Question

Crashing 6. When deciding on whether or not to crash project activities, a project manager was faced with the following information. Activities of the critical path are highlighted with an asterisk: 1992 Normal Crashed Activity A B* Extra Cost $4,000 $3,000 $3,500 D* Cost $5,000 $10,000 $3,500 $4,500 $1,500 $7,500 $3,000 $2,500 Duration 4 weeks 5 weeks 2 weeks 6 weeks 3 weeks 8 weeks 7 weeks 6 weeks $4,000 $2,500 Duration 3 weeks 4 weeks 1 week 4 weeks 2 weeks 7 weeks 6 weeks 5 weeks E* $5,000 $2,500 $3,000 a. Identify the sequencing of the activities to be crashed in the first four steps. Which of the critical activities should be crashed first? Why?
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Answer 1

While Crashing a critical crash Crashing a project activities we actuittes according to cost Slope Cont Slope - Extra Cost Reduckich in duration any Critical le if activites have Cast Slope less means that activity will gincur less extra cost for same amount of crashing in duration of protect. Compose to other critical activities. We are Crashing only critical activities because Crashing Other activities will not Reduce the project durction, Crash deration B² Cos Available . Critical activity Cost Slope B* 5.4=1 3000 – 3000 /weck 5-4 4000 - 2000/week 6.422 3-2=1 - 2500 25001 week 3:2 7-6:11 2500 3-l = 2500/wels

for 1st week Crashers. & Choosed (least cost Slope for 2nd week crashing - Choose is (as 2 week available for D) for 3rd week Crashing - Choose either say E Choosed or n (as both have some Cost Slope for 4th week be will be choosen