by, CPM BOOK

1. Line Of Balance
Presenter Name: Chothani yash (166250306511)
jadeja satyadeep (166250306518)
Mehta naitik (166250306527)
Rathod jaydeep (166250306546)
Guided By: CIVIL H.O.D. NATHANI SIR
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2. Project management techniques
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Conventional methods Network methods
* Gantt bar chart * CPM-critical path method
* Mile stone chart * PERT- Programme
* Line of balance(LOB) Evaluation and
Review
Technique

3. Intended Learning Outcomes
Define the principles of Line of Balance
Demonstrate the application of LOB
Understand the importance of LOB
Understand the process of applying LOB
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4. Line of Balance (LOB)
• Definition
A simple diagram to show location and time at
which a certain crew will be working on a given
operation.
Focuses on balancing the time taken for
individual activities by either re-distribution of
resource or by reducing process waste.
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5. Line of Balance (LOB)
 LOB is a Planning methodology to optimize
resources used
LOB is a Good Visual tool that lets us see if a
construction program can be achieved with the
minimum waiting time between tasks
It is primarily used on projects that have
repeated elements like Highways, Pipelines,
High-rise buildings, hotel bedrooms, bridge etc.
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6. HISTORY
The LOB scheduling Technique was originated
by the Goodyear Company in the early 1940's
and was developed by the U.S Navy in the early
1950's for the programming and control of
both repetitive projects.
LOB has been applied to resource scheduling
and co-ordination of subcontractors, to a
highway pavement construction project, to
modeling production activities for multi facility
projects and to transportation projects.
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7. SCHEDULING WITH LOB
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Prepare a logic diagram.
 To complete each operation, calculate the estimate of
man hours required.
 Select a buffer time which will lookout against the risk of
interference between operations.
 Calculate the equation outputs targets so as to meet a
given project completion date.
Complete the LOB schedule.
In order to bring more balance schedule, inspect the
schedule and access possible attentive.

8. 8
• The above construction procedure gives a proper LOB
schedule. This basic methodology is to determine the available
resources, and evaluate the construction rates that can be
achieved.
• Consider the example of residential building project, where
five buildings are to be constructed. Following steps explain
how the line of balance technique can be used in scheduling.
• The logic diagram is drawn below showing the different
activities of the construction single building, along with
continuity of work.

9. Advantages
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It allows a clear understanding of the amount of
work taking place at a certain time in a specific
place.
It is relatively easier to modify , update and
change the schedule.
 if It allows the better management of sub
contractor and resources.
 It allows problems areas to be identified in
advance.

10. Disadvantages
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LOB does not shows critical activities.
A monitoring device; not as easy to use as a
planning device
Limited to production and assembly type
processes.
It could be divided only by location.
It shows only where the problem is, it does not
shows what actual problem is.

11. Faster planning process
Less tasks
Less links
Faster program creation
Less time to understand & interpret
Easy to try ‘what-if’ scenarios
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12. 12
Activity-based
Formwork
Floor 1
Reinforcement
Floor 1
Pouring Conc.
Floor 1
Finishing
Floor 1
Formwork
Floor 2
Reinforcement
Floor 2
Pouring Conc.
Floor 2
Finishing
Floor 2
Formwork
Floor 3
Reinforcement
Floor 3
Pouring Conc.
Floor 3
Finishing
Floor 3

13. Location-based
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Time
Units
3
2
1
30
.
.
.
.

14. Superior project control
Easy to interpret
Clear uncomplicated displays
Simple to manage
Easy to monitor
Effortless progress updates
Effective control
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15. Three diagrams are used in LOB
1. Production Diagram
Shows the relationships of the activities for a
single unit.
2. Objective Diagram
Used to plot the planned or actual number of
units produced vs. time.
3. Progress Diagram
Shows the number of units for which the
activity has completed . 15

16. THANK YOU
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