crashing assignment (1) - Assignment Time-Cost Trade-Offs...

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Assignment Time-Cost Trade-Offs Activity Predecessor Total Normal time (day) Total Crash time (day) Total Normal cost ($) Total Crash cost ($) Available crashing days Crashing cost per day (cost slope) A --- 6 5 60 90 1 30 B --- 7 4 50 230 3 60 C A 6 4 100 180 2 40 D A 7 7 30 30 0 - E B 5 4 70 90 1 20 F C 9 7 40 110 2 35 G E, D 7 4 50 110 3 20 Overhead project costs (Indirect costs) are $55 per day. Please crash the project and find the project schedule with the lowest total cost (indirect cost + direct cost). Rule of thumb: Crash the project one period at a time. Crash the least expensive activity that is on the critical path. Critical path will very likely change after each crashing, find new critical path each time before crashing. Time: 21 days, Total Direct Cost: $ 400
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Critical Path: A-C-F Time: 20 days, Total Direct Cost: $ 430 Critical Path: A-C-F
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