Line of balance (LOB) - Revision history

Designing Buildings: Reverted edits by 190.235.223.66 (talk) to last revision by Designing Buildings

2020-09-09T06:09:06Z

Reverted edits by 190.235.223.66 (talk) to last revision by Designing Buildings

← Older revision		Revision as of 06:09, 9 September 2020
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	The LOB technique was created by the Goodyear Company in the early 1940s, before being adopted and developed by the U.S. Navy in the early-1950s. It was subsequently developed for industrial manufacturing and production control, as well as the basic concepts behind planning and scheduling in the construction industry.		The LOB technique was created by the Goodyear Company in the early 1940s, before being adopted and developed by the U.S. Navy in the early-1950s. It was subsequently developed for industrial manufacturing and production control, as well as the basic concepts behind planning and scheduling in the construction industry.

−	An LOB diagram shows the repetitive project work as a single line on a graph. It differs from a bar chart which shows a particular ~~activitys~~ duration, by showing the rate at which the work has to be undertaken to stay on schedule, as well as the relationship of one trade or process to the subsequent trade or process.	+	An LOB diagram shows the repetitive project work as a single line on a graph. It differs from a bar chart which shows a particular activity’s duration, by showing the rate at which the work has to be undertaken to stay on schedule, as well as the relationship of one trade or process to the subsequent trade or process.

	The project timeline is represented along the x-axis of the LOB diagram. The work areas that define the project are represented along the y-axis. This is the starting point for the LOB schedule:		The project timeline is represented along the x-axis of the LOB diagram. The work areas that define the project are represented along the y-axis. This is the starting point for the LOB schedule:

190.235.223.66 at 03:46, 9 September 2020

2020-09-09T03:46:43Z

← Older revision		Revision as of 03:46, 9 September 2020
Line 10:		Line 10:
	The LOB technique was created by the Goodyear Company in the early 1940s, before being adopted and developed by the U.S. Navy in the early-1950s. It was subsequently developed for industrial manufacturing and production control, as well as the basic concepts behind planning and scheduling in the construction industry.		The LOB technique was created by the Goodyear Company in the early 1940s, before being adopted and developed by the U.S. Navy in the early-1950s. It was subsequently developed for industrial manufacturing and production control, as well as the basic concepts behind planning and scheduling in the construction industry.

−	An LOB diagram shows the repetitive project work as a single line on a graph. It differs from a bar chart which shows a particular ~~activity’s~~ duration, by showing the rate at which the work has to be undertaken to stay on schedule, as well as the relationship of one trade or process to the subsequent trade or process.	+	An LOB diagram shows the repetitive project work as a single line on a graph. It differs from a bar chart which shows a particular activitys duration, by showing the rate at which the work has to be undertaken to stay on schedule, as well as the relationship of one trade or process to the subsequent trade or process.

	The project timeline is represented along the x-axis of the LOB diagram. The work areas that define the project are represented along the y-axis. This is the starting point for the LOB schedule:		The project timeline is represented along the x-axis of the LOB diagram. The work areas that define the project are represented along the y-axis. This is the starting point for the LOB schedule:

Designing Buildings at 09:36, 7 September 2020

2020-09-07T09:36:49Z

← Older revision		Revision as of 09:36, 7 September 2020
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	* CPM Tutor - [http://www.cpmtutor.com/c02/lineofbalance.html Line of balance]		* CPM Tutor - [http://www.cpmtutor.com/c02/lineofbalance.html Line of balance]

−	[[Category:~~Construction_management~~]] [[Category:~~Cost_/_business_planning~~]] [[Category:~~Products_~~/~~_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_management]] [[Category:Cost_/_business_planning]] [[Category:Products_/_components]]

Editor at 15:32, 24 February 2017

2017-02-24T15:32:37Z

← Older revision		Revision as of 15:32, 24 February 2017
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	* Programme for building design and construction.		* Programme for building design and construction.
	* Project manager.		* Project manager.
		+	* Resource leveling.
	* Scheduling construction activities.		* Scheduling construction activities.
	* Time-location chart.		* Time-location chart.
Line 66:		Line 67:
	* CPM Tutor - [http://www.cpmtutor.com/c02/lineofbalance.html Line of balance]		* CPM Tutor - [http://www.cpmtutor.com/c02/lineofbalance.html Line of balance]

−	[[Category:Construction_management]] [[Category:Cost_/_business_planning]] [[Category:Products_/_components]]	+	[[Category:Construction_management]] [[Category:Cost_/_business_planning]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Editor at 13:13, 1 February 2017

2017-02-01T13:13:05Z

← Older revision		Revision as of 13:13, 1 February 2017
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	* Scheduling construction activities.		* Scheduling construction activities.
	* Time-location chart.		* Time-location chart.
		+	* Time management of construction projects.

