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Apply Skills in ProjectIntegration

Network Diagrams

Activity on Node

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Network Diagrams

The sequence of activities can berepresented in the form of a network

Network diagrams first represent theorder that tasks MUST be completed

They can later be modified to

represent how the tasks are actuallygoing to be completed

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Activity-on-Node AON

This is the form of Network diagrams mostcommonly used

Tasks and Milestones are represented as abox called a node

Each activity has a unique name

AON Diagrams

TASK A

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Order & relationships are shown as arrows

Any activity may either:Succeed (follow) task B succeeds task A

Precede (go before)

task A precedes task B

AON Diagrams

TASK A TASK B

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Any activity may:

Be performed concurrently Task C can beperformed at the same time as Task D

AON Diagrams

TASK D TASK E

TASK C

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Activity names should indicate the workto be done and should have a verb & anoun.

AON Diagrams Rules

Tax ReturnPrepare Tax

Return

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Arrows should always go forward

AON Diagrams Rules

TASK D TASK E

TASK C

TASK D TASK E

TASK C

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Arrows should only go from one node toanother node

AON Diagrams Rules

TASK D TASK E

TASK C

TASK D TASK E

TASK C

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Avoid overlapping arrows

AON Diagrams Rules

TASK D TASK E

TASK C

TASK D TASK E

TASK C

TASK D

TASK F

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If overlapping can not be avoided usebridges

AON Diagrams Rules

TASK D TASK E

TASK C

TASK D

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An AON diagram should not containmore than 50 nodes

For large projects break the project intosubprojects to make it easier to manage

AON Diagrams Rules

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Preparing AON

When developing your AON you mustconsider

Given where we are in the project, whatactivity(s) should be performed nextWhich activity(s) would have to befinished before this one can start

Other considerations such as technicalrestrictions, policy or procedurerestrictions or resource restrictions

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Preparing AON

Using the WBS identify the order thattasks must be done (not could be)

Prepare you AON on scrap paper

Check your diagram

Revise your diagram to removeoverlapping arrows

Check your diagramRevise your diagram to reflect resourcerestrictions and preferable task order

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AON Example -Publish Newsletter

Start

NewsletterProject

SelectDesigner

SubmitDesigns

Get ArticleIdeas

Gain ArticleIdeas

Approval

Complete1st Draft

ReviewArticles

Do FinalDrafts

FormulatePhoto

Ideas

GainPhotoIdeaApproval

TakePhotos

ArticlesApproved

PhotosReady

DesignApproved

Complete

LayoutComputer

Start

NewsletterProject

FinishNewsletter

Project

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