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The initial effective stresses on a saturated soil element at a certain depth in a soil mass are σ'1 5 80 kPa, σ'2 = 40 kPa, and σ'3 = 40 kPa. The groundwater level is below the depth of the soil element. A sudden outward movement of a retaining wall that was retaining the soil resulted in the following changes in stresses: ?σ1 = 0 kPa, ?σ2 (parallel to wall) = -10 kPa, and ?σ3 (normal to wall) = -40 kPa.
(a) Plot the initial stress state and the total stress path in (p, q) space.
(b) Plot the effective stress path assuming that the soil is a linearly elastic material.
(c) Determine the maximum excess pore water pressure.
A sprinkler system uses an outdoor reservoir at El 50. A fire pump moves Q = 3 ft^3/sec through a 1.0' dia pipe 300' long to an 8" dia main at El 200. To distribute water to sprinklers, a pressure head at the pipe junction hp =100' is required.
To provide knowledge and practice AutoCAD software package for engineering activities.
An airplane A takes off with a constant speed equal to vo=200 km/h. The path of the airplane is described by the equation y=kx^2, where k=6 x 10^-4 m^-1. Provide the expression for the velocity and acceleration of the airplane when x=390m. Express th..
A sample of 10 television tubes produced by a company showed a mean lifetime of 1200 hours and a standard deviation of 100 hours. Estimate
Determine: a) the height of the water, with respect to the base of each standpipe, and b) the effective stress at the depth of each standpipe, at the following times:
The steel beam ABCD is simply supported at A (pin) and supported at B and D by steel cables each having a diameter of 12mm. A force of 20 kN is applied at point C. For steel, let E = 209 GPa.
A maximum flow rate of 6 CFS is available for a river model. This corresponds to 30,000 CFS for the prototype. What is the scale of the model in terms of the prototype size?
The yield stress for A-36 is 250 MPa. Using factor of safety against yield of 1.25, determine an appropriately sized beam such that the radius of curvature is not less than 140m. E= 200 GPa, G= 77.2 GPa.
A tensile load of 220 KN is applied to a round metal bar with a diameter of 16 mm and a gage length of 50 mm. Determine the modulus ofelasticity and Poisson's ratio for this metal
Two passenger cars are traveling at 65 MPH on a highway moving in the same direction in the same lane. The cars are separated by 25 feet for every 10 MPH of their speed. The coefficient of friction (skidding resistance) between the tires and the r..
A 25' wide and 35' high concrete dam with a 25' deep and .3' wide cutoff wall at theupstream end of the dam is retaining 25' of water. Bottom of this dam is 5' below the surface of the soil. Assuming zero tail water, please answer the following quest..
Wheeling-Pittsburgh Steel is investigating whether it should it should replace some of the basic oxygen furnace equipment now or wait to do it later. The cost later (i.e. 3 years from now) is estimated to be $1,700,000.
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