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Given the initial effective stress state at a point within a soil mass (s_y=2.5 daN/cm2, s_x=1.5 daN/cm2, t_xy=t_xy=0.4 daN/cm2) and effective soil shear strength parameters at the same point (friction angle=30 degrees, cohesion=0.5 daN/cm2), find the maximum principal effective stress at failure assuming the minimum principal effective stress is kept constant at its initial value. Find also the directions of the two principal stresses at failure.
Note: Solve this problem plotting the Mohr’s circle at scale and use the Pole method.
Saturated refrigerant-134a vapor at 20 psia is compressed reversibly in an adiabatic compressor to 120 psia. Determine the work input to the compressor. What would your answer be if the refrigerant were first condensed at constant pressure before it ..
Given that us=0.24 for all surfaces, find the force P needed to start the block A to the right.
a job requires excavating and hauling 500 cyds (in situ) of sandy soil. in your posession is an excavator and a dump truck (capacity 30 cyds loose) the dump truck has a round trip travel time of 5 mins and 45 secs to the dump site and back.
A temporary diversion has been constructed on a highway of +4 percent gradient due to major repairs that are being undertaken on a bridge. The maximum speed allowed on the diversion is 10 mph
You are driving a car your metered fuel flow is 5.97x10^5 csf if at the speed you are driving you are getting 40mpg what is your speed in mph and ft/s need formulas.
assuming that the velocity variation within the main channel and the floodplain subsections is much smaller than the change in mean velocities between subsections, find the value of the kinetic energy correction coefficient.
The article "Statistical Evidence of Discrimination" (Journal of the American Statistical Association, 1982, pp.773-783) reported that, prior to 1965 in a southern state, 25% of those eligible to serve on a grand jury were black
Knowing that the tension in the spring is70 N and the speed of the collar is 3.8 m/s as it passes through point A, determine, at that instant, the radial and transverse components of acceleration of the collar.
You are designing a highway to AASHTO guidelines on a rolling terrain where the design speed will be 60 mi/h. at one section, a +1.0% grade and a -3.0% grade must be connected with an equal-tangent vertical curve.
A constant power of 1.5 hp is supplied to the motor while it operates with an efficiency of ε = 0.8. Determine the velocity of the 200-lb crate in 15 seconds, starting from rest. Neglect friction.
Let the cross - sectional area of the tube be given by A and the position of the cylinder by s , and assume that the compressed gas is an ideal gas at constant temperature so that the pressure P times the volume is a constant
A rectangular tube has an outside dimensions that are 2in wide and 4in deep and a wall thickness of 0.25in. The tube is acted on by a bending moment of 12,000lb-in. A.)Determine the maximum tensile and compressive bending stresses.
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