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Homework 3 - 2011 - a What is the N 60 value at this depth...

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The University of Missouri-Columbia Department of Civil Engineering Assigned: Monday, September 12, 2011 Due: Friday, September 16, 2011 CE 3400 – Fall 2011 Homework No. 3 – Site Investigation 1. An SPT measurement is made at a depth of 20 ft below the ground surface. The recorded blow counts or successive 6 in penetrations are 7-12-11. Assume this measurement was made using equipment with 60% efficiency.
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Unformatted text preview: a. What is the N 60 value at this depth? b. If the effective stress at this depth is 1200 psf, what is the value of N 1,60 ? (see pg 93 to 95 of Coduto) 2. A Shelby tube for sampling has an outside diameter of 3 inches and a wall thickness of 1/16 in. Compute the area ratio of the sampler. 3. Work Problem 3.7 in Coduto. 4. Work Problem 3.9 in Coduto 5. Work Problem 3.26 in Coduto...
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