Work Breakdown SchedulesS3

L A R A T O O K E Y

What is a WBS?

7 approachesNoun type:◦ Physical

◦ Functional

Verb type:◦ Design – build – test –

implement

◦ Objectives

Others:◦ Geographical

◦ Business function

◦ Departmental

Why do you need to create one?

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

Does the shape matter?

What steps do you need to take to create a WBS?

Where does one start?

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

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

Class example -HouseUSE RAWLINSONS – DEFINITION OF ELEMENTS / ELEMENTAL ANALYSIS AS A GUIDE

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

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

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

Level 4The next level identifies work packages.

EXAMPLE: STRUCTUREoSite PreparationoClear site of

existing trees

oSubstructureoExcavation

oFoundations

oFloor slabs etc.

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)

◦ 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.

Summary of LODLevel 1◦ Complete project

Level 2◦ Functional purpose

Level 3◦ Key deliverables

Level 4◦ Tasks

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

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.

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

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?