Question

QUESTION 1

 

The following table provides information about a particular project:

Activity	Duration (Days)	Preceding
		Activity
A	5	_
B	6	_
C	4	A
D	3	A
E	1	A
F	4	E
G	14	D,E
H	12	B,C
I	2	G,H

 

(a)   Represent the project by means of a simple network diagram.        

(b)   Prepare in tabular form, an activity schedule showing the following details: Earliest-start, earliest-finish, latest-start, latest-finish and slack times.         

(c)   Identify the critical path.                                                                            

Answer 1

Activity	Duration (D)	Earliest Starting Time(E)	Earliest Finish Time (E+D)	Latest Finish Time (L)	Latest Starting Time (L-D)	Slack Time (L-D)-E
1-2	5	0	5	5	0	0
1-3	6	0	6	10	4	4
2-3	4	5	9	10	6	1
2-4	3	5	8	8	5	0
2-5	1	5	6	20	19	14
3-6	12	9	21	22	10	1
4-6	14	8	22	22	8	0
5-7	4	6	10	24	20	14
6-7	2	22	24	24	22	0

The slack time for 1-2, 2-4, 4-6, 6-7 is zero

So the critical path is 1-2-4-6-7.