Operations Management: PERT
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The Crush-a-Matic is the name of the car being designed by Bobby and his friends for the local destruction derby next spring. They plan on working on this project after work and on weekends between now and the event. Bobby's friend Joe is the project planner and has come up with the following activities, times and sequences required to meet the deadline for the derby.
Activity Description Immediate Predecessor Normal Time (days) A Start -- 0 B Purchase Used Car A 14 C Design B 5 D Remove car interior completely B 2 E Rebuild transmission & drive train C, D 30 F Repair and tune engine E 15 G Install roll cage & driver's seat D 7 H Weld doors F, G 2 I Paint H 3 J Final test I 2
A. Determine the critical path for this project. (Do not submit your network diagram, just turn in the path letters. Example - W-T-V-Q)
B. Bobby's car painting connection is finding that his shop is a little slower than expected and would be willing to cut the guys a deal if they can get the car ready for paint earlier. Joe reviewed the project plan and found that three tasks may be shortened by two days; these activities are E, B, and G. Which activities would you choose to shorten, and why?
C. Recalculate the project completion time given the suggestions in part b, what is the new project completion time in days?
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Solution Summary
The problem set deals with issues under operations management: Crashing a project and estimating project duration.
Education
- B. Sc., University of Nigeria
- M. Sc., London South Bank University
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