PROJ586 W3 Homework AIB Solutions 2
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 Activity B? (1 points)
Answer: Day 6
f) What is the LF for Activity H? (1 points)
Answer: Day 32
g) What is the float for Activity I? (1 points)
Answer: 0 Days
Problem 2
The following data were obtained from a project to build a pressure vessel:
Activity Duration Predecessors
A 6 weeks ---
B 6 weeks ---
C 5 weeks B
D 4 weeks A, C
E 5 weeks B
F 7 weeks D, E, G
G 4 weeks B
H 8 weeks F
I 5 weeks G
J 3 week I
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: 30 weeks
b) Identify the critical path (6 points)
Answer: B-C-D-F-H
c) What is the slack time (float) for activity A? (1 points)
Answer: 5 weeks
d) What is the slack time (float) for activity D? (1 points)
Answer: 0 weeks
e) What is the slack time (float) for activity E? (1 points)
Answer: 4 weeks
f) What is the slack time (float) for activity G? (1 points)
Answer: 5 weeks
Problem 3
The following data were obtained from a project to design a new software package:
Activity Duration Predecessors
A 5 Days ---
B 8 Days ---
C 6 Days A
D 4 Days C, B
E 5 Days A
F 4 Days D, E, G
G 4 Days B, C
H 3 Day G
Step 1: Construct a
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 Activity B? (1 points)
Answer: Day 6
f) What is the LF for Activity H? (1 points)
Answer: Day 32
g) What is the float for Activity I? (1 points)
Answer: 0 Days
Problem 2
The following data were obtained from a project to build a pressure vessel:
Activity Duration Predecessors
A 6 weeks ---
B 6 weeks ---
C 5 weeks B
D 4 weeks A, C
E 5 weeks B
F 7 weeks D, E, G
G 4 weeks B
H 8 weeks F
I 5 weeks G
J 3 week I
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: 30 weeks
b) Identify the critical path (6 points)
Answer: B-C-D-F-H
c) What is the slack time (float) for activity A? (1 points)
Answer: 5 weeks
d) What is the slack time (float) for activity D? (1 points)
Answer: 0 weeks
e) What is the slack time (float) for activity E? (1 points)
Answer: 4 weeks
f) What is the slack time (float) for activity G? (1 points)
Answer: 5 weeks
Problem 3
The following data were obtained from a project to design a new software package:
Activity Duration Predecessors
A 5 Days ---
B 8 Days ---
C 6 Days A
D 4 Days C, B
E 5 Days A
F 4 Days D, E, G
G 4 Days B, C
H 3 Day G
Step 1: Construct a