03 project time management

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03 project time management

  1. 1. Session 3Project TimeManagement
  2. 2. Agenda  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 2
  3. 3. Goals  By the end of this session, you will be able to:  Have an overview of Project Time Management;  Have a deep understanding of Inputs, T&Ts, and Outputs of 6 processes of Project Time Management;  Find Critical Path, Float, ES, LS, EF, LF.Project Time Management 3
  4. 4. Copyright  Most of the material of this presentation has been taken from the PMBOK® Guide 4th Edition of PMI (Project Management Institute)  The material is for LARION Computing internal use only, NOT for reproduction or distribution.Project Time Management 4
  5. 5. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 5
  6. 6. Project Time Management Overview  03 Project Time Management Overview.pdfProject Time Management 6
  7. 7. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 7
  8. 8. 6 ProcessesProject Time Management 8
  9. 9. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 9
  10. 10. Define Activities (1 of 5)  Scope baseline  Project Scope Statement  WBS  WBS DictionaryProject Time Management 10
  11. 11. Define Activities (2 of 5)  Decomposition  Remember the rule 100%Project Time Management 11
  12. 12. Define Activities (3 of 5)  Rolling wave planning  A form of progressive elaboration planningProject Time Management 12
  13. 13. Define Activities (4 of 5)  Templates  E.g., use “User Login” portion of the previous projectProject Time Management 13
  14. 14. Define Activities (5 of 5)  Milestone list  A list of milestones  A milestone is a significant point or event in the projectProject Time Management 14
  15. 15. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 15
  16. 16. Sequence Activities (1 of 4)  Precedence diagramming method (PDM)  Another name: Activity-on-Node (AON)  4 types of relationships:  Finish to start (FS)  Start to start (SS)  Finish to finish (FF)  Start to finish (SF)  ExampleProject Time Management 16
  17. 17. Sequence Activities (2 of 4)  Dependency determination  Mandatory dependency  Discretionary dependency  External dependencyProject Time Management 17
  18. 18. Sequence Activities (3 of 4)  Leads & Lags  Lead: added to start an activity before the predecessor activity is completed  Lag: inserted waiting time between actvitiesProject Time Management 18
  19. 19. Sequence Activities (4 of 4)  Schedule network diagramsProject Time Management 19
  20. 20. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 20
  21. 21. Estimate Activity Resources (1 of 2)  Resource Calendars  Time period that each project team member can work on the projectProject Time Management 21
  22. 22. Estimate Activity Resources (2 of 2)  Published estimating data  Bottom-up estimatingProject Time Management 22
  23. 23. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 23
  24. 24. Estimate Activity Durations (1 of 4)  Analogous estimating  Based on historical data of previous similar projects/activities  In early phases  When there is a limited amount of information about the projects/activitiesProject Time Management 24
  25. 25. Estimate Activity Durations (2 of 4)  Parametric estimating  Install 25m of cable per hour  1000m ==> 40 hoursProject Time Management 25
  26. 26. Estimate Activity Durations (3 of 4)  Three-point estimating  Most likely (M)  Optimistic (O)  Pessimistic (P)  ExercisesProject Time Management 26
  27. 27. Estimate Activity Durations (4 of 4)  Reserve analysis  Time reserves or buffersProject Time Management 27
  28. 28. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 28
  29. 29. Develop Schedule (1 of 14)  Schedule network analysis  A technique to generate project schedule  May take the form of one or all the following techniques  Critical Path Method  Critical Chain Method  Resource Leveling  What-if Analysis  Schedule CompressionProject Time Management 29
  30. 30. Develop Schedule (2 of 14)  Critical Path Method  Includes determining:  The longest path – Critical Path  Early start (of an activity), ES  Late start, LS  Early finish, EF  Late finish, LF  Critical Path is the longest duration path through a network diagram and determines the shortest time to complete the project  Near-Critical PathsProject Time Management 30
  31. 31. Develop Schedule (3 of 14)  Critical Path Method (cont.)  How to find the critical path?  Find all the paths in the diagram and select the longest  Exercise: Find CPProject Time Management 31
  32. 32. Develop Schedule (4 of 14)  Critical Path Method (cont.)  Exercise: Find CPProject Time Management 32
  33. 33. Develop Schedule (5 of 14)  Critical Path Method (cont.)  Float (Slack)  The amount of time an activity can be delayed without delaying the project end date or an intermediary milestone  How to find float for any activity?  Figure out how much it can slip before it makes the project late  Other formulas  Float = LS – ES = LF – EF  Note:  Activities on CP have a float of zero (0)Project Time Management 33
  34. 34. Develop Schedule (6 of 14)  Critical Path Method (cont.)  Exercise: Find Float for all activitiesProject Time Management 34
  35. 35. Develop Schedule (7 of 14)  Critical Path Method (cont.)  Exercise: Find Float for all activitiesProject Time Management 35
  36. 36. Develop Schedule (8 of 14)  Critical Path Method (cont.)  ES, EF, LS, LF:  ES: the earliest time an activity can start  EF: the earliest time an activity can finish  LS: the latest time an activity can start  LF: the latest time an activity can finish  How to determine ES, EF, LS, LF?  ES, EF:  Forward pass  LS, LF:  Backward passProject Time Management 36
  37. 37. Develop Schedule (9 of 14)  Critical Path Method (cont.)  Exercise: Find ES, EF, LS, LFProject Time Management 37
  38. 38. Develop Schedule (10 of 14)  Critical Path Method (cont.)  So why Critical Path Method?  Uses Critical Path Method to avoid big problemsProject Time Management 38
  39. 39. Develop Schedule (11 of 14)  Critical Chain Method  Modifies the project schedule to account for limited resources  The resource-constrained critical path is called Critical ChainProject Time Management 39
  40. 40. Develop Schedule (12 of 14)  Resource Leveling  To produced resource-limited schedule  What-if Analysis  An analysis of the question “What if the situation presented by scenario A happens?”Project Time Management 40
  41. 41. Develop Schedule (13 of 14)  Schedule Compression  Crashing  Making cost and schedule trade-offs  Compresses the schedule the most for the least incremental cost  Fast tracking  Doing critical path activities in parallel  Often results in rework  Increases risks  Requires more attention to communicationsProject Time Management 41
  42. 42. Develop Schedule (14 of 14)  Project schedule  Milestone chart  Bar chart  Schedule baseline  Approved schedule  Schedule data  Resource histogram (resource requirements by time period)  Alternative schedules  Scheduling of contingency reservesProject Time Management 42
  43. 43. Progress  Project Time Management Overview  6 Processes  Define Activities  Sequence Activities  Estimate Activity Resources  Estimate Activity Durations  Develop Schedule  Control ScheduleProject Time Management 43
  44. 44. Control Schedule  Inputs, T&Ts, Outputs are all things you are already familiar withProject Time Management 44
  45. 45. Recap  Project Time Management  6 processesProject Time Management 45
  46. 46. Questions?Project Time Management 46
  47. 47. Thank you!Project Time Management 47

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