Question

Draw the following network,

1. Draw the precedence Network for the following project
2. Find ES, EF, LS, LF, TF and FF for each activity.
3. Which activities in the project are on the critical path

Activity	Duration	IPA	Type of relationship	Lag
A	4
B	3
C	8	A
D	7	A, B
E	6	D	SS	3
F	3	D
G	5	F	SS FF	2

Note: If the relationship type is not mentioned, it is FS. If no lag/lead is mentioned, it is zero.

Answer 1

a). The precedence network or the A-O-N diagram for the project is drawn. (Image 2; see the legend ).

b).ES, EF, LS, LF, TF and FF for each activity is found (see the legend to understand it clearly ).

All the critical path calculations are tabulated.

Free float,FF = ES of successor activity - EF of current activity.

Total float, TF = LF - EF or LS - ES.

c). Critical activities are A, D, F and G.

(Please give a thumbs up ).