Presentation is loading. Please wait.

Presentation is loading. Please wait.

Manjari Akella Pranava Nagpal B-Tech(CSE) 4 th Year.

Similar presentations

Presentation on theme: "Manjari Akella Pranava Nagpal B-Tech(CSE) 4 th Year."— Presentation transcript:

1 Manjari Akella Pranava Nagpal B-Tech(CSE) 4 th Year

2 What is it? Why do need it ? How it Works? Critical Path How to Identify Critical Path ? Example Alternative method

3 Algorithm for scheduling a set of project activities Important tool for effective project management Applied to any approach which is used to analyze a project network logic diagram Provides a graphical view of the project Predicts the time required to complete a project Identifies activities critical to maintaining schedule

4 Allows to monitor achievement of project goals Helps to see where remedial action needs to be taken to get a project back on course Allows to prioritize activities for the effective management of project completion Useful tool for scheduling the dependencies and controlling a project Efficient way of shortening time and scheduling project in given timeframe Allows to shorten the planned critical path of a project by pruning critical path activities, by fast tracking and/or crashing the critical path

5 Before using CPM, a project model is constructed that includes - List of all activities required to complete the project Time duration that each activity will take for completion The dependencies between the activities Using these values, CPM calculates – Critical Path Earliest and latest each activity can start and finish without making the project longer

6 CPM determines – Critical Activities, i.e. cannot be delayed Activities having float, i.e. can be delayed Total float-delay without effecting the project completion date Free float-delay without effecting the subsequent tasks

7 Sequence of project network activities which add up to the longest overall duration Represents the shortest time needed to complete a project If an activity of this path is delayed, the project will be delayed If project needs to be accelerated, the times for critical path activities should be reduced

8 Can be identified by determining the following parameters for each activity - Earliest Start: earliest time at which an activity can start given that its preceding activities are completed Earliest Finish: Earliest Start + Time taken to complete the activity Latest Finish: latest time at which activity can be finished without delaying the project Latest Start: Latest Finish – Time taken to complete the activity

9 Slack Time: Represents the amount of time by which the activity can be delayed LS-ES or LF-EF Critical Path: Path consisting of all activities whose slack time is zero ES=LS or EF=LF


11 CPM used for complex but routine projects – where uncertainty is low For fairly less routine projects, PERT (Program Evaluation and Review Technique) is used It takes into account uncertainty and allows to specifiy a range of duration for each activity


Download ppt "Manjari Akella Pranava Nagpal B-Tech(CSE) 4 th Year."

Similar presentations

Ads by Google