in an activated sludge system.For this calculation, assume that the (ultimate) CBOD is 200 mg/L and (ultimate) NBOD is 50 mg/L.
The molecular diffusion coefficient of taxol in fluid blood is Dab=1.0*10^-6 cm2/s. A) what is the convective mass transfer coefficient, kc around the outer surface of the cylindrical portion of the stent, for the solute Taxol?. B) what is the minimu..
A 2-inch diameter glass pipe is connected to a pipe network in which the pressure is 70 psig. If the length is 300 feet and the outlet is 10 feet above the pipe, determine the flow rate.
Consider a lake whose fish population is governed by the equation: dP/dt= 0.1P[(P/10)-1] if the initial fish population is 3,000 and assuming no fishing is allowed in the lake, what is the fish population after 10 days?
Select the lightest available W14 section for column tosupport the axial compression loads Pd=150k and Pl=200 k if KL =14ft and A572 grade 50 steel is used. Column is assumed to be inframe that is braced against side-sway
You are to design a chlorination tank for killing microorganisms in the effluent from a wastewater treatment plant. It is necessary to remove 99% of active bacteria in a wastewater flow of 120 m 3 /hr.
A hypothetical water treatment train consisting of coagulation/flocculation unit, filtration unit and chlorination system is used to treat surface water characterized by bacterial concentration of 800,000 CFU/L.
A rod of copper alloy 50 inches long has a modulus of elasticity of 16*10^7 psi. If the maximum allowable elongation is 0.05 in, determine the diameter of the rod if it has to be subjected to a load of 3200 lb.
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