PRJ566 Project Planning and Management Work Breakdown Structure 1.
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Transcript of PRJ566 Project Planning and Management Work Breakdown Structure 1.
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PRJ566 Project Planning and ManagementWork Breakdown Structure
1
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Agenda
Work Breakdown Structure—What is it? Defining Activities (Summary Tasks) Defining Tasks More Examples
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Work Breakdown Structure It is a hierarchical description of the work that
must be done to complete the project It defines all of the activities that must be
carried out in order to complete the project Each activity has a number of tasks needed to
be done in order to complete it
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WBS Extract
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Agenda
Work Breakdown Structure—What is it? Defining Activities (Summary Tasks) Defining Tasks More Examples
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Defining Activities How to define Activities (Summary Tasks):
There are various methods used: Top Down Bottom Up
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Defining Activities Top Down
Start at a goal (activity) level and break down the work to lower levels (tasks). An activity may involve many steps (tasks) and many people (resources) being assigned to that one activity. It is important to break down to the lowest level task so that only one resource is assigned to that task.
Once you are down to the lowest level task you can sequence the tasks so that some can be done in parallel. This will allow you to save time on the overall project.
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Defining Activities Bottom Up
More like a brain-storming session. Not very organized. Start with the goal and as a large group identify the tasks
needed to be completed. Tasks are written down. When no more task suggestions
are made then the group tries to organize the tasks into like groupings.
Very inefficient.
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Defining Activities We will use: Top Down
We will start with activities or summary tasks such as use cases, database creation, and so on, and break these into tasks
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WBS Extract
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Agenda
Where are we? Work Breakdown Structure—What is it? Defining Activities (Summary Tasks) Defining Tasks More Examples
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Defining Tasks Once you have decided on your activities
(summary tasks), you need to define the sub tasks needed for each activity.
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Defining TasksEach task in your WBS must meet the following six
criteria:1. Status/Completion is measurable
For your plan, make tasks small enough so you can use a binary measure: done or not done
2. Start/End clearly defined
3. Task has a deliverable Makes it easier to track; gives it validity
4. Time/Cost easily estimated Smaller tasks are easier to estimate
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Defining TasksTask Criteria Continued:5. Duration is within acceptable limits
Shorter tasks are easier to manage (problems become apparent very quickly)
Tasks must be less than 10 hours
6. Tasks are independent One person per task (except for meetings)
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Defining Tasks Keep refining your task hierarchies until you are
satisfied that you have covered all of the work that needs to be done in order to get your project completed
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Agenda
Where are we? Work Breakdown Structure—What is it? Defining Summary Tasks Defining Tasks More Examples
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Build Dog House - Activities
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Build Dog House
Activities and Tasks
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Paint Room - Activities
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Paint Room Activities and Tasks
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A Small System - Activities
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A Small System Activities and Tasks
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A Small System
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Example You have decided to relocate to a new apartment on
November1st. Identify the activities and tasks that are necessary to complete this move. 1. Identify activities (summary tasks)2. Identify tasks within activities
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Example Identify the tasks that need to be done to do
requirements gathering. Do not consider doing Business Use Case Diagrams or Business Use Case Descriptions.