Crashing - Deciding what to tackle first Given the data and information that follows in this example, compute the slope and maximum reduction time for each activity. Also compute the total direct costs for durations 32, 31, 30, 29, 28, and 27 time-units. Assume indirect costs of $170, $150, $129, $122, $118, and $110, respectively, for each listed duration. What are the optimum project duration and cost? FANSHAWE COLLEGE 2 An example of a crash impact table Activity ID Maximum crash time Crash Slope Direct costs Normal Time Cost Time 7 50 5 Cost A 70 B 16 14 15 20 12 4 10 12 D 8 21 7 30 E 6 10 3 19 F 13 22 12 30 FANSHAWE COLLEGE 3 The first decision D TIME 32 B 16 LEGEND 8 ACT DUR E 7 6 TOTAL DIRECT COST S F 12 13 B D TIME TOTAL DIRECT COST | F ACTIVITIES CHANGED FANSHAWE COLLEGE The 2nd and 3rd decision Exercise 6-2 TIME B D TOTAL DIRECT COST $ E ACTIVITIES CHANGED C F TIME B D E TOTAL DIRECT COST $ ACTIVITIES CHANGED lo F FANSHAWE COLLEGE The 4th and 5th decisions TIME B D A TOTAL DIRECT COST $ E ACTIVITIES CHANGED F TIME B D TOTAL DIRECT COST A E ACTIVITIES CHANGED F FANSHAWE COLLEGE The total impact 27 28 29 30 31 32 Project Duration Total Direct Total Indirect S110 $118 S122 $129 S150 $170 Grand Total FANSHAWE COLLEGE