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A reinforced concrete beam having the cross section shown is on a simple span of 28ft. It carries uniform service loads of 3.60 kips/ft live load and 2.20 kips/ft dead load. Check the adequacy of the beam with respect to the moment. Use f1c= 3000 psi and fy=40,000psi.
a) Reinforcing is six No. 10 bars
b) Reinforcing is six No. 11 bars
Cross section is 20X45" 20" width 42" from top down to reinforcing bars and 3" from bottom up to reinforcing bars
A belt is wrapped around a pulley for 180 degrees. The loose-side belt tension is 100 lb and the coefficient of static friction is 0.30. Calculate the maximum belt tension if motion is impending.
Two sites, A & B, are being considered for the construction of a dam. Construction at Site A will cost $20 million and have an annual benefit of $2 million. Construction at Site B will cost $30 million and have an annual benefit of $3 million.
(a) Use differentiation to find a general expression for the rocket's velocity as a function of time, (b) When is the velocity zero?
determine the force exerted by the rider on the seat, the upward normal forces at A and B, and the lateral friction forces at A and B. Even though the bicycle is free to roll, assume that it does not. The bicycle weighs 29 lb with center of gravit..
The elevation of Y is 5265.879 ft. The elevation of X is required. Instrument at X: +S = 3.182,-S = 9.365,9.370, and 9.368. Instrument at Y: +S = 10.223; -S = 4.037,4.041, and 4.038. Find the elevation of X
Crude oil, with specific gravity SG=0.85 and viscosityμ = 2.15×10−3 lbf sec/ft2, flows steadily down a surfaceinclined θ = 30 degrees below the horizontal in a film ofthickness h=0.125 in. The velocity profile is given by u =ρg/μ(hy − y2/2)sinθ
Slider A moves in the horizontal slot with a constant speed v = 1.90 m/s for a short interval of motion. Determine the angular velocity of bar AB if the displacement xA = 90 mm, and the length L = 440 mm.
A 2,150 lb car is traveling at sea level at a constant speed. Its engine is running at 4500 rev/min and is producing 150 ft-lb of torque. It has a driveline efficiency of 90%, a driveline slippage of 2%
A plate is pulled upward from a pool of liquid with velocity, V, entering a thin liquid film on the surface of the plate. The flow is assumed to be laminar and the film thickness
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•t product of 10 (mg/L) •min for 1.5-log removal, and a target free chlorine residual of 0.6 mg/L.
Determine the forces in members DC,CB and BA of the truss. State whether the members are in tension or compression. set P=7 kN. Determine the forces in members DE and EA of the truss.
Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the A. low pressure and high temperature. B. low pressure and low temperature. C. high pressure and low temperature. D. high pressure and ..
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