2. What effect will each of the following changes (when considered separately) have on the critical path(s) and the completion time of the overall project? Give reasons for your answer.
- Activity D is delayed by 2 weeks.
- Activity G is completed in 8 weeks.
3. Clearly show how the project network you have drawn in (b) above needs to be amended to represent the logical constraint that activity O cannot start until at least 4 days after activity M has finished. How are the overall project completion time and critical path(s) affected if this condition is imposed?
|
Task Name |
Completion time |
Start |
Finish |
Early Start |
Early Finish |
Late Start |
Late Finish |
Free Slack |
Predecessors |
|
Activity |
19 wks |
Thu 3/8/18 |
Wed 7/18/18 |
Thu 3/8/18 |
Wed 7/18/18 |
Thu 3/8/18 |
Wed 7/18/18 |
0 wks |
|
|
A |
3 wks |
Thu 3/8/18 |
Wed 3/28/18 |
Thu 3/8/18 |
Wed 3/28/18 |
Thu 3/8/18 |
Wed 3/28/18 |
0 wks |
|
|
B |
4 wks |
Thu 3/8/18 |
Wed 4/4/18 |
Thu 3/8/18 |
Wed 4/4/18 |
Thu 3/15/18 |
Wed 4/11/18 |
0 wks |
|
|
C |
4 wks |
Thu 3/8/18 |
Wed 4/4/18 |
Thu 3/8/18 |
Wed 4/4/18 |
Thu 3/15/18 |
Wed 4/11/18 |
0 wks |
|
|
D |
4 wks |
Thu 3/29/18 |
Wed 4/25/18 |
Thu 3/29/18 |
Wed 4/25/18 |
Thu 3/29/18 |
Wed 4/25/18 |
0 wks |
1 |
|
E |
4 wks |
Thu 3/29/18 |
Wed 4/25/18 |
Thu 3/29/18 |
Wed 4/25/18 |
Thu 5/31/18 |
Wed 6/27/18 |
9 wks |
1 |
|
F |
2 wks |
Thu 4/5/18 |
Wed 4/18/18 |
Thu 4/5/18 |
Wed 4/18/18 |
Thu 4/12/18 |
Wed 4/25/18 |
1 wk |
2 |
|
G |
3 wks |
Thu 4/5/18 |
Wed 4/25/18 |
Thu 4/5/18 |
Wed 4/25/18 |
Thu 5/3/18 |
Wed 5/23/18 |
4 wks |
2 |
|
H |
4 wks |
Thu 4/5/18 |
Wed 5/2/18 |
Thu 4/5/18 |
Wed 5/2/18 |
Thu 4/26/18 |
Wed 5/23/18 |
2 wks |
2 |
|
I |
6 wks |
Thu 4/5/18 |
Wed 5/16/18 |
Thu 4/5/18 |
Wed 5/16/18 |
Thu 4/12/18 |
Wed 5/23/18 |
0 wks |
3 |
|
J |
4 wks |
Thu 4/5/18 |
Wed 5/2/18 |
Thu 4/5/18 |
Wed 5/2/18 |
Thu 5/3/18 |
Wed 5/30/18 |
0 wks |
3 |
|
K |
4 wks |
Thu 4/26/18 |
Wed 5/23/18 |
Thu 4/26/18 |
Wed 5/23/18 |
Thu 4/26/18 |
Wed 5/23/18 |
0 wks |
4,6 |
|
L |
5 wks |
Thu 5/24/18 |
Wed 6/27/18 |
Thu 5/24/18 |
Wed 6/27/18 |
Thu 5/24/18 |
Wed 6/27/18 |
0 wks |
7,11 |
|
M |
5 wks |
Thu 5/17/18 |
Wed 6/20/18 |
Thu 5/17/18 |
Wed 6/20/18 |
Thu 5/24/18 |
Wed 6/27/18 |
1 wk |
8,9 |
|
N |
4 wks |
Thu 5/3/18 |
Wed 5/30/18 |
Thu 5/3/18 |
Wed 5/30/18 |
Thu 5/31/18 |
Wed 6/27/18 |
4 wks |
10 |
|
O |
3 wks |
Thu 6/28/18 |
Wed 7/18/18 |
Thu 6/28/18 |
Wed 7/18/18 |
Thu 6/28/18 |
Wed 7/18/18 |
0 wks |
5,12,13,14 |
2.1 Task D gets delayed to 2 weeks. So, overall project completion time changes from 19 weeks to 21 weeks.
|
Task Name |
Completion time |
Start |
Finish |
Early Start |
Early Finish |
Late Start |
Late Finish |
Free Slack |
Predecessors |
|
Activity |
21 wks |
Thu 08-03-18 |
Wed 01-08-18 |
Thu 08-03-18 |
Wed 01-08-18 |
Thu 08-03-18 |
Wed 01-08-18 |
0 wks |
|
|
A |
3 wks |
Thu 08-03-18 |
Wed 28-03-18 |
Thu 08-03-18 |
Wed 28-03-18 |
Thu 08-03-18 |
Wed 28-03-18 |
0 wks |
|
|
B |
4 wks |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
0 wks |
|
|
C |
4 wks |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
0 wks |
|
|
D |
6 wks |
Thu 29-03-18 |
Wed 09-05-18 |
Thu 29-03-18 |
Wed 09-05-18 |
Thu 29-03-18 |
Wed 09-05-18 |
0 wks |
1 |
|
E |
4 wks |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 14-06-18 |
Wed 11-07-18 |
11 wks |
1 |
|
F |
2 wks |
Thu 05-04-18 |
Wed 18-04-18 |
Thu 05-04-18 |
