Question

Software Installation: You are the project manager of the software installation project (see figure & table) below. You would like to find the minimum-cost schedule for your project. There is a $1,000-per-week penalty for each week the project is delayed beyond week 25. In addition, your project team determined that indirect project costs are $2,500 per week. Oo un D FINISH START START I

Answer 1

Create a template as shown below and we can answer the questions comparatively easily.

Total cost of the project without crashing is 47000 + 6*1000 + 2500*31 = 130500

The slack of activity C is 7

The duration of the path B-D-F-I is 30

The duration of the critical path is 31

For the minimum cost schedule, the first activity to crash is H by 1

The minimum cost schedule stopped before crashing activity D by 1 week because crash cost per week > penalty plus indirect costs per week

_ 1 A Activity 1 x fc 4 B C Predecessor N Time I Crash J Final time E C Time 3 7 2 з в 4c A,B D N Cost 2000 5000 10000 3000 4000 8000 2000 6000 7000 F C Cost 4000 8000 12000 7000 5000 14000 2000 9000 15000 vun NW 00vw G H Max red $ per week 1000 3000 1000 4000 1000 2000 #DIV/0! 1000 4000 12 11 LOI- 23 21 30 23 30 21