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At a point in a saturated normally consolidated clay layer the soil is subject to an in-situ vertical effective stress of 50kPa. The soil at the point has a moisture content of 44% and a compression index of 0.45. The effective stress at the point is to be rapidly increased to 120kPa.
a) What would be the void ratio of the clay at the point immediately after increasing the stress?
b) What would be the void ratio at the point a long time after increasing the stress?
Assume the free miosture contents of the sand and gravel are 3% and 0.75% respectivley. The specific gravities of cement, sand, and gravel are 3.15,2.65,and 2.65 respectivley give the answer for cement in sacks, the sand, and gravel on pounds and the..
A 50-ohm electrical resistor carries a current of 5 amperes. The resistor is maintained at a temperature of 30o C. Determine the rate at which heat must be transferred to the surroundings
The National Institute for Occupational Safety and Health (NIOSH) sets standards for CCl4 in air at 12.6 mg/m^3 of air (a time average over 40 hr). The CCl4 found in a sample is 4800 ppb. Does the sample meet the NIOSH standard
A 1045 steel will be heat treated in air at 900 C. What is the carbon concentration at 0.4 mm below the surface after 6 hours
A streamlined, high-speed train travels at 200 km/hr. The flow over the train is similar to flow over a flat plate. Estimate the boundary layer thickness at the end of the train, which is 125 m long. The temperature is 10°C.
.An air turbine is used with a generator to generate electricity. Air at the turbine inlet is at 700 kPa and 25 degree C. The turbine discharges air in to the atmosphere at a temperature of 11 degree C.Inlet and outlet air velocities are 100 m/s and ..
A tape is calibrated and found to measure 100.04ft between the 0- and 100-ft marks. What measurements should be laid out to establish a horizontal distance of 682.25ft?
What is the largest circle that can be inscribed within a polygon with corner coordinates (600,800), (900, 300), (500, 100), and (100, 40) Find the radius of the largest circle and show how you found it from these coordinates.
Calculate total organic load reaching the plant per day and the population equivalent based on BOD5 of the combined wastewater flow for ultimate development condition (ie. end of the design period).
Write a MATLAB code that calculates the weight (forces due to gravity) in lbf on each planet of our solar system and earth's moon for probes/rovers which have a mass between 100 lbm and 300 lbm. Use increments of 20 lbm.
The maximum dry density determined in the laboratory for a quartz sand is 1800 kg/m^3. In the field, if the relative compaction is 90%, determine the hydraulic conductivity of the sand in the field compaction condition
What are the best dimensions for a trapezoidal canal having a side slopes of 1V : 3H and n = 0.020, if it is to carry 40 m^3/s uniformly on a slope of 0.009.
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