2 Plan Schedule Management is the process of establishing the policies, procedures, and documentation for planning, developing, managing, executing, and controlling the project schedule. The key benefit of this process is that it provides guidance and direction on how the project schedule will be managed throughout the project.
3 Analytical Techniques The Plan Schedule Management process may involve choosing strategic options to estimate and schedule the project such as: scheduling methodology, scheduling tools and techniques, estimating approaches, formats, and project management software.
4 Meetings Project teams may hold planning meetings to develop the schedule management plan. Participants at these meetings may include the project manager, the project sponsor, selected project team members, selected stakeholders, anyone with responsibility for schedule planning or execution, and others as needed.
5 Schedule Management Plan As Output A component of the project management plan that establishes the criteria and the activities for developing, monitoring, and controlling the schedule. The schedule management plan may be formal or informal, highly detailed or broadly framed, based upon the needs of the project, and includes appropriate control thresholds.
6 Define Activity Identifying the specific schedule activities that need to be performed to produce the various project deliverables. Define Activity involves developing a more detailed WBS and supporting explanations to understand all the work to be done so you can develop realistic cost and duration estimates
7 Rolling wave planning Rolling wave planning is an iterative planning technique in which the work to be accomplished in the near term is planned in detail, while the work in the future is planned at a higher level. It is a form of progressive elaboration. Therefore, work can exist at various levels of detail depending on where it is in the project life cycle. During early strategic planning, when information is less defined, work packages may be decomposed to the known level of detail.
8 Activity Lists and Attributes An activity list is a tabulation of activities to be included on a project schedule Activity attributes provide more information such as predecessors, successors, logical relationships, leads and lags, and so on.
11 Milestones A milestone is a significant event that normally has no duration. It often takes several activities and a lot of work to complete a milestone. They're useful tools for setting schedule goals and monitoring progress.
12 Sequence Activity Identifying and documenting dependencies among schedule activities. Involves reviewing activities and determining dependencies. A dependency or relationship is the sequencing of project activities or tasks You must determine dependencies in order to use critical path analysis
13 Three types of Dependencies Mandatory dependencies inherent in the nature of the work being performed on a project, sometimes referred to as hard logic. Discretionary dependencies defined by the project team, sometimes referred to as soft logic and should be used with care since they may limit later scheduling options. External dependencies: involve relationships between project and non project activities
14 Task Dependency Types The precedence diagramming method (PDM) is a technique used for constructing a schedule model in which activities are represented by nodes and are graphically linked by one or more logical relationships to show the sequence in which the activities are to be performed. Activity on node (AON) is one method of representing a precedence diagram.
16 PDM Network Diagram Template A project schedule network diagram is a graphical representation of the logical relationships, also referred to as dependencies, among the project schedule activities.
18 Estimate Activity Resource Estimating the type and quantities of resources required to perform each schedule activity. Consider important issues in estimating resources How difficult will it be to do specific activities on this project? What is the organization s history in doing similar activities? Are the required resources available? Estimating the type and quantities of resources required to perform each schedule activity
19 Estimate Activity Duration Published Estimating Data Several organizations routinely publish updated production rates and unit costs of resources for an extensive array of labor trades, material, and equipment for different countries and geographical locations within countries.
20 Alternative Analysis Many schedule activities have alternative methods of accomplishment. They include using various levels of resource capability or skills, different size or type of machines, different tools (hand versus automated), and make rent or buy decisions regarding the resource.
21 Bottom Up Estimating Bottom up estimating is a method of estimating project duration or cost by aggregating the estimates of the lower level components of the WBS. When an activity cannot be estimated with a reasonable degree of confidence, the work within the activity is decomposed into more detail. The resource needs are estimated. These estimates are then aggregated into a total quantity for each of the activity s resources.
23 Activity Resource Requirements Activity resource requirements identify the types and quantities of resources required for each activity in a work package. These requirements then can be aggregated to determine the estimated resources for each work package and each work period.
25 Resource Breakdown Structure The resource breakdown structure is a hierarchical representation of resources by category and type. Examples of resource categories include labor, material, equipment, and supplies. Resource types may include the skill level, grade level, or other information as appropriate to the project.
27 Estimate Activity Resources Related Table
28 Estimate Activity Duration Estimating the number of work periods that will be needed to complete individual schedule activities. Duration includes the actual amount of time worked on an activity plus elapsed time Effort is the number of workdays or work hours required to complete a task
29 Analogous Estimates(Top down) Analogous estimating is a technique for estimating the duration or cost of an activity or a project using historical data from a similar activity or project. Analogous estimating uses parameters from a previous, similar project, such as duration, budget, size, weight, and complexity, as the basis for estimating the same parameter or measure for a future project.
30 Analogous estimating is generally less costly and less time consuming than other techniques, but it is also less accurate. Analogous duration estimates can be applied to a total project or to segments of a project and may be used in conjunction with other estimating methods.
