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Manish Purwar, iZenBridge
   How to create Network diagram?
   How to find out Critical Path?
   Finding out float of an activity
   Schedule compression techniques
   Understanding of critical path analysis & schedule
    compression techniques
   Will help in managing projects better in real life
   Will help in solving 10 to 15 questions in PMP exam
   Activity   A does not have any dependencies on other activities.
   Activity   B, can only be started once A is complete.
   Activity   C, can be started once B is complete.
   Activity   D can be started once A is complete.
   Activity   E can be started once C & D are complete.



   Network diagram helps in visualizing the relative order and
    dependencies of these activities on each other.
   Precedence Diagramming Method (PDM) or Activity on Node
    (AON)
    • Network diagram shows dependencies
    • In PDM, boxes are used to show activities and arrows to
      show relationships.
    • Activities are put in the order they need to be performed
    • Network diagram is not concerned with when the activities
      will occur on the project timeline

                 Activity
                                    Activity 2
                    1

                                                    End
        Start



                            Activity 3
   Mandatory dependencies
    • Something MUST BE done before something else.
   Discretionary dependencies
    • There is preferred method, or order, of performing the
      work.
   External dependencies
    • Something outside the project must be done before a task
        in the project.
   Finish to Start (FS) : The successor can’t start before the
    predecessor has finished.
   Start to Start (SS) : The successor can’t start before the
    predecessor has started.
   Finish to Finish (FF) : The successor can’t finish before the
    predecessor has finished.
   Start to Finish (SF) : The successor can’t finish before the
    predecessor has started. It is rarely used.
   Finish to Start is most commonly used relationship.

    Finish to Start            Start to Start            Finish to Finish

Dig a                                                         Finish testing
              Plant tree          Start design
hole
                                                          Finish documentation

                           After 2 weeks, start coding
3 weeks                8 weeks
                      3              6       6           14
                             B                       C

                      3              6       6           14
        3 weeks                                                    5 weeks
        0         3                                           14         19
Start       A                                                        E        End
        0         3              6 weeks                      14         19

                                 3               9
                                         D
                                 8           14




                                                                               8
   Longest duration path in a Network Diagram
   It is the shortest time to complete the project
   It helps to determine the focus for project management
    efforts
   Near critical path is close in duration to critical path
   Closer the near critical and critical paths are, the more risk
    project has
3 weeks                8 weeks
                          3              6       6           14
                                 B                       C

                          3              6       6           14
        3 weeks
                                                                       5 weeks
        0         3                                               14         19
Start       A                                                            E        End
        0         3                  6 weeks                      14         19

                                     3               9
                                             D
                                     8           14




        Start, A, B, C, E, End
                or
        Start, A, D, E, End

                                                                                   10
   Total Float (slack)
    • The amount of time an activity can be delayed with out
       delaying project end date.
   Project Float (slack)
    • Amount of time project can be delayed with out delaying
       externally imposed project completion date.
   Critical path activities have zero float.
   Knowing float helps in better allocation of resources.
   If project is behind an imposed external date, then project
    will have negative float.
ES                  EF        Forward
                                                  Pass



    Backward        LS                  LF
    Pass




    ES : Early Start
    LS : Late Start               Float = LS-ES      OR     Float = LF-EF
    EF : Early Finish
    LF : Late Finish

ES and EF are calculated by Forward Pass.
LS and LF are calculated by Backward Pass.


                                                                            12
3             6    6            14
                                        B                   C
                                     3 weeks                8
                                 3             6    6     weeks 14


          0             3                                              14
                 A                                                              E 19
Start         3 weeks                                                        5 weeks      End
          0             3                                               14         19

                                           3             9
                                                  D
                                               6 weeks
                                           8             14




                                                        What is the float of Activities
        Float= LS-ES        OR   Float=LF-EF            A, B, C, D and E?



                                                                                           13
   Fast Tracking
    • Doing critical path activities in parallel
   Crashing
    • Adding more resources to complete the activities.
   Reduce scope
   Cut quality
Fast Tracking                 Crashing

   Add risk                      Add cost
   May add project               May add project
    management time                management time


 Reduce scope                 Cut Quality
       Could save cost and       Could save cost
        time                       and resources
       May negatively            May increase risk
        impact customer
        satisfaction
Drop us a note. Your
feedbacks are valuable
        to us!
   Provide PMP, Agile & Scrum training
   Provide face to face and online training of PMI-ACP (Agile
    Certified Practitioner) certification program
   Help Organizations in adapting agile
   Helps organizations in setting up project governing office.
   Get training calendar at www.iZenBridge.com
Saket Bansal
Saket.Bansal@iZenBridge.com
M: 9910802561
Web: www.iZenBridge.com
LinkedIn: www.linkedin.com/in/saketbansal
Keep in touch for
more interesting
  & interactive
 presentations
Presentation by –
      Manish Purwar
    Contact Manish at
 Mobile : +91 9910500922
purwar_manish@yahoo.com

