The presentations telling about Gant Chart and CPM method and Swot analysis with example.

1. GANT CHART and CPM
ALİ UÇAR

2. CONTENT
• What is gant chart?
• Gant chart’s features
• Shortcomings of gant chart
• Example:building an addition house
• What is cpm?
• What is the cpm network?
• Determining the critical path
• Calculating the slack time
• Example:building an addition house
• Critical path
• Swot analysis

3. WHAT IS GANT CHART?
• Horizontal bar devoloped
as a production control
tool in 1917 by Henry L.
Gantt.
• Provides a graphical
illustration of a schedule
that helps to plan.

4. GANT CHART’S FEATURES
• It is comprised of
horizontal and vertical
axis.
• Bars show the starting
and ending time.
• The difference first and
last point gives activity’s
time.

5. SHORTCOMİNGS OF GANT CHART
• Relationship
• Control activities
• Logical connections
• Activities can not be
changed in implementation
period.

6. Example:Building an addition house
Number Activity september October November December January February
1 Taking materials
2
Preparation of the
plot
3
The excavation of the
the foundation
trench
4
Preparation of the
basic structure
5 Cast of concrete
6 Mold works
7 Concrete works
8 Infrastructure works
9
Making of
installations

7. WHAT IS CPM?
• In 1957, CPM was developed
by Kelly and Walker to assist
in building and maintenance
of chemical plants.
• CPM is used to plan the
scheduling of individual
activities that make up a
project.

8. WHAT IS THE CPM NETWORK?
• The arcs represent the
activities.
• Nodes represent the start and
end of the activities.
• An activity carries arrow
symbol.

9. Determining The Critical Path
• Earliest Start Time (ES) = the maximum of the
earliest finish times of all activities immediately
preceding activity i. (This is 0 for an activity with no
predecessors).
• Earliest Finish Time (EF) = (Earliest Start Time) + (Time to
complete activity i.). This represent the earliest time at
which an activity can end.
• Latest Finish Time (LF) = the minimum of the latest start times
beginning at node j. This is the latest time an activity can end
without delaying the entire project.
• Latest Start Time (LS) = (Latest Finish Time) - (Time to complete
activity (i,j)). This is the latest time an activity can begin without
delaying the entire project.

10. Calculating The Slack Time
Slack = (Latest Start) - (Earliest Start),
or
= (Latest Finish) - (Earliest Finish).
• Critical path is consisting with zero slack.

11. Example:Building an addition house
Number Activity Time (Day)
1 (A)Taking materials 10
2 (B)Preparation of the plot 20
3
(C)The excavation of the the
foundation trench
10
4
(D)Preparation of the basic
structure
31
5 (E)Cast of concrete 61
6 (F)Mold works 61
7 (G)Concrete works 61
8 (H)Infrastructure works 62
9 (I)Making of installations 60

12. CPM NETWORK FOR MY EXAMPLE

13. CRITICAL PATH

14. CRITICAL PATH
• B+C+D+F+H=184
• B+C+D+G+I=182
• A+E+F+H=194
• A+E+G+I=192

15. Numbe
r
Activity Time (Day) ES EF LS LF Slack
1
(A)Taking
materials
10
0 10 0 10 0
2
(B)Preparation of
the plot
20
0 20 20 21 1
3
(C)The excavation
of the the
foundation trench
10
20 30 21 32 2
4
(D)Preparation of
the basic
structure
31
30 61 32 65 4
5
(E)Cast of
concrete
61
10 71 10 71 0
6 (F)Mold works 61 61 122 71 132 0
7
(G)Concrete
works
61
61 122 71 135 3
8
(H)Infrastructure
works
62
122 184 132 194 0
9
(I)Making of
installations
60
122 182 135 198 6

16. SWOT ANALYSIS
Strenght & Opportunites
Easy law
Helpfully municipality
Cheap and good workers
Weaknesses & Threats
Long time
Season(winter, snow, weather)
Busy workers
Work accident

17. CONGRATULATION

18. THANK YOU FOR YOUR
ATTENTION