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HW _2 - CEG 4012 Homework 2 Name Due Mon Sep 19th 2011 Show...

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CEG 4012 Homework 2 Due Mon. Sep. 19 th 2011 Name:_________________________________ Show All Work 1. A footing must be designed to carry a load of 100 tons. Calculate the required diameter (feet) of a round, flexible footing using an allowable unit end bearing of 3 tsf (round up to the nearest whole foot). Next, calculate the immediate settlement (inches) under the center and edge of this footing if the underlying soil is a sandy clay with E = 200,000 psi and = 0.4. 2. Repeat problem 1 for a square , flexible footing. Calculate the immediate settlement at the center and a corner. Which footing (square or round) will experience the greatest differential settlement? 3. For the two-layer subsurface profile shown below, calculate the immediate settlement (inches) under the center of the flexible storage tank full of water: 4. Recalculate the immediate settlement (inches) in problem 3 if the lower, saturated clay layer is replaced by limestone with a rough surface. 5. Using the oedometer test data at the right: a) Plot the e-log p curve on a semi-log graph in landscape format and on one whole page (8.5” x 11”).
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