Question:
Published on: 6 June, 2023

Explain when and why you will use PERT charts and when and why you will use Gantt charts while you are a project manager.

Consider a software project with 5 activities T1 to T5. Duration of 5 activities in weeks are 3,2,3,5,2 respectively. T2 and T4 can start when T1 is complete. T3 can start when T2 is complete. T5 can start when both T3 and T4 are complete. Draw activity network for the project. When is the latest start date of the activity T3? What is the float of the activity T4? Which activities are on the critical path? Draw the Gantt chart also.

 TASKS DURATION DEPENDENT ON TASKS T1 3 ---------------- T2 2 T1 T3 3 T2 T4 5 T1 T5 2 T3,T4

 TASKS EARLIER START EARLIER FINISH LATEST START LATEST FINISH T1 0 3 0 3 T2 3 5 3 5 T3 5 8 5 8 T4 3 6 3 8 T5 8 10 8 10

LATEST START: It is the difference between MINIMUM time and the maximum of all paths from this task to the finish.

The latest start of T3 is 3.

FLOAT: It is the total time that a task may be delayed before it will affect theend time of the project.(Latest Start-earlier start)

The float of T4 is 0.

The activities that are on the critical path are T1, T4,T5.(they are the tasks that need to be performed in a sequence and which together takes the longest time to complete.)

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