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Completely design the cantilever retaining wall shown. The height of wall hw is 22 ft, the backfill is level, the surcharge is 600 psf, we = 100 lb/ft3, h′ = 4 ft, Ka = 0.30, and the allowable soil pressure is 4 ksf. Use a coefficient of friction of concrete on soil of 0.5, f′ c = 3000 psi, and fy = 60,000 psi. The required factor of safety against overturning is 2.0 and against sliding is 1.5. The wall batter should be between ¼ and ½ in./ft. The design is to be in accordance with the ACI Code (318-08).
a radial slider crank mechanism having a crank length of 2 inches and a coupler length of 8 inches operates at a
A 400-mm-diameter impeller of a radial-flow water pump rotates at 120rad/s and has a discharge of 0.5 m3/s. Determine the discharge for a similar pump that has an impeller diameter of 100mm and operates at 90rad/s.
a reversible heat engine receives heat from a heat source at 1000oc and has a thermal efficiency of 45. the heat engine
How does Melbourne Water play a role in addressing the growing water supply needs of a rapidly developing city such as Melbourne?
A piston/cylinder assembly in a car contains 12 in3 of air at 13 lbf/in2 and 68 F. The air is compressed in a polytropic process with exponent n = 1.25 to a final volume six times smaller. Determine the final pressure and temperature, and the heat tr..
a car with mass 3250 lbm is driven at 60 mih when the brakes are applied to quickly decrease its speed to 20 mih.
A piston-cylinder device contains 0.005 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 600 kPa. Heat is transferred at constant pressure until the temperature reaches 200°C.
steam enters an adiabatic turbine steadily at 3 mpa and 400 degree c and leaves at 50 kpa and 100 degree c. if the
A system consisting of 2 kg of water initially at 160 C, 10 bar undergoes an internally reversible, isothermal expansion during which there is an energy transfer by heat into the system of 2700 KJ. Determine the final pressure (in bar) and work (in K..
saturated water at 1 atm and velocity 2 ms flows over a cylindeical heating element of diameter 5 mm. what is the
a fenced enclosure consists of a rectangle of length l and width 2r and a semicircle of radius r as shown in figure
if f1 110n f2 121n and f3 85n determine the magnitude and coordinate direction angles of the resultant couple
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