	=== External resources ===		=== External resources ===

Editor at 11:51, 20 January 2017

2017-01-20T11:51:15Z

← Older revision		Revision as of 11:51, 20 January 2017
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	* Logistics management.		* Logistics management.
	* Milestones.		* Milestones.
		+	* Pareto analysis.
	* Programme for building design and construction.		* Programme for building design and construction.
	* Project manager.		* Project manager.

Designing Buildings at 09:25, 11 January 2017

2017-01-11T09:25:16Z

← Older revision		Revision as of 09:25, 11 January 2017
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−	Line of balance (LOB) is a management control process used in construction where the project contains blocks of repetitive work activities, such as roads, pipelines, tunnels, railways and high-rise buildings. LOB collects, measures and presents information relating to time, cost and completion, and presents it against a specific plan. ~~By doing so, LOB assists project management with the following:~~	+	Line of balance (LOB) is a management control process used in construction where the project contains blocks of repetitive work activities, such as roads, pipelines, tunnels, railways and high-rise buildings. LOB collects, measures and presents information relating to time, cost and completion, and presents it against a specific plan.

−	* ~~Using~~ a formal objective ~~plan to compare~~ against actual progress.	+	LOB assists project management by:
		+
		+	* Comparing a formal objective against actual progress.
	* Examining the extent of any deviations from specific plans, in terms of knock-on effects.		* Examining the extent of any deviations from specific plans, in terms of knock-on effects.
	* Identifying in advance problematic areas where corrective action may be required.		* Identifying in advance problematic areas where corrective action may be required.
−	* ~~Working out a forecast of~~ future performance.	+	* Forecasting future performance.

−	The LOB technique was created by the Goodyear Company in the early 1940s, before being adopted and developed by the U.S. Navy in the early-1950s. It was subsequently developed for industrial manufacturing and production control, as well as the basic concepts ~~being applied as the~~ planning and scheduling ~~method~~ in the construction industry.	+	The LOB technique was created by the Goodyear Company in the early 1940s, before being adopted and developed by the U.S. Navy in the early-1950s. It was subsequently developed for industrial manufacturing and production control, as well as the basic concepts behind planning and scheduling in the construction industry.

	An LOB diagram shows the repetitive project work as a single line on a graph. It differs from a bar chart which shows a particular activity’s duration, by showing the rate at which the work has to be undertaken to stay on schedule, as well as the relationship of one trade or process to the subsequent trade or process.		An LOB diagram shows the repetitive project work as a single line on a graph. It differs from a bar chart which shows a particular activity’s duration, by showing the rate at which the work has to be undertaken to stay on schedule, as well as the relationship of one trade or process to the subsequent trade or process.
Line 12:		Line 14:
	The project timeline is represented along the x-axis of the LOB diagram. The work areas that define the project are represented along the y-axis. This is the starting point for the LOB schedule:		The project timeline is represented along the x-axis of the LOB diagram. The work areas that define the project are represented along the y-axis. This is the starting point for the LOB schedule:

−	[[File:LOB1.png]]	+	[[File:LOB1.png\|link=File:LOB1.png]]

−	In the figure below, it can be seen that Activity A lasts a ~~total duration of~~ 10 weeks. The productivity of A, spread across each of the work areas, is 2 weeks per floor.	+	In the figure below, it can be seen that Activity A lasts a 10 weeks. The productivity of A, spread across each of the work areas, is 2 weeks per floor.

−	[[File:LOB2.png]]	+	[[File:LOB2.png\|link=File:LOB2.png]]

	If Activity B has a productivity rate of 1 week per floor, then it can begin work at the end of the second week.		If Activity B has a productivity rate of 1 week per floor, then it can begin work at the end of the second week.

−	[[File:LOB3.png]]	+	[[File:LOB3.png\|link=File:LOB3.png]]

	As Activity B continues, at the end of the week 4 work can begin on the second floor; at the end of week 6 work can begin on the third floor, and so on. The horizontal red dashed lines represent the breaks in Activity B work, where the workforce is waiting for Activity A to clear the way for them to continue. In this example, starting Activity B as soon as possible will result in a lost productivity of 4 weeks.		As Activity B continues, at the end of the week 4 work can begin on the second floor; at the end of week 6 work can begin on the third floor, and so on. The horizontal red dashed lines represent the breaks in Activity B work, where the workforce is waiting for Activity A to clear the way for them to continue. In this example, starting Activity B as soon as possible will result in a lost productivity of 4 weeks.

