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A sample of soil taken at a depth of 5 m in a homogeneous over consolidated saturated clay was testedunder standard triaxial CU conditions. Its water content was 48%. The soil was isotropically consolidated to a mean effective stress of 50 kPa and then unloaded to a mean effective stress of 15 kPa. The peak deviatoric stress reported by the soil technician is 20 kPa. The critical state friction angle is 32°. A one-dimensional consolidation test gave the following results: Cc = 0.32, Cr = 0.06, and OCR = 6. In the field, the groundwater level is at the ground surface.
(a) Is the reported peak deviatoric stress reasonable?
(b) Is the CU test, as conducted, representative of the in situ conditions? Justify your answer.
(c) Estimate the undrained shear strength of the in situ soil sample.
a. Describe the modes of formation for the three basic categories of naturally occurring rocks. Name three rocks form each category. b. Explain how the formation process affects how rocks are described and classified in engineering terms.
What can you do in the next semester, in side or out side of class, to exchange your experience in the civil engineering profession?
Suppose you are a member of an EPA enforcement team investigating the possible dumping of arsenic into Arbor Lake. You take water samples from the middle of the lake and find that the concentration is 90.0 ppb.
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Two aluminium bars (E = 70 GPa) are attached to regid support at the left and a cross-bar at the end. An iron bar (E = 200 GPa) is at attached to the rigid support at the left and there is a gap b = 0.6 mm between the right end of the iron bar and cr..
If the discharge is 500cfs, what power output may be expected from the turbine? Assume that the turbine efficiency is 90% and that the overall head loss is 1.5V 2/2g, where V is the velocity in the 7 ft penstock. Assume a=1.0 at all locations.
The Senate hearing committee demanded thecorporation’s officers to providecredible
The final mixture temperature is 360 R. Determine the pressure of the mixture, using (a) the ideal-gas equation of state and (b) the compressibility chart and Dalton's law.
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The angle between the two concurrent forces is 90° and their resultant is 25ooN. The resultant makes an angle of 45° with one of the force. Determine the magnitude of each force
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