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A cutting 9 m deep is to be excavated in saturated clay of unit weight 19 kN/m3. The design shear strength parameters are cu = 30 kN/ m2 and u = 0. A hard stratum underlies the clay at a depth of 11 m below ground level. Using Taylor’s stability coefficients, determine the slope angle at which failure would occur. What is the allowable slope angle if a factor of safety of 1.2 is specified?
The gases are expanded to 140 kPa with a reversible adiabatic process. Calculate the work done by the gases, assuming they can be approximated by air with constant specific heats.
A series of small packages, each with a mass of 0.5 kg, are discharged from a conveyor belt. Knowing that the coefficient of static friction between each package and the conveyor belt is 0.4, determine (a) the force exerted by the belt on the package
A firm is considering moving its manufacturing plant from Chicago to a new location. The industrial engineering department was asked to identify the various alternatives together with the costs to relocate the plant, and the benefits.
The Golden Gate Bridge has a main span of 4200 ft, a sag of 470 ft, and a total static loading of 21,300 lb/linear foot. Calculate the max tension, min tension, and the total length of cable.
A plate of aluminum is exposed to an atmosphere of Copper hydride,and on the other side of the plate, an atmospere that is deficientin copper hydride. If a steady state condition is achieved
Compute and compare the hydraulic conductivity (m/s) of a formation with respect to the three liquids below. The formation has a permeability k = 0.1 darcy and g = 9.8 m/s2. Liquid viscosity (g/cm s) density (g/cm3)
Flange thickness hf= 0.2h and web width bw=0.4. The member will be prestress using graded 270 strand. Time dependant losses are estimate at 20% of Pi. Normal density concrete will be used with f'c = 5000 psi
Determine the maximum shearing stress and any coexisting normalstress on the element and show these on a correctly orientedelement.
To avoid the salinization of soil in a farming area, parallel drainage canals are to be installed to maintain the water table at a depth of at least 4m below the ground surface. It is thought that no evapo-transpiration would occur below that dept..
A series of direct shear test has been performed on a dense well grades sand. all tests were performed on 3.00 in diameter, 1.25 in tall cylindrical specimens. and were run slowly enough to produce the drained condition. The results of these tests ar..
A soil sample with specific gravity of solids 2.70 has a mass specific gravity of 1.84 Assuming the soil to be perfectly dry,Determine the void ratio.
what is the engineering ethics case related to civil engineering with reference and discuss all the engineering ethics issues which covered the "Engineering etics concepte and cases?
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