31 Parametric Estimate Parametric estimating is an estimating technique in which an algorithm is used to calculate cost or duration based on historical data and project parameters. Parametric estimating uses a statistical relationship between historical data and other variables (e.g., square footage in construction) to calculate an estimate for activity parameters, such as cost, budget, and duration.
32 For example, if the assigned resource is capable of installing 25 meters of cable per hour, the duration required to install 1,000 meters is 40 hours. (1,000 meters divided by 25 meters per hour).
33 Three Point Estimates (PERT analysis) The accuracy of single point activity duration estimates may be improved by considering estimation uncertainty and risk. This concept originated with the program evaluation and review technique (PERT). P = Pessimistic, M Most Likely, 0 =Optimistic
35 Reserve Analysis Duration estimates may include contingency reserves, sometimes referred to as time reserves or buffers, into the project schedule to account for schedule uncertainty. Contingency reserves are the estimated duration within the schedule baseline, which is allocated for identified risks that are accepted and for which contingent or mitigation responses are developed.
36 Contingency reserves are associated with the known unknowns, which may be estimated to account for this unknown amount of rework. Management reserves are intended to address the unknown unknowns that can affect a project.
37 Develop Schedule Analyzing activity sequences, durations, resource requirements, and schedule constraints to create the project schedule. Ultimate goal is to create a realistic project schedule that provides a basis for monitoring project progress for the time dimension of the project Important tools and techniques include Gantt charts, critical path analysis, and critical chain scheduling, and PERT analysis.
38 Critical Path Method (CPM) CPM is a network diagramming technique used to predict total project duration The critical path is the longest path through the network diagram A critical path for a project is the series of activities that determines the earliest possible time by which the project can be completed Critical Path has the least amount of slack or float
39 CPM Determining the Critical Path
40 Notation & Description ES Early start. The earliest time an activity can start. The ES of the first activity in a network diagram is zero. The ES of all other activities is the latest early finish (EF) of any predecessor activities EF Early finish. The earliest time an activity can finish. The EF for the first activity is the same as its duration. For all other activities, EF is the latest EF of all of an activity's predecessor activities plus its duration. LF Late finish. The latest time an activity can finish. The LF for the last activity is the same as its EF time. The LF for any predecessor activity is the earliest LS of any of its successor activities. LS Late start. The latest time an activity can start. The LS for the last activity is its EF minus its duration. The LS for any predecessor activity is its LF minus its duration. DU Duration. The number of work periods required for completion of an activity.
41 Free Float And Total Float Free Float :The amount of time an activity can be delayed without delaying the ES of any activity that immediately follows it is Known as free float. Free Float = ES ( Activity B) EF(Activity A)
42 Total Float is the amount of time an activity can be delayed From its ES without delaying the project finish date. Total Float = LS ES
43 Schedule baseline Vs. Project schedule Project Schedule is a living document, whereas Schedule Baseline is frozen. Project Schedule is the "actual, whereas Schedule Baseline is the plan". Project Schedule is a Project Document, whereas Schedule Baseline is a part of the Project Management Plan. Project Schedule is updated as the project is being executed, whereas Schedule Baseline is revised only as a result of an approved change. Schedule performance is measured by comparing the actual (Project Schedule) vs the baseline (Schedule Baseline). At the beginning of project execution, the Project Schedule is the same as the Schedule Baseline. As work is done on the project, the actual progress is updated on the project schedule. At any given date, the latest version of the actual (project) schedule is referred to as the Project Schedule.
44 Schedule Compression Fast tracking. A schedule compression technique in which activities or phases normally done in sequence are performed in parallel for at least a portion of their duration.
45 Crashing. A technique used to shorten the schedule duration for the least incremental cost by adding resources
46 Resource Leveling A technique in which start and finish dates are adjusted based on resource constraints with the goal of balancing demand for resources with the available supply.
47 Critical Chain method Critical Chain Method, developed by Dr. Eliyahu M. Goldratt (1997), is a schedule network analysis technique that takes account of task dependencies, limited resource availability & buffers. First step in this method is identifying set of activities that results in longest path to project completion which are called critical chains.
48 Resource buffer : is inserted just before critical chain activity where ever a critical resource required. Feeding buffer : Same like project buffer, pooling of activity safety margins in a non critical chain & applying them at the end of those chain
49 Control Schedule Controlling changes to the project schedule Determining the current status of the project schedule Influencing the factors that create schedule changes Determining that the project schedule has changed Managing the actual changes as they occur.
50 Performance Reviews Performance reviews measure, compare, and analyze schedule performance such as actual start and finish dates, percent complete, and remaining duration for work in progress.
Scheduling Glossary Activity. A component of work performed during the course of a project. Activity Attributes. Multiple attributes associated with each schedule activity that can be included within the
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