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Two triaxial tests were performed on two prepared samples of the same limestone. At a confining pressure of 2000 psi, the first sample failed at 9000 psi. Then at a confining pressure of 5000 psi, the other sample failed at 21,000 psi. Plot the two test results on a shear stress-normal stress diagram and draw in Mohr envelope.
The pulley at B is connected to a motor that is driving the system. The other three pulleys are consuming the power delivered by Pb . Pa = 20kW, Pb = 75kW, Pc = 30kW, and Pd = 25kW and the shaft is rotating at 120rpm.
The probability that a new car battery functions for over 10,000 miles is .8, the probability that it functions for over 20,000 miles is .4, and the probability that it functions over 30,000 miles is .1. If a new battery is still working after 10,..
A water pipe, in diameter id located in a trench 450mm below the center of the slab. The trench running along the length of the slab,300mm wide and 450mm deep, was backfilled with the same soil. If this pipe were to leak, what effect would it have..
The design of a masonry wall to support vertical compression loading is influenced by the same factors that affect the design of all compression elements. One of these factors is the extent of rotational restraint at the top of the wall.
Maximum dry unit weight was found to be 114lb/ft^3 at a water content of 13.5% in labratory tests. Results of a field unit weight test were dry unit weight=111lb/ft^3 and a water content 11%.
a prismatic bar AB of length L, cross section A, modulus of elasticity E, and weight W hangs vertical under its own weight. if the bar is a riser pipe hanging from a drill rig at sea, what is the total elongation of the pipe
The total length of the hose is 65 m with 200-mm diameter. The exit diameter of the nozzle is 100 mm. Take e/D for the hose as 0.0001. What power is needed from the pump on the water
A wire is kept at ambient temperature while it is stretched by 200 mm by a force which rises from zero to 1.5 kN, the extension of the wire being directly proportional to the force applied. What is the work done by the wire
A time interval of 1.5 hours is recorded for a 6 inch drop of water level in a percolation (perc) test hole. What is the perc rate. How many laterals would be required in the leaching field to serve a 5 bedroom house,
Indoor Air quality is greatly affected by Radon, which can cause lung cancer. When we moved to Colorado, we tested the house for Radon and installed a radon mitigation system.
A 3000 lb vehicle has a drag coefficient of 0.32 and a frontal area of 30 ft2. What is the minimum tractive effort required for this vehicle to maintain a 65 mph speed on a 2% upgrade through an air density of 0.002045 slugs/ft3
The mean score of students on an aptitude test is 72 points with a standard deviation of 8 points. What is the probability that two groups of students, consisting of 28 and 36 students respectively,
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