Proj586 W3 Homework Aib Solutions

676 Words Oct 21st, 2012 3 Pages
Problem 1

The following data were obtained from a project to create a new portable electronic.

Activity Duration Predecessors
A 5 Days ---
B 6 Days ---
C 8 Days ---
D 4 Days A, B
E 3 Days C
F 5 Days D
G 5 Days E, F
H 9 Days D
I 12 Days G

Step 1: Construct a network diagram for the project. (NOTE: EF for activity H should be 19)

Step 2: Answer the following questions: (15 points total)

a) What is the Scheduled Completion of the Project? (5 points)
Answer: 32 days

b) What is the Critical Path of the Project? (5 points)
Answer: B-D-F-G-I

c) What is the ES for Activity D? (1 points)
Answer: Day 6

d) What is the LS for Activity G? (1 points)
Answer: Day 15

e) What is the EF for
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Step 2: Answer the following questions: (15 points total)

a) Calculate the scheduled completion time. (5 points)
Answer: 19 days

b) Identify the critical path(s) (6 points)
Answer: There are 2 critical paths.
Critical Path 1: A-C-D-F
Critical Path 2: A-C-G-F

c) What is the slack time (float) for activity B? (1 points)
Answer: 3 days

d) What is the slack time (float) for activity D? (1 points)
Answer: 0 days

e) What is the slack time (float) for activity E? (1 points)
Answer: 5 days

f) What is the slack time (float) for activity G? (1 points)
Answer: 0 days

Problem 4

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

Activity Duration Predecessors
A 5 Days ---
B 8 Days ---
C 5 Days A
D 4 Days B
E 5 Days B
F 3 Day C, D
G 7 Days C, D
H 6 Days E, F, G
I 9 Days E, F

Step 1: Construct a network diagram for the project.

Step 2: Answer the following questions: (15 points total)

a) Calculate the scheduled completion time. (5 points)
Answer: 25 days

b) Identify the critical path (6 points)
Answer: B-D-G-H

c) What is the slack time (float) for activity A? (1 points)
Answer: 2 days

d) What is the slack time (float) for activity D? (1 points)
Answer: 0 days

e) What is the slack time (float) for activity E? (1

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