Question

QUESTION FIVE These activities involved Aeropa Inc, has a contract to develop a guided missile. have been labelled A to H in the table below, which also shows their estimated completion times (in weeks) and immediate predecessors EVENTS AND ACTIVITIES FOR THE DEVELOPMENT OF A GUIDED MISSILE Time Estimated Cost Activit Predecess Estimated (weeks) or 100 B /A 80 160 160 300 80 100 no the following houe information

Do the following
a) draw the pert nert work resulting from the above information
b) draw the Gantt chart from the same information above
c) state the paths in the PERT network and determine the critical path
d) what is the minimum number of weeks the project will take to be complete
d) what is the maximum cost that the project will take to be completed
e) give two advantages and disadvantage of using the Gantt chart as a planning and scheduling tool

Answer 1

a) Network Diagram in Hand written Format:

b)

Gantt Chart
Activity	Activity Duration	Activity Cost in USD	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
A	3	100
B	1	40
C	2	80
D	5	160
E	2	160
F	5	300
G	3	80
H	4	100
	Total Cost in USD	1020

c)

Here Critical Path is ABDFH, as activities on that critical path have zero float, the critical path is shown with bold line,

d)

As, Critical path duration is 18 weeks, thus project will take at minimum 18 weeks to finish

e)

Project cost would be total activity cost here as calculated in above table = USD 1020,

f)

Advantages of Gantt Charts: It can Clearly present project activities, activities durations, Milestones, baseline charts and actual progress with percentage completion It can also present various related subtasks and their scheduling, works on visualization It is highly useful for project status reporting and monitoring purpose During team meeting, Gantt chart is helpful for pursuing project scheduling related discussion Disadvantages of Gantt Chart: Difficult to update and manage the chart, need more attention to manage the things and require more time and efforts to spend Update option is difficult and require more time to consume, Gantt chart could have different difficulty related to complexity of project, and need more training and application from employee side ,