Assume that the activities in Problem 3.11 have the following costs to shorten: A, $300/week; B, $100/week; C, $200/ week; E, $100/week; and F, $400/week. Assume also that you can crash an activity down to 0 weeks in duration and that every week you can shorten the project is worth $250 to you. What activities would you crash? What is the total crashing cost?
The following is a table of activities associated with a project at Rafay Ishfaq's software firm in Chicago, their durations, and what activities each must precede:
|
ACTIVITY
|
DURATION (WEEKS)
|
PRECEDES
|
|
A (start)
|
1
|
B, C
|
|
B
|
1
|
E
|
|
C
|
4
|
F
|
|
E
|
2
|
F
|
|
F (end)
|
2
|
-
|
a) Draw an AON diagram of the project, including activity durations.
b) Define the critical path, listing all critical activities in chronological order.
c) What is the project duration (in weeks)?
d) What is the slack (in weeks) associated with any and all noncritical paths through the project?