−	[[File:LOB4.png]]	+	[[File:LOB4.png\|link=File:LOB4.png]]

−	The diagram below ~~indicates~~ that by delaying the start of Activity B for 4 weeks, the workforce can continue uninterrupted, and hence be more productive. This enables a better understanding of how workforces follow one another through ~~the job~~ activities.	+	The diagram below shows that by delaying the start of Activity B for 4 weeks, the workforce can continue uninterrupted, and hence are more productive. This enables a better understanding of how workforces follow one another through activities.

−	[[File:LOB5.png]]	+	[[File:LOB5.png\|link=File:LOB5.png]]

−	The advantages of LOB include ~~the following~~:	+	The advantages of LOB include:

−	* ~~Allows~~ a ~~clear~~ understanding of the amount of work taking place at a certain time in a specific place.	+	* Allowing a clearer understanding of the amount of work taking place at a certain time in a specific place.
	* Resources can be optimised for a large number of repeated work activities.		* Resources can be optimised for a large number of repeated work activities.
	* As all information is available for each activity, it allows easier cost and time optimisation analysis.		* As all information is available for each activity, it allows easier cost and time optimisation analysis.
−	* ~~Easier~~ to modify, update and change the schedule.	+	* It is relatively easy to modify, update and change the schedule.
−	* ~~Allows~~ better management of ~~the project~~ subcontractors and resources.	+	* It allows better management of subcontractors and resources.
−	* ~~Allows~~ problem areas to be identified in advance.	+	* It allows problem areas to be identified in advance.

	= Find out more =		= Find out more =

Editor: Created page with "Line of balance (LOB) is a management control process used in construction where the project contains blocks of repetitive work activities, such as roads, pipelines, tunnels, rai..."

2017-01-09T12:58:28Z

Created page with "Line of balance (LOB) is a management control process used in construction where the project contains blocks of repetitive work activities, such as roads, pipelines, tunnels, rai..."

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Line of balance (LOB) is a management control process used in construction where the project contains blocks of repetitive work activities, such as roads, pipelines, tunnels, railways and high-rise buildings. LOB collects, measures and presents information relating to time, cost and completion, and presents it against a specific plan. By doing so, LOB assists project management with the following:

* Using a formal objective plan to compare against actual progress.
* Examining the extent of any deviations from specific plans, in terms of knock-on effects.
* Identifying in advance problematic areas where corrective action may be required.
* Working out a forecast of future performance.

The LOB technique was created by the Goodyear Company in the early 1940s, before being adopted and developed by the U.S. Navy in the early-1950s. It was subsequently developed for industrial manufacturing and production control, as well as the basic concepts being applied as the planning and scheduling method in the construction industry.

An LOB diagram shows the repetitive project work as a single line on a graph. It differs from a bar chart which shows a particular activity’s duration, by showing the rate at which the work has to be undertaken to stay on schedule, as well as the relationship of one trade or process to the subsequent trade or process.

The project timeline is represented along the x-axis of the LOB diagram. The work areas that define the project are represented along the y-axis. This is the starting point for the LOB schedule:

[[File:LOB1.png]]

In the figure below, it can be seen that Activity A lasts a total duration of 10 weeks. The productivity of A, spread across each of the work areas, is 2 weeks per floor.

[[File:LOB2.png]]

If Activity B has a productivity rate of 1 week per floor, then it can begin work at the end of the second week.

[[File:LOB3.png]]

As Activity B continues, at the end of the week 4 work can begin on the second floor; at the end of week 6 work can begin on the third floor, and so on. The horizontal red dashed lines represent the breaks in Activity B work, where the workforce is waiting for Activity A to clear the way for them to continue. In this example, starting Activity B as soon as possible will result in a lost productivity of 4 weeks.

[[File:LOB4.png]]

The diagram below indicates that by delaying the start of Activity B for 4 weeks, the workforce can continue uninterrupted, and hence be more productive. This enables a better understanding of how workforces follow one another through the job activities.

[[File:LOB5.png]]

The advantages of LOB include the following:

* Allows a clear understanding of the amount of work taking place at a certain time in a specific place.
* Resources can be optimised for a large number of repeated work activities.
* As all information is available for each activity, it allows easier cost and time optimisation analysis.
* Easier to modify, update and change the schedule.
* Allows better management of the project subcontractors and resources.
* Allows problem areas to be identified in advance.

= Find out more =

=== Related articles on Designing Buildings Wiki ===

* Activity schedule.
* Advanced manufacturing.
* Block planning.
* Clash avoidance.
* Critical path method.
* Design coordination.
* Gantt chart.
* Key dates.
* Logistics management.
* Milestones.
* Programme for building design and construction.
* Project manager.
* Scheduling construction activities.
* Time-location chart.

=== External resources ===

* CPM Tutor - [http://www.cpmtutor.com/c02/lineofbalance.html Line of balance]

[[Category:Construction_management]] [[Category:Cost_/_business_planning]] [[Category:Products_/_components]]