Question

Roger Ginde is developing a program in supply chain management certification for managers. Ginde has listed a number of activities that must be completed before a training program of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table:

Activity	Immediate Predecessor(s)	Time (Days)
A	------	2
B	------	5
C	------	1
D	B	10
E	A,D	3
F	C	6
G	E,F	8

a) Develop an AON network for this problem.

b) What is the critical path?

c) What is the total project completion time?

d) What is the slack time for each individual activity?

Answer 1

a) First I have prepared Network Diagram in Hand Written Format

the Network Diagram is prepared using Forward and Backward Path Calculation, where all Duration is in Days, Activities have Non Zero Float, can be considered as Near Critical Path or Non Critical Path, here C-F-G and A - E -G both are Non critical Path,

b) From Above Network Diagram, Critical Path is shown with Bold Line and the Critical Path is B-D-E-G, as Activities on this Path have least Float or Zero Float

c) Project Need Minimum 26 Days Time to Finish or Total project completion time = 26 Days

d)

Activity	Duration	Immediate Predecessor	Early Start	Early Finish	Late Start	Late Finish	Total Float/Slack	Free Float
A	2	-	0	2	13	15	2	NA
B	5	-	0	5	0	5	0	NA
C	1	-	0	1	11	12	11	NA
D	10	B	5	15	5	15	0	0(B)
E	3	A,D	15	18	15	18	0	13(A), 0(D)
F	6	C	1	7	12	18	11	0 ( C)
G	8	E,F	18	26	18	26	0	0 (E), 11(F)