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A fine-grained soil has a liquid limit of 200% and a plastic limit of 45%. The natural water content of the soil in the field is 60% and the clay content is 63%
a) calculate the plasticity index, the liquidity index, and the activity
b) What is the soil state (e.g., liquid) in the field?
d) The soil is under a rectangular concrete slab 15m x 50m, used as a foundation for a building. 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 on the foundation?
* if you could please draw a sketch of the existing trench and pipe, and show in another sketch hou you would mitigate an water related issue form the the and the soil. Explain why your mitigation method is better than the existing construction.
A geothermal power uses hot water (185oF) as a heat source and the cold water from a close by lake (60oF) as a heat sink. The basic operating system is a close loop ammonia efficiency of the cycle that powers turbine-driven electric generator (100..
The electric motor at A exerts a torque of 800N.m on the steel shaft from A to D. This has a torque of -300N.m at B and -500N.m at C. the dimensions are
The transportation agency would like to determine the maximum spacing of stations to allow trains to arrive no more than 5 minutes apart. 1. Draw a time-space diagram depicting the above scenario
For a brittle material that has a specific surface energy of 0.26J/m2, and flexural strength and elastic modulus valuesof 76.6 MPa and 64 GPa, respectively, calculate the critical stressrequired for the propagation of a surface crack of length 0.05 m..
A worker ties a rope oflength 12 m to he tower at A and exerts a constant force of 160 Non the rope. (a) Express the tension in each cable as a function oftheta knowing that the resultant of the tension in the cables andthe rope is directed downwa..
A wastewater treatment plant has two rectangular primary settling tanks, each 40 ft long, 12 ft wide, and 7 ft deep. The effulent weir length in each tank is 45 ft. The average daily wastewater flow is 387,000 gal.
A rear-wheel-drive 3000lb drag race car has a 200-inch wheel base and a center of gravity 20 inches above the pavement and 140 inches behind the front axle. The owners wish to achieve an initial acceleration from rest of 15 ft/s on a level paved s..
groundwater is pumped for domestic use from an unconfined aquifer. the thickness of the clay is 40%. after 10 years of pumping, the porosity is reduced to 30%. determine the subsidence of the clay surface.
An 1100 ft. straight line route survey, which had PI's at3+81.27 (I = 12o30') and 5+42.30 (I = 10o56'), laterhad 600 ft radius simple curves inserted at each PI. Computethe following: a)Curve data for each curve: Da, T, L, LC, E, and MO
During an experiment, the depth of a water flow in a flume is measured five times by using a ruler with 1/16-in division. The results from these measurements are 4.88 in, 5.06 in, 5.03 in, 5.13 in, 4.94 in. What is the instrumental error and what ..
It is thought that a new process for producing a certain chemical may be cheaper than the currently used process. Each process was run 6 times, and the cost of producing 100-L of the chemical was determined each time.
When water flows at 100 m3/hr, the pressure gauge immediately upstream of the basket strainer measures 1 bar. When the basket strainer is clean, the pressure immediately downstream measures 0.9 bar.
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