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# Critical path analysis

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### Transcript

• 1. Planning &amp; schedulingmore complex projects
• 2. &#xF07D; helps to schedule and manage complex projects&#xF07D; developed to control large defense projects&#xF07D; help to plan all tasks that must be completed&#xF07D; helps to see where remedial actions needs to be taken&#xF07D; helps to identify the minimum length of time needed to complete a project&#xF07D; helps to identify which project steps should be accelerated to complete the project at time
• 3. &#xF07D; you cannot start some activities until others are finished (sequential activities)&#xF07D; other activities are not dependent on completion of any other task (parallel tasks)
• 4. &#xF07D; Step 1: List all activities in the plan &#x25E6; For each activity show: &#xF0A0; The earliest start date &#xF0A0; Estimated length of time it will take &#xF0A0; Whether it is parallel or sequential &#xF0A0; For sequential tasks, show which stage they depend on
• 5. &#xF07D; Step 2: Plot the activities as a circle and arrow diagrams &#x25E6; Cicles show events within the project, such as start and finish of tasks &#xF096; The number shown in the left hand half allows to identify each one easily &#x25E6; An arrow running between two circles shows the activity needed to complete that task &#xF096; A task description is written underneath the arrow &#xF096; The length of the task is shown above it
• 6. &#xF07D; You may find that you need to complete a project earlier than your CPA says is possible&#xF07D; You need to re-plan the project
• 7. &#xF07D; A variation on CPA that takes a slightly more skeptical view of time estimates made for each project stage&#xF07D; Time to use for each stage:T=(shortest time+4*likely time+ longest time)/6&#xF07D; This helps to bias time estimates away from the unrealistically short time-scales normally assumed
• 8. &#xF07D; What tasks must be carried out.&#xF07D; Where parallel activity can be performed.&#xF07D; The shortest time in which you can complete a project.&#xF07D; Resources needed to execute a project.&#xF07D; The sequence of activities, scheduling and timings involved.&#xF07D; Task priorities.&#xF07D; The most efficient way of shortening time on urgent projects.