004 hubungan ketergantungan antar aktifitas 2

7/29/2019 004 Hubungan Ketergantungan Antar Aktifitas 2

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Merge Activity

A

A

B

C D

Burst Activity

A B

C

D

Merge & Burst

Activity

A

B

C

D

E

ES

LS

EF

LF

d

Activity Name

ES : Early Start EF : Early Finish

LS : Latest Start LF : Latest Finish

d : Duration

1. Pola hubungan antar aktivitas (Sequencing)

Linier Activity

A B C D

Predecessor Successor

Hubungan Ketergantungan antar Aktivitas


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2. Bentuk Hubungan Antar Aktivitas

Gunakan Lag time untuk

overlap atau delay.

dalam "Finish-to-Start" relationship,

successor tidak bisa mulai sampai

predecessor selesai dilaksanakan

Dalam hubungan "Start-to-Start"

relationship, successor tidak boleh mulai

sampai predecessor mulai

dalam ketergantungan "Finish-to-Finish" ,

successor tidak boleh selesai sampai aktivitas

predecessor selesai.

Gunakan Lead time untuk

menjadualkan kegiatan

lebih awal

S F

FS

1

S F

S F

2

S F

S F

3

4 S F

S F

S F

Lag

Lead

Predecessor

Successor


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Construction Method

Land Clearing

(Cut & Fill)

Original

Land Contour

Piling

Installation

Set Pilecap

Set Sloof

Set 1st Level

Column & Beam

Set 2nd Level

Column & Roof

3. Contoh Real Hubungan ketergantungan antar Aktivitas


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4. Pemodelan LINEAR & CPM (Critical Path Method

MS Project menggabungkan

Pemodelan Linear & CPM

dalam satu model


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C

10

F

5

E

6

D

4

G

6

FINISHSTARTA

5

00

5 5 15

15 19

0

0

5 5 15

B

10

27 31

15 25

15 25

15 21

25 31

25 30

26 31

25 31

25 31

31

31

Total Slack : LF - EF

Task

ES EF

LS LF

Critical Task : ES = LS dan EF = LF

Total Slack : The amount of time

that a task can be delayed without

delaying successors task

5. Perhitungan Durasi Proyek (Forward & Backward Pass Calculation)


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A 3

0 3

1 4

C 4

0 4

0 4

B 5

4 9

4 9

A 3

0 3

1 4

C 4

5 9

5 9

B 5

4 9

4 9

FS+1

C 4

1 5

1 5

B 5

5 10

5 10

SS+1

A 3

0 3

2 5

Calculation of project duration using

Forward & Backward Pass

6. Perhitungan durasi proyek yang menggunakan SS, FS, FF dan Lead/Lag


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Aplikasi MS Project utk Input Hub. Antar Aktivitas

To order tasks, first, second, third,

etc., double-click on a task.

You can manually input

task predecessors

Lead &

Lag

To link a whole range oftasks and order them, select

the range of tasks.

Go to Edit > Link Tasks.

1. Prosedur utk memasukkan hubungan antar aktivitas

1

2

3

4


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2. Check hubungan antar aktivitas melalui Relationship Diagram

Relationship diagram

is a special version

of Network Diagram

While working on a large project, thisgraphic view helps you to focus on one task

and the

tasks to which it is linked.

This view displays the

current task in the

center of the pane

PredecessorsSuccessors

1

2

3


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If a conflict exists, caused by

multiple dependencies or a

combination of dependencies

and constraints , Project will

give you this warning.

3. Peringatan bila terjadi Conflict akibat pola hubungan antar aktivitas


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Change the conditions that make the successor task dates fixed

Remove the relationship definition so that a successor relationship to the task in the

message no longer exist

Change the conditions governing the finish date for the predecessor (the task named in

the late date message) so that you can schedule the task to finish by the late date.

1

3

2

4. Tips bila terjadi Activity Dependency Conflict


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Identifying the Critical Path.

Crashing the Schedule :

Review with an intent to reduce task duration that are unnecessary

long

Examine the predecessor and successor relationships and try to identifythe relationship that can change from Finish to Start to one of the

overlapping relationship (SS,FF, Lead-Lag schedule)

Increase Resource Assignment for task that are not fix-duration

tasks.

1

a

b

c

2

dSchedule Overtime to reduce the number of regular work hours that a

task may take

5. Tips bila Total Durasi Proyek lebih panjang dari yang direncanakan


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6. Melihat Schedule dalam bentuk Calender & Precedence Diagram

Calendar view is useful when

entering a simple project and

reviewing what needs to be done

on a specific day


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The Network Diagram

view displays the

general flow of work

and the relationships

between the tasks of

your project

Specify how large or

small you would like to

view the diagram.

Precedence diagram Method (PDM)


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Go to the

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004 hubungan ketergantungan antar aktifitas 2

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