Question
Download Solution PDFIn PERT analysis, a critical activity has:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Critical activity:
Critical activities are those activities whose float is zero and they lie on the critical path.
Float:
Relax or delay provided to any activity is known as float.
Floats are of three types. They are as follows:
Total Float (TF):
The maximum delay or relax provided to any activity without affecting the project duration.
TF = Lj – Ei – dij
Free Float (FF):
Relax or delay provided to any activity without affecting the Earliest Start Time (EST) of the successor activity.
FF = Ej – Ei – dij
Independent Float:
Relax or delay provided to any activity without affecting the Earliest Start Time (EST) of successor activity as well as Latest Finish Time (LFT) of the predecessor activity.
IF = Ej – Li - dij
Relation among float TF ≥ FF ≥ IF
Critical Path:
- The longest path in the network diagram is called Critical Path.
- The length of the Critical Path determines the minimum duration required for the completion of the project.
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