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"The process of identifying and documenting relationships among the project activities."
The definition shown above in italics is taken from the Glossary of the Project Management Institute, A Guide to the Project Management Body of Knowledge, (PMBOK® Guide) – Fifth Edition, Project Management Institute Inc., 2013
Project Management Institute, A Guide to the Project Management Body of Knowledge, (PMBOK® Guide) – Fifth Edition, Project Management Institute Inc., 2013 Figure 6-7 Page 153
Defines the logical sequence of work which elicits the best efficiency taking all project constraints into account
Milestones:
Produces a project schedule network diagram
Finish-to-Start (FS) - Activity A must finish before activity B can start.
Example: For a new kitchen installation - when laying tiles we must finish putting the adhesive on the wall before putting the tile on the adhesive
Finish-to-Finish (FF) - Activity A must finish before activity B can finish.
Example: We must put all the tiles on the wall before we can complete putting all the spacers in between.
Start-to-Start (SS) - Activity A must start before activity B can start.
Example: We must start install the base units before we can fit the worktops.
Start-to-Finish (SF) - Activity A must start before activity B can finish.
Example: We have to get the electrician to fit the grounding earth wire to the pipework before the kitchen can be completed
Mandatory
Discretionary
External
Internal
Precedence Diagramming Method
Early Start - "the earliest date that uncompleted activities can be started given the network logic and any schedule constraints&"
Early Finish - "the earliest date that uncompleted activities can be finished"
Late Start - "the latest date that an activity can begin without compromising a specified milestone e.g. project finish date"
Late Finish - "the latest date than an activity can finish without compromising a specified milestone"
The definitions shown above in italics are taken from the Glossary of the Project Management Institute, A Guide to the Project Management Body of Knowledge, (PMBOK® Guide) – Fifth Edition, Project Management Institute Inc., 2013
Total Float - "the time an activity can be delayed from its early start date without delaying the project finish date"
Free Float - "amount of time an activity can be delayed without delaying the early start of any dependent following activity";
Formula to calculate Slack or Total Float:
= Late Finish - Early Finish, or Late Start - Early Start
You are given a Network Diagram showing:
Free Float = ES of B – EF of A
The definitions shown above in italics are taken from the Glossary of the Project Management Institute, A Guide to the Project Management Body of Knowledge, (PMBOK® Guide) – Fifth Edition, Project Management Institute Inc., 2013
You could get 5 questions requiring you to draw a network diagram to be able to answer the question
Note – the same information may be used on different questions!!
Exceptions
GERT (Graphical Evaluation and Review Technique): is a network diagram which allows for conditional branches and loops and multiple project ends (rarely appears in the exam)
Hammock activity: a group of related schedule activities that, for reporting purposes, is shown as a single aggregate activity in a bar chart or graph.
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