Planning and Scheduling - Bar Chart

7/24/2019 Planning and Scheduling - Bar Chart

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Planning and SchedulingDr. Ir. HM. Agung Wibowo, MM, MSc

Jati Utomo Dwi Hatmoko, ST, MM, MSc, PhD


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Definition(Collins English Dictionary)

A detailed scheme, method, etc. for

attaining an objective.

A proposed usually tentative idea for doingsomething.

A diagram or list showing work to be done,

with associated times.


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Planning

Planning is thus a general term

which is used to encompass the

ideas which are commonly refferedto as programming, scheduling and

organising.


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The Aim of Planning

Its aim can be defined to be makingsure that all work required tocomplete a project gets done :

-In the correct order ;

-In the right place ;-At the right time ;

-By the right people and

equipment ;

-To the right quality ;

-In the most economical, safe and

environmentally acceptable

manner.


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The who of planning

Client

Contractor

Principal Consultant


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Constraint of planning

Budget Consideration

Type of Project

Resources Consideration


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Planning and Control Cycle

Plan work

Correlation

information Monitor

Work

Control

External information

(production rates,

Head Office

constraints etc.)


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Techniques of Scheduling

List of Activities

Bar chart / Gantt Chart

Critical Path Method (CPM)

Precedence Diagram Network (PDM)

PERT (Programme Evaluation & ReviewTechnique)

Line of Balance Method

Time Chainage Diagram (Mass HaulDiagram)


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Copyright 2006 John Wiley& Sons, Inc. 9-9

Project Scope

Scope statement a document that provides an understanding,

justification, and expected result of a project

Statement of workwritten description of objectives of a project

Work breakdown structure

breaks down a project into components,subcomponents, activities, and tasks


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Work Breakdown Structure for Computer

Order Processing System Project


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Organizational Breakdown Structure a chart that shows which organizational units are responsible for

work items

Responsibility Assignment Matrix shows who is responsible for work in a project


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What activities needed todo this work?

Excavate base

Blind base

Formwork

Reinforcement Concrete


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Project Scheduling

Steps

Define activities

Sequence activities

Estimate time /duration

Develop schedule

Excavate base

Blind base

Formwork

Reinforcement

Concrete

(4d)

(2d)

(5d)

(4d)

(1d)


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Bar Chart

A bar chart shows the activities of a project andhow they are scheduled in time, by using lines orbars in proportional in length to the scheduledduration for the activity.Provides visual display of project scheduleGantt Chart / Bar ChartLinked Bar ChartResource Bar Chart


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ACTIVITYTIME (weeks)

Week 1 Week 2 Week 3

Excavate base (4d)

Blind base (2d)

Formwork (5d)

Reinforcement (4d)

Concrete (1d)

BAR CHART (Gantt Chart)


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| | | | |Activity

Design houseand obtainfinancing

Lay foundation

Order andreceivematerials

Build house

Select paint

Select carpet

Finish work

0 2 4 6 8 10Month

Month1 3 5 7 9

Example of Gantt Chart


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Gantt Chart(Mawdesley, 1997)

Advantages ?Disadvantages ?


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Bar Chart

Advantages & Disadvantages

Advantages :

1. Simple

2. Easy to make

3. Easy to understand, as it provides visual display of project

schedule

Disadvantages :

1. No clear links between activities

2. If delays occur, the impact on the project is not clear


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Linked Bar Chart(Mawdesley, 1997)


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Resource Bar Chart (Mawdesley, 1997)


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Check the plan(Mawdesley, 1997)

A plan should be checked for:

Completeness

The sequence of the work

The timing of the work

The financial implications

The use of resources

The quality, safety and environmental

implications


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Activity Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 Month 7 Month 8 Month 9 Month 10

1.

2.

3.

4.

5.

Make a simple project schedule using barchart

Use only 5 activities

(Work in groups of two)

1. Define the scope of the project

2. Make a list of activities3. Put the activities in order

4. Define the durations of the activities

5. Define when the activities starts


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Steps of making a bar chart

1. Define the scope of the project

2. Make a list of activities

3. Put the activities in order

4. Define the durations of the activities

5. Define when the activities starts


1. Foundation

2. Wall

3. Windows & Doors

4. Roof

5. Finishing (tiles, painting

walls, etc)


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1. Foundation

2. Wall

3. Windows & Doors

4. Roof

5. Finishing (tiles, painting

walls, etc)

predecessor successor

foundation wall

Linking activities in the project

Finish to Start (FS)


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Network

A network is a diagram showing allactivites which are needed to complete aproject and the order which they must

be done.It therefore comprises two parts :

The activities

Some method of displaying thetechnological logic of construction.


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Network (Mawdesley, 1997)

Documents

Planning and Scheduling - Bar Chart