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Critical path analysis for pmp exam

  • 2. How to create Network diagram?  How to find out Critical Path?  Finding out float of an activity  Schedule compression techniques
  • 3. Understanding of critical path analysis & schedule compression techniques  Will help in managing projects better in real life  Will help in solving 10 to 15 questions in PMP exam
  • 4. Activity A does not have any dependencies on other activities.  Activity B, can only be started once A is complete.  Activity C, can be started once B is complete.  Activity D can be started once A is complete.  Activity E can be started once C & D are complete.  Network diagram helps in visualizing the relative order and dependencies of these activities on each other.
  • 5. Precedence Diagramming Method (PDM) or Activity on Node (AON) • Network diagram shows dependencies • In PDM, boxes are used to show activities and arrows to show relationships. • Activities are put in the order they need to be performed • Network diagram is not concerned with when the activities will occur on the project timeline Activity Activity 2 1 End Start Activity 3
  • 6. Mandatory dependencies • Something MUST BE done before something else.  Discretionary dependencies • There is preferred method, or order, of performing the work.  External dependencies • Something outside the project must be done before a task in the project.
  • 7. Finish to Start (FS) : The successor can’t start before the predecessor has finished.  Start to Start (SS) : The successor can’t start before the predecessor has started.  Finish to Finish (FF) : The successor can’t finish before the predecessor has finished.  Start to Finish (SF) : The successor can’t finish before the predecessor has started. It is rarely used.  Finish to Start is most commonly used relationship. Finish to Start Start to Start Finish to Finish Dig a Finish testing Plant tree Start design hole Finish documentation After 2 weeks, start coding
  • 8. 3 weeks 8 weeks 3 6 6 14 B C 3 6 6 14 3 weeks 5 weeks 0 3 14 19 Start A E End 0 3 6 weeks 14 19 3 9 D 8 14 8
  • 9. Longest duration path in a Network Diagram  It is the shortest time to complete the project  It helps to determine the focus for project management efforts  Near critical path is close in duration to critical path  Closer the near critical and critical paths are, the more risk project has
  • 10. 3 weeks 8 weeks 3 6 6 14 B C 3 6 6 14 3 weeks 5 weeks 0 3 14 19 Start A E End 0 3 6 weeks 14 19 3 9 D 8 14 Start, A, B, C, E, End or Start, A, D, E, End 10
  • 11. Total Float (slack) • The amount of time an activity can be delayed with out delaying project end date.  Project Float (slack) • Amount of time project can be delayed with out delaying externally imposed project completion date.  Critical path activities have zero float.  Knowing float helps in better allocation of resources.  If project is behind an imposed external date, then project will have negative float.
  • 12. ES EF Forward Pass Backward LS LF Pass ES : Early Start LS : Late Start Float = LS-ES OR Float = LF-EF EF : Early Finish LF : Late Finish ES and EF are calculated by Forward Pass. LS and LF are calculated by Backward Pass. 12
  • 13. 3 6 6 14 B C 3 weeks 8 3 6 6 weeks 14 0 3 14 A E 19 Start 3 weeks 5 weeks End 0 3 14 19 3 9 D 6 weeks 8 14 What is the float of Activities Float= LS-ES OR Float=LF-EF A, B, C, D and E? 13
  • 14. Fast Tracking • Doing critical path activities in parallel  Crashing • Adding more resources to complete the activities.  Reduce scope  Cut quality
  • 15. Fast Tracking Crashing  Add risk  Add cost  May add project  May add project management time management time Reduce scope Cut Quality  Could save cost and  Could save cost time and resources  May negatively  May increase risk impact customer satisfaction
  • 16. Drop us a note. Your feedbacks are valuable to us!
  • 17. Provide PMP, Agile & Scrum training  Provide face to face and online training of PMI-ACP (Agile Certified Practitioner) certification program  Help Organizations in adapting agile  Helps organizations in setting up project governing office.  Get training calendar at www.iZenBridge.com
  • 18. Saket Bansal Saket.Bansal@iZenBridge.com M: 9910802561 Web: www.iZenBridge.com LinkedIn: www.linkedin.com/in/saketbansal
  • 19. Keep in touch for more interesting & interactive presentations
  • 20. Presentation by – Manish Purwar Contact Manish at Mobile : +91 9910500922 purwar_manish@yahoo.com