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Blog: Comparison between ES as 0 Or 1 in Network Diagram

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Blog: Comparison between ES as 0 Or 1 in Network Diagram

Postby indusharma Wed Apr 16, 2014 11:07 am

In the process of creation of Network diagram, several books and reference material talks about various ways to calculate Early Start (ES) for activity node, like some suggest to start ES of the first activity with 0 and others suggest it to start with 1. This tends to create confusion among the students preparing for PMP® certification.
In this blog, we intend to explain the methods, their similarities and differences.


Knowledge Area : Time
Process Group : Planning

Keywords: ES as 0, ES as 1 , Network Diagram, Critical Path, One method, Zero method, EF
Indu Sharma
PMP Trainer
iZenbridge Consultancy Pvt Ltd

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