Construct the network who's activity and the relationship Activity:A,D,E can start simultaneously Activity:B,C>A;G,F>D,C;H>E,F

Solution:

Given: A, D, E can start simultaneously.

$\mathrm{A}<\mathrm{B}, \mathrm{C} ; \mathrm{C}, \mathrm{D}<\mathrm{G}, \mathrm{F} ; \mathrm{E}, \mathrm{F}<\mathrm{H}$

Working rule:

A<B, C implies activity A is the immediate predecessor of activities B and C .

i.e., for activities B and C to occur, activity ' A ' has to be completed.

Similarly, for activities $\mathrm{G}, \mathrm{F}$ to occur D and C has to completed for activity H to occur E and F has to be completed.

$\because$ A, D and E are independent events.