Problem 3: The soil profile at your site is as follows: Depth Average N60 Unit weight (pcf) 0-20 11 blows/ft 20-50 32 blows/ft 50-80 35 blows/ft 115 120 123 The depth of the water table is 10 ft Develop a bearing graph using the profile for shaft diameters of 2, 3,4. 5, 6, 7, 8 ft. Include shaft lengths from 10 ft to 50 ft at 5 ft intervals. Plot axial capacity on the horizontal axis and shaft length on the vertical axis. Using your bearing graph, estimate the cost of the shaft dimensions that would have allow able capacities of 100 tons, using a factor of safety of 3 and unit cost figures provided below. Not the minimum permissible L/B ration for drilled shafts is three Shaft Diameter 2 ft 3 ft 4 ft 5 ft 6 ft 7 ft 8 ft Cost/Ft $100 $90 $120 $205 $325 $450 $585 Problem 3: The soil profile at your site is as follows: Depth Average N60 Unit weight (pcf) 0-20 11 blows/ft 20-50 32 blows/ft 50-80 35 blows/ft 115 120 123 The depth of the water table is 10 ft Develop a bearing graph using the profile for shaft diameters of 2, 3,4. 5, 6, 7, 8 ft. Include shaft lengths from 10 ft to 50 ft at 5 ft intervals. Plot axial capacity on the horizontal axis and shaft length on the vertical axis. Using your bearing graph, estimate the cost of the shaft dimensions that would have allow able capacities of 100 tons, using a factor of safety of 3 and unit cost figures provided below. Not the minimum permissible L/B ration for drilled shafts is three Shaft Diameter 2 ft 3 ft 4 ft 5 ft 6 ft 7 ft 8 ft Cost/Ft $100 $90 $120 $205 $325 $450 $585