Wed 18-04-18 |
Thu 26-04-18 |
Wed 09-05-18 |
3 wks |
2 |
|
G |
3 wks |
Thu 05-04-18 |
Wed 25-04-18 |
Thu 05-04-18 |
Wed 25-04-18 |
Thu 17-05-18 |
Wed 06-06-18 |
6 wks |
2 |
|
H |
4 wks |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 10-05-18 |
Wed 06-06-18 |
2 wks |
2 |
|
I |
6 wks |
Thu 05-04-18 |
Wed 16-05-18 |
Thu 05-04-18 |
Wed 16-05-18 |
Thu 26-04-18 |
Wed 06-06-18 |
0 wks |
3 |
|
J |
4 wks |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 17-05-18 |
Wed 13-06-18 |
0 wks |
3 |
|
K |
4 wks |
Thu 10-05-18 |
Wed 06-06-18 |
Thu 10-05-18 |
Wed 06-06-18 |
Thu 10-05-18 |
Wed 06-06-18 |
0 wks |
4,6 |
|
L |
5 wks |
Thu 07-06-18 |
Wed 11-07-18 |
Thu 07-06-18 |
Wed 11-07-18 |
Thu 07-06-18 |
Wed 11-07-18 |
0 wks |
7,11 |
|
M |
5 wks |
Thu 17-05-18 |
Wed 20-06-18 |
Thu 17-05-18 |
Wed 20-06-18 |
Thu 07-06-18 |
Wed 11-07-18 |
3 wks |
8,9 |
|
N |
4 wks |
Thu 03-05-18 |
Wed 30-05-18 |
Thu 03-05-18 |
Wed 30-05-18 |
Thu 14-06-18 |
Wed 11-07-18 |
6 wks |
10 |
|
O |
3 wks |
Thu 12-07-18 |
Wed 01-08-18 |
Thu 12-07-18 |
Wed 01-08-18 |
Thu 12-07-18 |
Wed 01-08-18 |
0 wks |
5,12,13,14 |
2.2 Task G gets completed in 8 weeks. So, overall project completion time changes from 19 weeks to 20 weeks.
|
Task Name |
Completion time |
Start |
Finish |
Early Start |
Early Finish |
Late Start |
Late Finish |
Free Slack |
Predecessors |
|
Activity |
20 wks |
Thu 08-03-18 |
Wed 25-07-18 |
Thu 08-03-18 |
Wed 25-07-18 |
Thu 08-03-18 |
Wed 25-07-18 |
0 wks |
|
|
A |
3 wks |
Thu 08-03-18 |
Wed 28-03-18 |
Thu 08-03-18 |
Wed 28-03-18 |
Thu 15-03-18 |
Wed 04-04-18 |
0 wks |
|
|
B |
4 wks |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 08-03-18 |
Wed 04-04-18 |
0 wks |
|
|
C |
4 wks |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 22-03-18 |
Wed 18-04-18 |
0 wks |
|
|
D |
4 wks |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 05-04-18 |
Wed 02-05-18 |
0 wks |
1 |
|
E |
4 wks |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 07-06-18 |
Wed 04-07-18 |
10 wks |
1 |
|
F |
2 wks |
Thu 05-04-18 |
Wed 18-04-18 |
Thu 05-04-18 |
Wed 18-04-18 |
Thu 19-04-18 |
Wed 02-05-18 |
1 wk |
2 |
|
G |
8 wks |
Thu 05-04-18 |
Wed 30-05-18 |
Thu 05-04-18 |
Wed 30-05-18 |
Thu 05-04-18 |
Wed 30-05-18 |
0 wks |
2 |
|
H |
4 wks |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 03-05-18 |
Wed 30-05-18 |
2 wks |
2 |
|
I |
6 wks |
Thu 05-04-18 |
Wed 16-05-18 |
Thu 05-04-18 |
Wed 16-05-18 |
Thu 19-04-18 |
Wed 30-05-18 |
0 wks |
3 |
|
J |
4 wks |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 10-05-18 |
Wed 06-06-18 |
0 wks |
3 |
|
K |
4 wks |
Thu 26-04-18 |
Wed 23-05-18 |
Thu 26-04-18 |
Wed 23-05-18 |
Thu 03-05-18 |
Wed 30-05-18 |
1 wk |
4,6 |
|
L |
5 wks |
Thu 31-05-18 |
Wed 04-07-18 |
Thu 31-05-18 |
Wed 04-07-18 |
Thu 31-05-18 |
Wed 04-07-18 |
0 wks |
7,11 |
|
M |
5 wks |
Thu 17-05-18 |
Wed 20-06-18 |
Thu 17-05-18 |
Wed 20-06-18 |
Thu 31-05-18 |
Wed 04-07-18 |
2 wks |
8,9 |
|
N |
4 wks |
Thu 03-05-18 |
Wed 30-05-18 |
Thu 03-05-18 |
Wed 30-05-18 |
Thu 07-06-18 |
Wed 04-07-18 |
5 wks |
10 |
|
O |
3 wks |
Thu 05-07-18 |
Wed 25-07-18 |
Thu 05-07-18 |
Wed 25-07-18 |
Thu 05-07-18 |
Wed 25-07-18 |
0 wks |
5,12,13,14 |
The activity O cannot get started until at least 4 days after the activity M has finished. Therefore, the completion time for activity O is 5.4 weeks. The overall completion time of the project does not get affected.
