A diagramming technique to visualize the dependencies of the activities and calculate the total
duration of the project.
Dependence
• (FS) Finish to Start: The start of the activity thus successor to the completion of the predecessor
activity
• (FF) Final Final: The completion of the successor activity depends upon the completion of the
predecessor activity.
• (SS) Star to Start The initiation of the successor activity depends upon the initiation of the
predecessor activity.
• (SF) Start to Finish: The completion of the successor activity depends upon the initiation of the
predecessor activity.
Characteristics:
Each activity is represented by a box and only one
Each frame has a number of unique activities
The activities are arranged in the order of the presidency to know when you start first
You can start an activity to finish the preceding
There may be concurrent activities
Concepts
• Predecessor Activity: Activity that precedes the successor activity
• successor Activity: Activity happens predecessor activities
• Critical Path: Path or going from start to finish and also takes longer compared
to other routes
• Full Clearance: The additional time available to complete an activity, if all the
above activities as early as possible and start the following latest
• free float; Is the additional time that may extend an activity without affecting the
next start of any subsequent activity
the critical chain is the sequence of precedences and dependent on resources that prevent a project,
which is given limited resources, can be completed in less time terminal elements . If the resources
of a project were always available in unlimited quantities , then the critical chain of a project would
be equal to its critical path.
Steps
Define the project and prepare
the work breakdown structure
Development of relations between
activities
Draw the network connecting all
activities
Calculate the time of the longest path
Using the network to help plan your
schedule, you supervise and control the
project