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1.A clean-earth trapezoidal channel with a bottom width of 1.8 m and a side surface slope 1:1 is to drain water uniformly at a rate of 8 m^3/s to a distance ok 1 km. If the flow depth is not to exceed 1.2 m, determine the required elevation drop. Manning number: n=0.022
2.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 ?
3.The de-carburization of a steel can also be described by the error fuction. Starting with the equation, (cx-c0)/(sc-c0) = 1-erf(x/(2*(sqrt(Dt)))), and taking cs=0 derive an expression to describe the concentration profile of carbon as it diffuses out of a steel with initial concentration c0.
Determine the vertical deflection and the slope at the end of A of the bracket. Assume that the bracket is fixed supported at its base, and neglect the axial deformation of segment AB. EI is constant.
Briefly describe the measures that should be considered for the control of corrosion of embedded steel in concrete.
The entrance to Mt. Hood Meadows (elevation 3,075 ft at the point of crossing) is grade separated from Viking highway (elevation 3,050 ft at the point of crossing) and will have to be connected. The two roadways intersect at a right angle.
A mining engineer plans to do hydraulic mining with a high-speedjet of water. a lake is located H=300 m above the mine site Waterwill be delivered through L=900 m of hte fire house with an inside diameter D
What percentage removal should be expected for each of the following particle settling velocities in an ideal sedimentation tank: 0.1 mm/s, 0.2 mm/s, 1 mm/s.
The moist unit weights and degrees of saturation of a soil are given: moist unit weight (1) = 16.62 kN/m^3, degree of saturation (1) = 50%; moist unit weight (2) = 17.71 kN/m^3, degree of saturation (2) = 75%.
An earthen channel will be excavated into sandy soil for which Vmax = 4.0 ft/sec, n=0.022 and the recommended m=3. The channel will have a bottom slope of 0.0011 and accommodate a design flow of 303 cfs. Design (size) the channel section.
Stripping overburden in the Illinois coal belt, the Dusty Coal Company uses 270-horsepower, track-type tractors (with direct-drive transmissions) and drawn scrapers. The overburden is a very soft loam that weighs 2,800 lb/yd (loose). Estimated RR fac..
The James Rives flows in from the East at 320 m^3/min and joins the Jackson River flowing at 605 m^3/min just outside the town of Charlotte, NC. The concentration of BOD in the James River is 14 mg/L
Determine the heights of the fluid columns for barometers that use the following liquids at 20 C: water, ethyl alcohol, and mercury. Why do you think mercury barometers were used in the past (before the negative health effects of mercury were know..
A simply supported beam with a pin support at A and a roller support at B with length L=20 ft has a force P=10 kips applied at x=15 ft from point A. What are the reactions at A?
Matt is building a stand made out of mud bricks ( ultimatecompressive strength approximately 100 psi and density 250lbs/cubit foot) in the shape of a tent
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