The project manager of a task force planning the construction of a domed stadium had hoped to be able to complete construction prior to the start of the next college football season. After reviewing construction time estimates, it now appears that a certain amount of crashing will be needed to ensure project completion before the season opener. Given the following time and cost estimates, determine a minimum-cost crashing schedule that will shave five weeks off the project length. Note: No activity can be crashed more than two weeks.

CRASHING COSTS ($000)

Activity Immediate Predecessor Normal Time (weeks) First Week Second Week A — 12 $15 $20 B A 14 10 10 C — 10 5 5 D C 17 20 21 E C 18 16 18 F C 12 12 15 G D 15 24 24 H E 8 — —

I F 7 30 —

J I 12 25 25 K B 9 10 10 M G 3 — —

N H 11 40 —

P H, J 8 20 20 End K, M, N, P

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