4) The following table includes results of a laboratory consolidation test: Pressure c." Void ratio a tonfrft ' {1.25 1.03 0.5 1.02 1.3 [1.93 2.11} {191 4.13 11.79 41.71 16.13 {162 0.635 [1.635 13.6? 3. Draw the elog Ca" graph and determine the preconsolidation pressure (To h. Calculate the compression index (C?) and the swelling index (CE) c. If 0'") = 0.6 tonfftz, estimate the over consolidation ratio OCR d. Estimate the consolidation settlement 'Sc' for a total effective stress increment ofU'I f) tonfft2 imposed to a clay layer of 6 ft thickness