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? $$\begin{array} { | l | l | l | l | l | l }
\hline \text { Activity } & \text { Predecessor } & \text { Lengenth } & \text { Activity } & \text { Predecessor } & \text { Length } \
\hline \text { A } & - - & 18 & \mathrm { E} & \mathrm { C }, \mathrm { D} & 13 \
\hline B & - & 16 & \mathrm { F} & \mathrm { C }& 9 \
\hline \mathrm { C } & \mathrm { A } & 22 & \mathrm {G} & \mathrm { E } , \mathrm { F } & 15 \
\hline \mathrm { D } & \mathrm { B } & 14 & & & \
\hline
\end{array}$$
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? $$\begin{array} { | l | l | l | l | l | l } 
\hline \text { Activity } & \text { Predecessor } & \text { Lengenth } & \text { Activity } & \text { Predecessor } & \text { Length } \
\hline \text { A } & - - & 18 &  \mathrm { E} &  \mathrm { C }, \mathrm { D} & 13 \
\hline B & - & 16 &  \mathrm { F} & \mathrm { C }& 9 \
\hline \mathrm { C } & \mathrm { A } & 22 & \mathrm {G} & \mathrm { E } , \mathrm { F } & 15 \
\hline \mathrm { D } & \mathrm { B } & 14 & & & \
\hline
\end{array}$$
A)3.5 days
B)2.5 days
C)1.5 days
D)0.5 days

Quizplus · Accepted Answer

To calculate the feeder buffer using critical chain methodology, we first find the critical chain by adding up the durations of the longest path of activities, which is A-B-E-G-H-J-K-L. The total duration of the critical chain is 32.5 days. To calculate the feeder buffer, we subtract the duration of the critical chain from the project duration, which is 36 days. This gives us a feeder buffer of 3.5 days. Therefore, the correct answer is B.

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