|
Task Name |
Duration |
Start |
Finish |
Early Start |
Early Finish |
Late Start |
Late Finish |
Free Slack |
Predecessors |
|
Activity |
19 wks |
Thu 08-03-18 |
Wed 18-07-18 |
Thu 08-03-18 |
Wed 18-07-18 |
Thu 08-03-18 |
Wed 18-07-18 |
0 wks |
|
|
A |
3 wks |
Thu 08-03-18 |
Wed 28-03-18 |
Thu 08-03-18 |
Wed 28-03-18 |
Thu 08-03-18 |
Wed 28-03-18 |
0 wks |
|
|
B |
4 wks |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 15-03-18 |
Wed 11-04-18 |
0 wks |
|
|
C |
4 wks |
Thu 08-03-18 |
Wed 04-04-18 |
Thu 08-03-18 |
Wed 04-04-18 |
Tue 13-03-18 |
Mon 09-04-18 |
0 wks |
|
|
D |
4 wks |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
0 wks |
1 |
|
E |
4 wks |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 29-03-18 |
Wed 25-04-18 |
Thu 31-05-18 |
Wed 27-06-18 |
9 wks |
1 |
|
F |
2 wks |
Thu 05-04-18 |
Wed 18-04-18 |
Thu 05-04-18 |
Wed 18-04-18 |
Thu 12-04-18 |
Wed 25-04-18 |
1 wk |
2 |
|
G |
3 wks |
Thu 05-04-18 |
Wed 25-04-18 |
Thu 05-04-18 |
Wed 25-04-18 |
Thu 03-05-18 |
Wed 23-05-18 |
4 wks |
2 |
|
H |
4 wks |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 05-04-18 |
Wed 02-05-18 |
Tue 24-04-18 |
Mon 21-05-18 |
2 wks |
2 |
|
I |
6 wks |
Thu 05-04-18 |
Wed 16-05-18 |
Thu 05-04-18 |
Wed 16-05-18 |
Tue 10-04-18 |
Mon 21-05-18 |
0 wks |
3 |
|
J |
4 wks |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 05-04-18 |
Wed 02-05-18 |
Thu 03-05-18 |
Wed 30-05-18 |
0 wks |
3 |
|
K |
4 wks |
Thu 26-04-18 |
Wed 23-05-18 |
Thu 26-04-18 |
Wed 23-05-18 |
Thu 26-04-18 |
Wed 23-05-18 |
0 wks |
4,6 |
|
L |
5 wks |
Thu 24-05-18 |
Wed 27-06-18 |
Thu 24-05-18 |
Wed 27-06-18 |
Thu 24-05-18 |
Wed 27-06-18 |
0 wks |
7,11 |
|
M |
5.4 wks |
Thu 17-05-18 |
Fri 22-06-18 |
Thu 17-05-18 |
Fri 22-06-18 |
Tue 22-05-18 |
Wed 27-06-18 |
0.6 wks |
8,9 |
|
N |
4 wks |
Thu 03-05-18 |
Wed 30-05-18 |
Thu 03-05-18 |
Wed 30-05-18 |
Thu 31-05-18 |
Wed 27-06-18 |
4 wks |
10 |
|
O |
3 wks |
Thu 28-06-18 |
Wed 18-07-18 |
Thu 28-06-18 |
Wed 18-07-18 |
Thu 28-06-18 |
Wed 18-07-18 |
0 wks |
5,12,13,14 |
Kerzner, H. and Kerzner, H.R., 2017. Project management: a systems approach to planning, scheduling, and controlling. John Wiley & Sons.
Pinto, J.K., 2015. Project management: achieving competitive advantage. Prentice Hall.
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