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Scheduling Projects Chapter 7 Contemporary Project Management Kloppenborg © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Chapter Vignette Challenges to creating and managing implementation schedules • Gaps in communicating project objectives, timelines, and measures of success • Populating the central repository with adequate quality content 1. Harvest, prepare, and load whatever content is readily available for quick deployment and usage. 2. Define complete content requirements prior to initial launch. © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Chapter Vignette Challenges to creating and managing implementation schedules • Establish a scope that can be completed in four to eight weeks • Delivering real business benefits in the shortest possible timeframe continues to drive our scheduling approach. © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Introduction to Project Time Management • Planning for time is iterative • The building blocks of a project schedule are activities Activity – “a component of work performed during the course of a project.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. At the end of this chapter… • Describe project schedule limitations and how to deal with them • Describe potential problems in estimating time accurately and how to overcome them • Use the activity on node (AON) method to develop a project schedule. • Identify the critical path using prescribed methods • Depict a project schedule © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Characteristics of Activities • • • • Clear starting and ending points Tangible output that can be verified Scope small enough to understand and control Labor, other costs, and schedule can be estimated and controlled • Single person accountability Prepare budget Build frame Format VERB NOUN Test code © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Project time management processes* 1. 2. 3. 4. 5. 6. Define activities Sequence activities Estimate activity resources Estimate activity durations Develop schedule Control schedule * Adapted from PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Purposes of a Project Schedule When will the project be complete? What is the earliest a particular activity can start, and when will it end? What activity must begin before which other activities can take place? © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Purposes of a Project Schedule What would happen if a delivery of material was one week late? Can a key worker take a week vacation the first week of March? If one worker is assigned to do two activities, which one must go first? How many hours do we need from each worker next week or month? © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Purposes of a Project Schedule Which worker or other resource is a bottleneck, limiting the speed of our project? What will the impact be if the client wants to add another module? If I am willing to spend an extra $10,000, how much faster can the project be completed? Are all of the activities completed that should be by now? © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Historical Development of Project Schedules • Scheduling as a result of competition • Program Evaluation and Review Technique (PERT) and Critical Path Method (CPM) – 1950s – Identify activities – Determine their logical order – Estimate the duration of each activity Critical Path Method (CPM) – “a schedule network analysis technique… and to determine the minimum total project duration.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. PERT • Developed in the Navy’s Special Program Office • Used in developing the Polaris Weapons System • Estimate most likely time needed to complete a project • Estimate level of confidence in completing a project in a particular time • Useful in research and development (R&D) projects © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. CPM • Developed in Engineering Services Division of the Du Pont Company • Used to plan very large projects • Used single time estimates for each activity • Focus on longest sequence of activities • Used to determine how to complete a project early • Useful in the construction industry © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Activity on Node (AON) or Precedence Diagramming Method (PDM) • Work activities are represented by a node and arrows connect activities representing the work of the event • Most widely used Precedence Diagramming Method (PDM) – “a schedule network diagramming technique in which the scheduled activities are represented by May boxes or nodes...” PMBOK® © 2012 Cengage Learning. All Rights Reserved. not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Guide Modern Development of Project Schedules • Computers have enhanced scheduling capability • Resource limitations are a major determinant of project schedules © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 5 Factors Limit Project Completion • Logical order in which activities need to be completed • How long each activity will take • How many key resources are available at specific points in the project • Imposed dates • Cash flow © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Creation of Project Schedules • • • • • Identify all activities Determine logical order in a network diagram Assign resources to each activity Estimate time required for that activity Compare emerging schedule with imposed dates • Consider project budget and cash flow, quality demands, and risk factors © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. The Project Manager’s Responsibility • Resist pressure to dictate a schedule • Determine a schedule that is possible • Persuade stakeholders that the schedule makes sense • Deliver the project according to the agreed-upon schedule © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Define Activities • WBS with deliverables only “What work activities must be completed to create each of the project deliverables?” © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Define Activities • Do not omit any activities • Activity sequencing may uncover missing activities • The schedule will not be approved until all related planning is in place • Adding activities after the final schedule is approved add time and money to the project • Use previous projects, templates, or checklists as a starting point © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. List Project Milestones • • • • Completion of a major deliverable Completion of a critical activity Prior to a large financial commitment Merging point in the project schedule © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. WBS with Milestone List Milestone • Sequence Activities What activity or activities can be started right away and do not depend on any others? What activity or activities can we start now? Predecessor activity – “the scheduled activity that determines when the logical successor activity can begin or end.