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A CU triaxial test with σc = 20 psi is performed on a sand and a deviator stress of 80 psi fails the specimen. Previous tests revealed that the effective friction angle for this sand is 35°. Calculate the pore water pressure at failure.
Calculate the required area of an air to air heat exchange to cool 20,000 cfm from 1200 F to 400 F. Assume ambient air at 80 F will be heated to 800 F by the exchange. Assume heat losses are 10 % and that the overall heat transfer coefficient is 1.0 ..
The concrete cylinder 6 in x 12 in broke incompression at a load of 110000 lbs. Compute the crushing strength of concrete. Estimate the tensile strength and the modulus ofelasticity.
Determine the forces that occur on the L5/S1 joint if a person has a bent posture with hips flexed at 65 Degrees with no load. The distance from Upper Body Center of Gravity to L5/S1=30cm.
What is the formula to find the Maximum pressure on a form, and what information is needed to find the maximum pressure on the form?
Two different fluids flow over two identical flat plates with the same laminar free-stream velocity. Both fluids have the same viscosity, but one is twice as dense as the other. What is the relationship between the drag forces for these two plates
A balloon is being inflated at the rate of 15m^3/min. At what rate is the diameter increasing after 5 min? Assume that the diameter is zero at time zero.
If the front edge of a contaminant plume is perfectly straight, how long would it take to travel to Well 1 after first arriving (simultaneously) at Wells 2 and 3, assuming that the contaminant plume travels only half as fast as the groundwater flo..
A reverse osmosis plant desalinates 5*10^6 L/day of feedwater containing 1500 mg/l of salt, yeilding 3*10^6L/day of product water with 75 mg/l of salt. What would be the salt concentration be in the brine?
Plot the power input to the compressor and the electric power saved by using a heat pump rather than electric resistance heating as functions of compressor efficiency, and discuss the results.
Runoff from a storm flows into a reservoir with a surface area of 20.0 ha at a constant rate. The reservoir level is observed to rise at 1 mm per minute when water is being released through the dam at a rate of 10 m3 per second.
a vertical curve with grade1= 3.6% meets the exit grade of -4.7% at PVI located at station 26.50. A vertical curve of 700 feet is propsed to provide the transition between the two grades.
For the FE pin-pin cable model, solve for the deflection and reactions using the partitioned form. What is partitioned form
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