Question

13.10 An imaging lab is launching a project to relocate to a newly constructed space, which will require relocation of numerous workstations as well as six imaging cameras. Table EX 13.10 displays the duration (in weeks) and precedence relationships among this project's activities.

a. Construct an activity on node network for this project.

b. Determine the critical path and the project completion time.

c. Calculate ES, LS, EF, LF, and slack time for each activity.

Table EX 13.10

Activity	Description	Duration	Predecessor
A	Prep new space for equipment	1
B	Assess relocation of existing telephones and need for new numbers	2	A
C	Identify printer locations and routing order with RIS/IT	8	A
D	Assess existing office workstation furniture	1	B
E	Order new furniture based on assessment	10	C,D
F	Relocate office workstations	1	E
G	Relocate computers	1	F
H	Relocate telephones	1	F
I	Complete staged move of imaging equipment	3	A

Answer 1

Answer a:

Answer b:

Paths	duration
ABDEFG	16
ABDEFH	16
ACEFG	21
ACEFH	21
AI	4

ACEFG and ACEFH are critical paths with longest duration

Answer c:

Activities	Duration	ES, Early start=Max of early finish of last activities	EF, Early finish = early start + duration	LF, Late finish= Min of late start of after activities	LS, Late start= late finish - duration	Slack= LF-EF, Slack is 0 for critical activity
A	1	0	1	1	0	0
B	2	1	3	8	6	5
C	8	1	9	9	1	0
D	1	3	4	9	8	5
E	10	9	19	19	9	0
F	1	19	20	20	19	0
G	1	20	21	21	20	0
H	1	20	21	21	20	0
I	3	1	4	21	18	17