# Aib Problems and Solutions

Essay by Woxman • September 9, 2012 • Study Guide • 443 Words (2 Pages) • 3,822 Views

**Page 1 of 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.

Step 2: Answer the following questions:

a) What is the Scheduled Completion of the Project?

Answer = 32 Days

b) What is the Critical Path of the Project?

Answer = B, D, F, G, I

c) What is the ES for Activity D?

Answer = Day 6

d) What is the LS for Activity G?

Answer = Day 15

e) What is the EF for Activity B?

Answer = Day 6

f) What is the LF for Activity H?

Answer = Day 32

g) What is the float for Activity I?

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:

a) Calculate the scheduled completion time.

Answer = 30 weeks

b) Identify the critical path

Answer = B, C, D, F, H

c) What is the slack time (float) for activity A

Answer = 5 weeks

d) What is the slack time (float) for activity D?

Answer = 0 weeks

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

Answer = 4 weeks

f) What is the slack time (float) for activity G?

Answer

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