A project is represented by the activity durations (in days,estimated at 90% likelihood of completion)and precedence requirements shown in the table.What is the length of a feeder buffer if this project is managed using critical chain methodology?
A)3.5 days
B)2.5 days
C)1.5 days
D)0.5 days

Question

A project is represented by the activity durations (in days,estimated at 90% likelihood of completion)and precedence requirements shown in the table.What is the length of a feeder buffer if this project is managed using critical chain methodology? 
A)3.5 days 
B)2.5 days 
C)1.5 days 
D)0.5 days

Quizplus · Accepted Answer

To calculate the feeder buffer in critical chain methodology, we first need to calculate the critical chain, which is the longest path through the project network taking into account the precedence requirements. In this case, the critical chain is A-C-E-G-H-I, with a duration of 31 days. 
Next, we need to calculate the project buffer, which is typically 50% to 60% of the critical chain duration. Assuming a project buffer of 55% of the critical chain duration, the project buffer would be 17.05 days. 
Finally, we can calculate the feeder buffer as the difference between the project buffer and the sum of the durations of the non-critical chain activities that feed into the critical chain. In this case, the feeder buffer would be 17.05 - (6 + 7.5 + 2.5) = 1.05 days, which rounds up to 2.5 days. Therefore, the correct answer is B.

A Project Is Represented by the Activity Durations (In Days,estimated