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Consider the following activities and their durations. The original project schedule, using early activity starts, is shown below.

Activity	Task	Predecessors	Duration
A	Sign Contract	None	5 days
B	Design Survey	A	3 days
C	Identify Audience	A	7 days
D	Run Survey	B, C	30 days
E	Analyze Results	D	5 days
F	Create Presentation	E	5 days
G	Present to Client	E, F	2 days

· Reconfigure the network using critical chain project scheduling.

· What is the duration of the project?

· How much slack is currently available in the non-critical path?

· How long are the project and feeder buffers?

Examaple

2. Consider the following activities and their durations. The original project schedule, using early activity starts, is shown below. Reconfigure the network using critical chain project scheduling.

Activity Duration

A 5 days

B 30 days

C 10 days

D 10 days

E 15 days

What is the critical path? How much slack is currently available in the non-critical path? Reconfigure the network as a critical chain network. What is the new duration of the project? How long are the project and feeder buffers?

Solution:

In the current network configuration, the feeder path (Activities C and D) has 15 days of slack. Total project length is 50 days. When we reconfigure the network as shown below, the new project length is 37.5 days, the feeder buffer is 5 days and the project buffer is 12.5 days (half of the total project time savings reapplied as project buffer).

A (2.5)

B (15)

PB (12.5)

E (7.5)

D (5)

FB (5)

C (5)

37.5 Days

Developing the Project Schedule

Now that we have the structure and the resources allocated, it is time to create the schedule. There are various methods to this, but in essence, it is the assignment of resources to time. We have linked our resources to our finances in our budget and now (before implementation), we assign our resources time. Then, we determine a sequence of events with clear annotations regarding what resource comes before the other thus creating a timeline of events.

With this in mind and after conducting research on scheduling, develop a schedule of events and resources for this project.

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A (5)

B (30)

C (10)

D (10)

E (15)

Slack

50 Days