The following are the results of a laboratory consolidation test: effective vertical stress (ton/ft? ) 0.25 0.5 1.0 2.0 4.0 void ratio 1.03 1.02 0.98 0.91 0.79 0.71 0.62 0.635 0.655 0.67 8.0 16.0 8.0 4.0 2.0 a. plot the results as void ratio vs. effective vertical stress (log scale). you may use excel (or some other plotting software) to plot the data points, but you must print out and sketch the consolidation curve by hand on the plot. b. determine the compression and recompression indices. determine the maximum past vertical effective stress using casagrande's construction method.