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A cylindrical sample of soil is isotropically compressed under drained condition with a vertical stress of 100 kPa and a radial stress of 100 kPa. Subsequently, the axial stress was held constant and the radial stress was increased to 300 kPa under an un-drained condition.
(a) Create a graph with the x-axis as s, s' and the y-axis as t. Calculate and plot the initial mean effective stress and deviatoric stress
(b) Calculate the increase in mean total stress and deviatoric stress.
(c) Plot the total and effective stress paths (assume the soil is a linear, isotropic, elastic material).
(d) Determine the slopes of the total and effective stress paths and the maximum excess pore water pressure
A man having the mass of 77 kg sits in the chair which is pin-connected to the frame BC. If the man is always seated in an upright position, determine the magitudes of the horizontal and vertical reactions of the chair
Discuss how relative motion is a critical issue in the midair refueling of aircraft. Would control of this process be with the pilot of the tanker or the aircraft being refueled
Section AB of a pipeline lies in th eyz plane and forms an angle of 37 degrees with the z axis. Branch lines CD and EF join AB as shown. Determine the angle formed by the pipes.
A small city is evaluating disinfection requirements for their drinking water plant. With an average flow of 5 MGD and a peak flow of 9 MGD, determine the controlling CT factor (virus or giardia
The chief engineer of an airport is planning to rehabilitate runway pavements over the next several months. You ask him what impact this would have on delays and queues, but he does not know
Determine the number of gallons of paint needed to paint the outside surface of the water-supply tank, which consists of a hemispherical bottom, cylindrical sides, and a conical top. Each gallon of paint can cover 250 ft^2
A well mixed sewage lagoon is to be constructed to process 100000 gallons per day of raw sewage. The pollutant concentration in the raw seweage to be discharged into the lagoon is 200ppm. the organic matter in the sewage has been shown in a laborator..
At the proportional limit, a 32-mm-thick by 87-mm-wide bar elongates 10.2 mm under an axial load of 532 kN. The bar is 2.4 m long. Poisson%u2019s ratio, , for the material is 0.27.
The tank has an inner diameter of 1.5 m and a wall thickness of 18 mm. If the pressure in the tank is p=1.20MPa, determine the force in the 16 bolts that are used to attach the cap to the tank. Also, specify the state of stress in the wall of the ..
A closed tank having a volume of 1.0 ft3 is filled with 0.15 lb of a gas. A pressure gage attached to the tank reads 12 psi when the gas temperature is 80? F. There is some question as to whether the gas in the tank is oxygen or helium. Which do you ..
At Point A in a pipeline carrying water (? = 62.4 lb/ft3) the diameter is 3.0 ft, the pressure is 11 psi, and the velocity 4 ft/s. At Point B, 6 ft higher than Point A, the diameter is 2.5 ft and the pressure is 4 psi
determine the required minimum wall thickness t of the shaft to the nearest millimeter to safely support the load.
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