PM applications
Jiacheng Mai
GEP5re1.pptxGEP 5: PM Concepts B190, SPRING 2020
Student 1
Problem A: Greenville Electric
Draw the PERT/CPM network for this problem. For this problem please draw the network by hand.
Problem A: Greenville Electric
2. Determine ES, EF, LS, LF, and slack for each activity.
Also shows the answer in the Question 1
Screen shot.
Problem A: Greenville Electric
3. Determine the expected completion time and variance for each activity.
Problem A: Greenville Electric
4. Determine the total project completion time and the critical path for installing electrical wiring and equipment in residential houses.
Total project completion time = 36.33 days
Critical Path: C-D-E-F-H-K
Problem A: Greenville Electric
5. What is the probability that Johnson will finish the project described in 35 days or less?
Problem A: Greenville Electric
6. What is the probability that Johnson will finish the project described in 40 days or less?
If z= 1.61 then answer is 94.63%
Problem A: Greenville Electric
7. Explain the implications of the probabilities you computed for items 5 and 6.
Problem B:
Draw the PERT/CPM network for this problem. For this problem please draw the network by hand.
Problem B:
2. Determine ES, EF, LS, LF, and slack for each activity.
Also shows the answer in the Question 1
Screen shot.
Problem B:
3. Determine the project's expected completion time and its critical path.
Project expected completion time = 58 hours
Critical path : A-D-K
Problem B:
4. Can activities E and G be performed simultaneously without delaying the minimum project completion time? Explain your answer.
Problem B:
5. Can one person perform A, G, and I without delaying the project? Explain.
Problem B:
6. By how much can activities G and L be delayed without delaying the entire project?
G: can be delayed up to 7 hours
L: can be delayed up to 4 hours
Problem B:
7. How much would the project be delayed if activity G was delayed by 7 hours and activity L was delayed by 4 hours? Explain your answer.
Problem C:
1. Draw the PERT/CPM network for this problem. For this problem, you can choose if you want to draw the image by hand or use a computer application to draw this. Paste an image of your network on the slide
Problem C:
2. Compute for the crash cost per week.
20 weeks: $0
19 weeks: $2000
18 weeks: $4000
17 weeks: $6000
16 weeks: $8000
15 weeks: $10000
14 weeks: $15500
Problem C:
3. Determine the project's expected completion time and its critical path.
The critical path is A-C-G
The project’s expected completion time is 20 weeks
Problem C:
4. What is the total normal cost of the project?
The total normal cost of the project is $34500
Problem C:
5. What activity or activities can Jonah crash to shorten the campaign to 16 weeks?
Activity A and C will be crashed.
Problem C:
6. How much additional cost will Jonah incur if the project is crashed to 16 weeks?
$8000
Problem C:
7. As Jonah's campaign manager, recommend the most feasible strategy.
From 20 weeks to 15 weeks, the Crash cost is $2,000 dollars each week. Once come to 14 weeks, there will be a 50% increase over the previous week. Therefore, a efficiency table for each week and actual funds should be made to decide the right Crash schedule. If he still want to make the campaign at 16 weeks then he need to crash both A and C for 2 weeks.
