562 words - 3 pages

Problem 1

Activity Duration Predecessors

A 3 Days ---

B 4 Days ---

C 6 Days ---

D 2 Days A, B

E 1 Days C

F 3 Days D

G 3 Days E, F

H 7 Days D

I 10 Days G

a. For the above information, draw an AIB diagram.

[pic]

Slack or Float = LF – EF or LST – EST

Activities on the critical path have zero slack/float.

b. What is the Scheduled Completion of the Project? 22 Days

c. What is the Critical Path of the Project? B-D-F-G-I

d. What is the EST for Activity D? Day 4

e. What is the LST for Activity G? Day 9

f. What is the EF for Activity B? Day 4

g. What is the LF for Activity H? Day 22

h. What is the float for Activity I? 0 Days

Problem 2

The following ...view middle of the document...

Scheduled completion time = 20 weeks

Critical Path = B, C, D, F, H

c. What is the slack time (float) for activities A, D, E, and G?

A=3 weeks

D=0 weeks

E=2 weeks

G=3 weeks

Problem 3

The following data were obtained from a project to design a new software package:

Activity Duration Predecessors

A 3 Days ---

B 6 Days ---

C 4 Days A

D 2 Days C, B

E 3 Days A

F 2 Days D, E, G

G 2 Days B, C

H 1 Day G

a. Construct a network for the project.

[pic]

Slack or Float = LF – EF or LST – EST

Activities on the critical path have zero slack/float.

b. Calculate the scheduled completion time and identify the critical path(s).

Scheduled completion = 11 days.

Critical path 1 = A, C, D, F

Critical path 2 = A, C, G, F

Activities D and G are run in parallel. (On a quiz or on the final exam, you would have one clear path. You wouldn’t see something like DG)

b. What is the slack time (float) for activities B, D, E, and G?

B=1 days

D=0 days

E=3 days

G=0 days

Problem 4

The following data were obtained from an in-house MIS project:

Activity Duration Predecessors

A 3 Days ---

B 6 Days ---

C 3 Days A

D 2 Days B

E 3 Days B

F 1 Day C, D

G 5 Days C, D

H 4 Days E, F, G

I 7 Days E, F

a. Construct a network for the project.

[pic]

Slack or Float = LF – EF or LST – EST

Activities on the critical path have zero slack/float.

b. Calculate the scheduled completion time and identify the critical path.

Scheduled completion = 17 days. Critical path = BDGH

c. What is the slack time (float) for activities A, D, E, and F?

A=2 days

D=0 days

E=1 day

F=1 day

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