Zodiac Company produces a product that involves various activities shown in the
ID: 455517 • Letter: Z
Question
Zodiac Company produces a product that involves various activities shown in the network diagram below. Based on the information provided on the network diagram, please answer the questions that follow. (The times are in weeks)
A. Identify the critical path, and determine the project completion time?
B. Suppose you have encountered unexpected absenteeism and you are compelled to delay the start dates of some activities. Which activities would you consider to delay without adversely impacting the completion time of the project?
C. Determine the slack for the following activities:
(i) activity C
(ii) activity D
(iii) activity G
(iv) activity H
Suppose the customer needed the project sooner than the normal completion time, and has offered to pay an incentive of $500 for each week the project is completed below 100 weeks. Further, suppose that the cost of crashing each task is already computed, and it is found that crashing costs increase when the same activity is crashed for a second or third week as shown in the “Cost to Reduce Activity Duration” table below. Determine the maximum net incentive pay Zodiac would receive.
Cost to Reduce Activity Duration
TASK
FIRST WEEK
SECOND WEEK
THIRD WEEK
A
400
800
1600
B
390
550
700
C
350
450
400
D
100
300
900
E
70
400
850
F
250
450
700
G
250
600
900
H
520
700
1500
K
400
650
950
M
200
900
1100
Cost to Reduce Activity Duration
TASK
FIRST WEEK
SECOND WEEK
THIRD WEEK
A
400
800
1600
B
390
550
700
C
350
450
400
D
100
300
900
E
70
400
850
F
250
450
700
G
250
600
900
H
520
700
1500
K
400
650
950
M
200
900
1100
Explanation / Answer
A. Identify the critical path, and determine the project completion time
Answer :
Paths :
Critical Path :
ACFKM = 92
ACGHM = 92
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B. Suppose you have encountered unexpected absenteeism and you are compelled to delay the start dates of some activities. Which activities would you consider to delay without adversely impacting the completion time of the project?
Answer :
Activities B , D, E are not coming on critical path . So for delay we can consider B , D, E without adversely impacting the completion time of the project.
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c)
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D)
Here we have followed a rule that if we crash the activities which are coming on critical path . That will help to reduce the cost . Because all activity on critical path takes more time.
Naturally by crashing all the activity on path , rest of the activities also crashed within time.
So conclusion is that crash the project in 1 week for reducing the cost..
Paths Total ABFKM 10 15 14 20 26 85 ACFKM 10 22 14 20 26 92 ACGK 10 22 24 20 76 ACGHM 10 22 24 10 26 92 ADEHM 10 20 24 10 26 90Related Questions
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