work breakdown schedulescons6401.weebly.com/uploads/4/2/6/3/42631959/s03_wbs.pdf · level 3 the...
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Work Breakdown SchedulesS3
L A R A T O O K E Y
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What is a WBS?
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7 approachesNoun type:◦ Physical
◦ Functional
Verb type:◦ Design – build – test –
implement
◦ Objectives
Others:◦ Geographical
◦ Business function
◦ Departmental
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Why do you need to create one?
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WBS – Basis of Many ThingsActivity Definition
Network scheduling
Resource Planning
Costing – Estimation & Budgeting
Risk analysis & Risk Management Planning
Organizational structure
Control measure
Measurement
Q7503, PRINCIPLES OF PROJECT MANAGEMENT, FALL 2002 6
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Does the shape matter?
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What steps do you need to take to create a WBS?
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Where does one start?
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Scope(definition)
Project Management Processes(Initiation)
Initiation
Cost(estimates, …)
WBS
Time(activity diagrams, …)
Human Resources
Also to consider: Quality, Risk, Communication, Procurement, Integration (PMBOK® knowledge areas)
Project Charter
Project Management Plan
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Scope(definition)
Project Management Processes(Initiation)
Initiation
Cost(estimates, …)
WBS
Time(activity diagrams, …)
Human Resources
Also to consider: Quality, Risk, Communication, Procurement, Integration (PMBOK® knowledge areas)
Project Charter
Project Management Plan
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Class example -HouseUSE RAWLINSONS – DEFINITION OF ELEMENTS / ELEMENTAL ANALYSIS AS A GUIDE
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Level 1This is the highest level where the project (a house) will be summarised. We assume that the design is complete, all permits issued, all materials ordered and inspection will happen.
House Tookey
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Level 2What are the major elements that are needed?◦ Structure; Exterior Fabric; Internal Finishing; Services;
Exterior Work & Sundries; P&G, Margins and Contingencies
House Tookey
StructureExterior Fabric
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Level 3The next level is about major deliverables and milestones for managing the project.
EXAMPLE: STRUCTUREoSite Preparation
oSubstructure
oFrame
oStructural walls
oUpper floors
House Tookey
StructureExterior Fabric
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Level 4The next level identifies work packages.
EXAMPLE: STRUCTUREoSite PreparationoClear site of
existing trees
oSubstructureoExcavation
oFoundations
oFloor slabs etc.
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Work PackagesA work package is the lowest level of the WBS.◦ It is output-oriented in that it:
◦ Defines work (what).
◦ Identifies time to complete a work package (how long).
◦ Identifies a time-phased budget to complete a work package (cost)
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◦ Identifies resources needed to complete a work package (how much).
◦ Identifies a single person responsible for units of work
(who).
◦ Identifies monitoring points (milestones) for measuring success.
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Summary of LODLevel 1◦ Complete project
Level 2◦ Functional purpose
Level 3◦ Key deliverables
Level 4◦ Tasks
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Numbering / CodingFocusing on the green boxes:
1. Project x
1.1 Area 2
1.1.1 Columns
1.1.1.1 Formwork
4 levels of detail (LOD)
maximum requirement for
our course
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The 100% ruleThe 100% rule is one of the most important principlesguiding the development, decomposition and evaluation ofthe WBS.
The 100% Rule states that the WBS includes 100% of the work defined by the project scope and
captures all deliverables.
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Something to noteWBS
1. Comprehensive classification of project scope
2. Contains no activity durations
3. No dependencies are identified
4. No resources are assigned
MS PROJECT
1. Actual work to be done
2. Durations are included
3. Dependencies between activities are created, which defines contract duration
4. Resources are assigned to tasks
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WBS – W5 = basis for control
What has to be done?
Where does it take place?
Who has to do it?
When does it have to be done?
How much will it cost?
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