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1.A rigid beam (AB), 12 feet in length, with a point load of 9 kips (4 feet from A) is resting on two short steel rods (AC & BD). Diameter of Rod AC is 1 inch, Rod BD diameter is 2 inches. Assuming no buckling in rods, Determine the displacement of the beam at each end.
2.Find the length and width of a square basin for virus disinfection of a flow of 6 MGD. You may assume a depth of 5 ft, a C(dot)t product of 10 (mg/L) (dot)min for 1.5-log removal, and a target free chlorine residual of 0.6 mg/L.
An earth retaining structure is 12 feet high. The soil behind the earth retaining structure is a sand having a moist unit weight equal to 125 pcf, a saturated unit weight equal to 130 pcf, and a friction angle equal to 32 degrees.
Determine the effective size as well as the uniformity coefficient and coefficient of curvature for each soil. Determine also the percentages of gravel, sand, silt, and clay according to (a) ASTM, (b) AASHTO, (c)USCS, and (d) the British Standard.
When a channel of triangular cross section was new, a flowrate of Q caused the water to reach L = 2 m up the side of the channel. After considerable use, the walls of the channel became rougher and the Manning coefficient, n, doubled.
Determine the drag force FD on a golf ball assuming it is a smooth sphere. (Assume the air is at 60 F and standard pressure.) Now determine the drag force on an actual golf ball assuming CD = 0.25. How do the two forces compare
The flow in the river is 30ft^3/min and the first-order rate constant for disinfection is 6min^-1. 1)What kind of hydrodynamic model should you use. 2) write the mass balance equation for microorganisms in symbols at steady state. define symbols.
How much extra water does a 175 - lb concrete canoe displacecompared to an ultra-lightweight 38 - lb Kevlar canoe of the samesize carrying the same load?
A proposed combined cycle power plant is shown below. A gas turbine engine, the topping cycle, takes air at state 1 (T=300 K, P=100 kPa) and compress it irreversibly (hc=0.87) to state 2.
There are no interchanges in the vicinity of this freeway segment. If the peak-hour factor is .90 and all of the drivers are regular users, what is the level of the service of this compound-grade freeway segment?
You have been asked to estimate the optimal size of a small reservoir that is being constructed near Atlanta. Knowing that water is a scarce commodity, you have decided to adopt an "economists" perspective on this problem
What ground distance will be measured if grid distance is 2158m and Orthometric height = 850m, Scale factor Sf = 0.9999943, Geoidal separation N = 27m, Ra = 6371km
average flow rate = .0022 m^3 /s (190 m^3 /d) Influent Substrate concentration = 250 mg/L as COD (all essentially soluble) Mean cell residence time is to be 5 days Volume of mix tank = 25 m^3 the reactors kenetic constants are
Determine the vertical deflection in inches at the midpoint, called point F, between points B and C. Use E=29,000 Ksi, I=800 inches^4, and A=6.0 inches^2 for all members. Use the Virtual Work Method.
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