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Sequence Activities • The following activity is called a successor activity • Place a successor activity after its predecessor • Draw an arrow to show the relationship • Continue until all activities have been placed on the work surface • Dependencies can be mandatory or discretionary Successor activity – “the schedule activity that follows a predecessor activity, as determined by their logical © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to arelationship.” publicly accessible website, in whole or in part. PMBOK® Guide Activity List for Product Upgrade Project Determine product features Acquire prototype materials Produce prototype Design marketing campaign Design graphics Conduct marketing Perform sales calls © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Network for Product Upgrade Project © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Leads and Lags • The most common type of logical dependency is finish-to-start (FS) • Leads are helpful if a project needs to be completed quickly Finish-to-start – “the logical relationship where initiation of work of the successor activity depends on completion of work of the predecessor activity.” PMBOK® Guide Lead – “a modification of a logical relationship that allows an acceleration of the successor activity.” PMBOK® Guide Lag – “a modification of a logical relationship that directs a delay the successor activity.” © 2012 Cengagein Learning. All Rights Reserved. May not be PMBOK® scanned, copied orGuide duplicated, or posted to a publicly accessible website, in whole or in part. Finish-to-Finish Relationships • The graphics could be designed while the marketing campaign is being designed, but not completed until the marketing campaign is completed. Finish-to-finish – “the logical relationship where completion of work of the successor activity cannot finish until the completion of work of the predecessor activity.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Start-to-start Relationships • The graphics design could not start until the design marketing campaign started Start-to-start – “the logical relationship where initiation of the successor schedule activity depends on the initiation of the predecessor schedule activity.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Start-to-finish Relationships • The least used relationship • Example – a project to replace an old system where the new capability must be started before the old one is completely discontinued Start-to-finish – “the logical relationship where completion of the successor schedule activity is dependent on the initiation of the predecessor schedule activity.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Estimate Activity Duration • Evaluate each activity independently • Document all assumptions and constraints • Changing assumptions and constraints could change estimates Duration – “the total number of work periods (not including holidays or other non-work time) required to complete a schedule activity.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Estimate Activity Duration • Identify the output that will be created • Identify the skill level required to perform the work • Disregard predetermined completion points • When using a past project as a guide, use actual time not initial estimates for activities • Keep time estimates in the same unit of measure © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Activity Duration Estimate Example © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Suggestions for Creating Realistic Time Estimates 1. Verify all time estimations with the people doing the work 2. Estimate times of completion of work without initial reference to a calendar 3. Make sure all time units are identical: working days, work week, months (consider time off for company holidays) © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Suggestions for Creating Realistic Time Estimates 4. Consider time constraints Unexpected meetings Learning curves Inaccuracy in work instructions Vacation Interruptions Emergencies /illness Rework Resources or information not available on time © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Suggestions for Creating Realistic Time Estimates 5. Acknowledge tendency toward optimistic or pessimistic estimations 6. First establish a realistic estimate 7. Adjust estimates based on size, familiarity, and complexity differences © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Activity Duration Estimating Problems and Remedies Learning Curves • The more times a person performs an activity, the better and faster he or she becomes • Rate of improvement can be studied and predicted • The rate of improvement varies depending on: how much the culture of the organization stresses continual improvement how complex that activity is how much of the activity is dependent on the worker versus how much skill is dictated by the pace of involved in the activity a machine © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Learning Curves • Time necessary to perform an activity is calculated based upon a rate of improvement • Time estimates are found in learning curve tables • Rapid learning leads to faster performance times • PMs should plan for the amount of learning that takes place • PMs should create and sustain an environment that encourages and expects rapid learning © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Learning Curve Table © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Develop Project Schedules • Identify the critical path – Determines the earliest possible end date of the project – Most critical in terms of time – Methods for determining the critical path Two-pass method Enumeration method Critical path – “…the sequence of activities that determines the duration of the project…the longest path through the © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted PMBOK® Guide toproject.” a publicly accessible website, in whole or in part. Two-Pass Method • Used to determine the amount of slack each activity has • Make two logical passes through the constructed network – The forward pass – The backward pass Forward pass – “the calculation of the early start and early finish dates for the uncompleted portions of all network activities.