Hany Ismail, MSC, PMP The 80 20 Rule in Projects Planning and Scheduling Posted by Hany Ismail, MSC, PMP Categories Project Management Comments 1 comment January 9, 2019 1 The 80 20 Rule which also known as Pareto principle say that 80% of the effect came from 20% of the causes, Pareto principle. This concept looks very interesting if you study it in more details in Construction Projects Planning and … Read More