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A clay soil of thickness H is allowed to drain on the top boundary through a thin sand layer. A vertical stress of σ is applied to the clay. The excess pore water pressure distribution is linear in the soil layer, with a value of ut at the top boundary and ub (ub > ut) at the bottom boundary. The excess pore water pressure at the top boundary is not zero because the sand layer was partially blocked. Derive an equation for the excess pore water pressure distribution with soil thickness and time.
Would a 30 slot stainless steel screen (2.0 m long; located at the bottom of the well) have sufficient collapse strength for this application?
The length of time the model must be operated to check the equivalent of 36 hours of operation for the prototype operation, in decimal format hours.
A fluid film 0.1 mm thick separates solid and surface. The fluid viscosity is 0.04 N*sec/m^2. Assuming the velocity distribution in the film is linear, find the terminal velocity of the block. The area of the cube in contact with the film is 0.25 ..
A quartzite sample in a compression testing machine is 180mm long and 54mm in diameter. what is the stress under a load of 100kN? if the modulus of elasticity is 102kN/mm2, find the strain develope in the sample.
Course Ab of a five sided traverse runs due north. From the giben balanced interior angles to the right, compute and tabulate the bearings and azimuths from north for each side of the traverses.
What is the average velocity of the body for the time interval, t = 0 and the time that it crosses the X-axis?
If the defect rate for the flash drivers is 0.5% and you randomly select four of them for inspection: a) What is the probability that none of them has a defect b) What is the probability that all four have a defect
If a mechanical device requires 450J of work to do 310J of work in lifting what is the efficiency of the device?
A circular torus of mean radius R has a thin walled circular cross-section of mean diameter d . Calculate the radius r of the neutral axis for the particular case where R=d
An ethanol plant distills alcohol from corn. The distiller processes 2.0 t/h of feed containing 15% alcohol and 82% water; the rest is inert material. The bottoms (waste) produced is 85% of feed and contains 94% water, 3.5% alcohol, and 2.5% inert..
develop a spreadsheet application that will display in a table the values of modulus of elasticity Ec for concrete having unit weight ranging from 95 pcf to 155 pcf (in steps of 5 pcf) and compressive strength ranging from 3500 to 7000 psi
For a given load increment, the time for 50% consolidation was 5 min 20 sec. How long will it take for 50 % consolidation of a similar clay layer in the field that is 8.2 ft thick & drained on one side only
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