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Two-Pass Example Schedule Set Up Start at the beginning of the project and ask how soon each © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted activity can begin and end to a publicly accessible website, in whole or in part. Times Important to Each Activity • Displayed in the four corners of each block Early start date (EF) – “the earliest possible point in time on which uncompleted portions of a schedule activity can start…” PMBOK® Guide Early finish date (ES) – “the earliest possible point in time on which uncompleted portions of a schedule activity can finish…” PMBOK® Guide Late start date (EF) – “the latest possible point in time that a schedule activity may begin…” PMBOK® Guide Late finish date (ES) – “the latest possible point in time that a schedule activity may be completed…” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Schedule Example First Pass Complete © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Second or Backward Pass • How late can each activity be finished and started? Backward pass – “the calculation of late finish dates and late start dates for the uncompleted portions of all schedule activities.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Schedule Example Second Pass Complete © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Float and the Critical Path • Compute the critical path based on float (slack) • Activities with no float or very little float need to be scheduled very carefully • Float = Late Start – Early Start (Float = LS – ES) • Critical path is the sequence of activities that have no float Total float – “the total amount of time a schedule activity may be delayed from its early start date without delaying the project finish date.” PMBOK® Guide Free float – “the amount of time a schedule activity can be delayed without delaying the early start of any immediately © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted schedule activities” to a following publicly accessible website, in whole or in part. PMBOK® Guide Two-Pass Complete Schedule Example © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Enumeration Method • List (enumerate) all paths through the network • All paths are identified and timed if the team needs to compress the schedule © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Enumeration Method © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Uncertainty in Project Schedules • Construct the best possible schedule • Manage the project very closely OR • Estimate a range of possible times each individual activity may take • Examine the impact of each activity on the entire schedule • Use PERT and Monte Carlo for this approach © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Program Evaluation and Review Technique (PERT) • Aid to understanding how variability in the duration of individual activities impacts the entire project schedule • Sequence activities into a network • Create 3 estimates of time to complete each activity Estimated time = – Optimistic – Most likely – Pessimistic Optimistic + 4(Most likely) + Pessimistic 6 © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. PERT Time Estimate Example PERT Considerations • Advantages – Reinforces the degree of uncertainty that exists in project schedules – Calculations indicate that expected time is actually longer than most likely time • Difficulties – Takes more effort to create 3 estimates – No guarantee how good the estimates are – May underestimate the risk of a schedule running long © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Project Managers and PERT • Infrequently used by project managers • PMs may informally use 3 time estimates for key activities • PMs may use Monte Carlo simulation instead © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Monte Carlo Simulation • An entire range of possible time estimates can be used for any activity • Project schedule is calculated many times • Estimate for a particular activity is based on the likelihood of that time as determined by the project manager Monte Carlo Analysis – “a technique that computes, or iterates, the project cost or project schedule many times… to calculate a distribution of possible total projects cost or completion dates.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Monte Carlo Simulation • Computer output includes a distribution of how often the project would be expected to take each possible length of time • Advantages – Flexibility allows more realistic estimates – Extent of information provided © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Monte Carlo Simulation • Disadvantages – Time necessary to estimate activity duration and range of outcomes – Special software and skill required for effective use • PMs decide when this specialized technique is worth the extra effort to the project © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Initiatives to Improve On-Time Schedule Delivery © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Show the Project Schedule on a Gantt Chart • An easier to understand tool for communicating a project schedule • A horizontal bar chart showing each activities early start and finish • Show a bar for each activity stretched over a time line • Units of time are the units used to create the schedule Gantt chart – “a graphic display of schedule related information.” PMBOK® Guide © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Show the Project Schedule on a Gantt Chart © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Show the Project Schedule on a Gantt Chart • Basic Gantt chart does not show critical path, predecessor-successor relationship, or late start and finish dates • Use scheduling software, like MS Project, to display additional features on a Gantt chart © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Using MS Project for Critical Path Schedules • • • • Set up the project schedule Build the Logical Network Diagram Understand the Critical Path Display and print schedules © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Using MS Project for Critical Path Schedules • Limitations to how fast a project can be completed – – – – – Logical order of the activities Duration of each activity Number of key resources available when needed Imposed dates Cash flow • Consider each limitation in order when using MS Project © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Set Up the Project Schedule • Define your organization’s holidays • Turn off change highlighting • Understanding types of project data © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Standard Calendar with Two Holidays (1/3 and 1/17) Plus a Half Day (1/26) and a Working Saturday (1/22) On the Project tab, click Change Working Time. In the For Calendar: box, enter Standard (Project Calendar) if not displayed. Move to the month and year using the scroll bar to the right of the calendar display. Click on the day to change. Click the Exceptions tab, then click an empty row. Enter a description in the Name column. Click another cell in the same row to review the results. Repeat these steps until the organizational holidays are defined. Deleting a row restores the previous definition. Click OK. © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Details Dialog for Half Working Day Select the day, enter a description, and then click Details … Click Working Time and modify the From: and To: values. Click OK twice. Select the day and click Details… Click Nonworking and click OK twice. © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Turn Off Change Highlighting Click the Task tab. On the Format tab, Text Styles, Item to Change, enter Changed Cells. In Background Color, enter White. Click OK. © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Understanding Types of Project Data • Task Data – WBS data and task data © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Understanding Types of Project Data • Resource Data – Describe each resource with information required for control – Used to determine assignment load, work, and cost – Use the resource name field to identify the resource wherever assignment information is displayed © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Understanding Types of Project Data • Assignment Data – Task duration, work values, cost values are calculated at the time of assignment – Calculated when a resource’s work, units, or duration values are changed – View in Task Usage or Resource Usage view © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Build the Logical Network Diagram 1. Enter tasks and milestones 2. Understand task dependencies 3. Define dependencies using a task table and mouse 4. Define or delete a dependency series 5. Understand network diagram presentation 6. Verify the accuracy of the network logic © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1. Enter tasks and milestones 1. Click on the Id field to select the row(s) below where the new row(s) will be. 2. On the Task tab, Insert group, click Insert Task. 3. In the Task Name field, enter the desired name of the added task. 4. Inserted rows assume the summary level of the row above the insert location. © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 2. Understand Task Dependencies • A task dependency definition includes a logical link type and any associated lead/lag value. • Defaults: – Finish-to-start link type – Lead/lag value of zero days • View/create task dependencies graphically in the Network Diagram view and Gantt views © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 3. Define Dependencies using a Task Table and Mouse 1. Click on the Id (task name) field to select the predecessor task row. 2. Press and hold Ctrl while selecting the successor task. 3. On the Task tab, Schedule group, click on Link Tasks. 4. To delete a dependency definition: Task tab-Schedule group-Unlink Tasks © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 4. Define or Delete a Dependence Series 1. Select (by dragging) all of the tasks to be linked in a series. 2. Click – Task tab – Schedule group – Link Tasks 3. To delete links: Click – Task tab – Schedule group – Unlink Tasks © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 5. Understand Network Diagram Presentation • Task tab – View group – click arrow – Network Diagram • File – Print – appropriate settings - Print © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 6. Verify the Accuracy of the Network Diagram 1. 2. 3. 4. 5. 6. Print the Network diagram. Find tasks with no predecessor - Justify Find tasks with no successor - Justify Verify the logic (work flow). Find opportunities parallel or overlap activities Justify/repair gaps in the Critical Path. © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Understand the Critical Path 1. Assign duration estimates 2. Identify the critical path © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 1. Assign Duration Estimates • Use the same unit of time for each task • Assign duration estimates to tasks and milestones only • MS Project calculates the duration for WBS summaries based on durations for tasks within each summary • To assign the duration to a task: – Click Duration cell – Enter duration value – Assign zero duration to create a milestone © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. 2. Identify the Critical Path • • Project marks Critical Path task Gantt bars and Network Diagram task nodes in red Add Critical Path marking to Gantt Chart graphical view – • Click Task – Format – Bar Styles – Critical Tasks – OK Monitor “near” Critical Paths: – Tools – Options – Calculation tab – Adjust the value of the “Tasks are critical if slack is less than or equal to” setting © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Display and Print Schedules with MS Project • Project scheduling software may not be available to all members of the project team • Create an output that can be printed and easily read (.pdf file format) © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Summary • Project schedules are created by listing all activities that will need to be performed (activity definition) • Detail activities to include how the activity will be accomplished, by whom, how long it will take, how much it will cost, and accountability • Determine predecessors and successors to sequence activities (activity sequencing) • Estimate how long each activity will take (activity duration) • Schedule development is an iterative process © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Project Schedule Emphasizing Critical Path Activities PM in Action Example © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part. Project Schedule Emphasizing Critical Path Activities • Top row shows the summary for the entire Project • Intermediate summaries could be collapsed to show more of the project at a glance. • Critical activities are shown in color. • Activities are all connected with arrows showing their predecessor relationships. • Project managers can show or hide as much • detail as their sponsors and other stakeholders wish. PM in Action Example © 2012 Cengage Learning. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible website, in whole or in part.