Forward and Backward pass in Network Diagram, critical path, float/slack time

softtware project management

Forward and Backward pass in Network Diagram is a very discussing topic of Software Project Management.

What is the critical path?

A critical path is a path with the least amount of slack/float time.

What is a float/slack time?

Float/Slack time is the time that an activity can be delayed without delaying the project.

When we complete the project through a critical path, then it is the longest path as compared to other paths. If any activity is late in the critical path, then it delays all the projects. So we need to take care of a critical path.

Early Finish = Early Start + Duration

Late Start = Late Finish – Duration

Float/Slack Time = Late Start – Early Start

ActivityPredecessorDuration
A3
 BA4
 CA2
DB5
EC1
FC2
GD,E4
HF,G3
softtware project management
Figure 1: Predecessor activities and parent activities
Early StartDuration of activity/taskEarly Finish
Activity/Task
Late StartDuration of activity/taskLate Finish

forward pass in project software project management
forward pass in project software project management

 

backward pass in software project management
backward pass in software project management
By:Prof. Fazal Rehman Shamil
CEO @ T4Tutorials
Last Modified: April 21, 2020

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