Lean Approach to Scheduling in Construction Projects - Revision history

Idasmidt at 08:38, 26 February 2018

2018-02-26T08:38:30Z

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	* Lastly, LBS is compared to CPM, including advantages and disadvantages of both methods. In continuation hereof, it is discussed whether it is favourable to apply the LBS and CPM together.		* Lastly, LBS is compared to CPM, including advantages and disadvantages of both methods. In continuation hereof, it is discussed whether it is favourable to apply the LBS and CPM together.

	Since, it has not been possible to access all figures in English, ~~the below~~ table provides a translation of the words used in the figures.		Since, it has not been possible to access all figures in English, table 1 provides a translation of the words used in the figures.
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	The activity-links, known from the CPM method (see figure 4), are expanded in LBS to include the locations of the activities. The location based activity-links enables optimization of schedules, since activities now can be scheduled to overlap. The different opportunities for optimizing using activity-links are further elaborated in section "use LBS to optimize the time schedule".		The activity-links, known from the CPM method (see figure 4), are expanded in LBS to include the locations of the activities. The location based activity-links enables optimization of schedules, since activities now can be scheduled to overlap. The different opportunities for optimizing using activity-links are further elaborated in section "use LBS to optimize the time schedule".

	There are five different levels of location-based activity-links, which are elaborated in table ~~below~~<ref name="lbs" />.		There are five different levels of location-based activity-links, which are elaborated in table 2<ref name="lbs" />.

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	===Use LBS to optimize the time schedule===		===Use LBS to optimize the time schedule===

	There are several ways of optimizing a time schedule with the use of LBS, and in particular its location based activity-links. ~~Below are~~ some examples of ways of optimizing a time schedule that is scheduled with standard CPM-links<ref name="MTH" /><ref name="lbs" />.		There are several ways of optimizing a time schedule with the use of LBS, and in particular its location based activity-links. Table 3 provides some examples of ways of optimizing a time schedule that is scheduled with standard CPM-links<ref name="MTH" /><ref name="lbs" />.

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	If the project manager is skilled in using LBS software, it is often possible to switch between views such as Gantt chart, CPM network diagram and LBS, thus gaining the strengths of each of the methods<ref name="trimmet" />.		If the project manager is skilled in using LBS software, it is often possible to switch between views such as Gantt chart, CPM network diagram and LBS, thus gaining the strengths of each of the methods<ref name="trimmet" />.

	~~The table below~~ lists advantages and disadvantages of LBS and CPM respectively - and in the case of LBS the table is also seen as a summary of this article<ref name="maylor" />.		Table 4 lists advantages and disadvantages of LBS and CPM respectively - and in the case of LBS the table is also seen as a summary of this article<ref name="maylor" />.

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Idasmidt: /* Introduction */

2018-02-26T08:35:13Z

Introduction

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	Since, it has not been possible to access all figures in English, the below table provides a translation of the words used in the figures.		Since, it has not been possible to access all figures in English, the below table provides a translation of the words used in the figures.
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	\|+ ~~'''~~Table 1~~:''' test~~		\|+ Table 1
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	! Danish		! Danish

Idasmidt at 08:34, 26 February 2018

2018-02-26T08:34:55Z

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	Since, it has not been possible to access all figures in English, the below table provides a translation of the words used in the figures.		Since, it has not been possible to access all figures in English, the below table provides a translation of the words used in the figures.
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	\|+ Table 1		\|+ '''Table 1:''' test
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	! Danish		! Danish

Idasmidt at 08:33, 26 February 2018

2018-02-26T08:33:20Z

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	* The schedule provides a basis for the follow-up of the realized progress of the project and thus also a basis for identifying possible deviations and their consequences.		* The schedule provides a basis for the follow-up of the realized progress of the project and thus also a basis for identifying possible deviations and their consequences.

	The above requirements for the scheduling is independent of the scheduling method, but the way in which these requirements are achieved, is where LBS and CMP differ. Both methods are based on fundamental elements of scheduling such as activities, ressources and activity-links, and LBS also uses the time analysis (network analysis), which underlies the calculation of the critical path in the CPM method. But these typical CPM concepts lose their function in the LBS method, and instead new LBS concepts are introduced: location, location based activities, resource flow and ~~space~~ zone - to name a few.		The above requirements for the scheduling is independent of the scheduling method, but the way in which these requirements are achieved, is where LBS and CMP differ. Both methods are based on fundamental elements of scheduling such as activities, ressources and activity-links, and LBS also uses the time analysis (network analysis), which underlies the calculation of the critical path in the CPM method. But these typical CPM concepts lose their function in the LBS method, and instead new LBS concepts are introduced: location, location based activities, resource flow and scope zone - to name a few.
	The principal difference between the traditional CPM method and LBS is that the CPM method is based on the activities and their logical connections to each other (an "activity based scheduling method"), while the LBS method is more based on the resources and their "flow" through the project (a "ressource oriented scheduling method"). By flow is meant how the activity of each activity flows through the different parts of a project. For a construction project, the different parts will be equal the different locations on the project. Thus, the geographical location is added as an additional dimension in the schedule. That is, the schedule representation not only tells ''when'', but also ''where'' an activity occurs<ref name="lbs" />. The schedule representation will be further elaborated in next section.		The principal difference between the traditional CPM method and LBS is that the CPM method is based on the activities and their logical connections to each other (an "activity based scheduling method"), while the LBS method is more based on the resources and their "flow" through the project (a "ressource oriented scheduling method"). By flow is meant how the activity of each activity flows through the different parts of a project. For a construction project, the different parts will be equal the different locations on the project. Thus, the geographical location is added as an additional dimension in the schedule. That is, the schedule representation not only tells ''when'', but also ''where'' an activity occurs<ref name="lbs" />. The schedule representation will be further elaborated in next section.

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	! Good points		! Good points
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			* Improved schedule overview
			* Establishment of work-flows
			* Improved project control
	* Helps optimizing resource allocation		* Helps optimizing resource allocation
	*test
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	* Simple to draw and read		* Simple to draw and read
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	* Limited knowledge about the application of the LBS method in practice		* Limited knowledge about the application of the LBS method in practice
	* New approach		* New approach to scheduling
	* Difficult to find a sufficient level of details in the initial phase		* Difficult to find a sufficient level of details in the initial phase
	* Well-known concepts of the CPM become irrelevant		* Well-known concepts of the CPM become irrelevant

Idasmidt at 08:28, 26 February 2018

2018-02-26T08:28:16Z

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	<ref name="maylor">Maylor, H., 2010. ''Project Management'' 4th ed., Harlow: Prentice Hall.</ref>		<ref name="maylor">Maylor, H., 2010. ''Project Management'' 4th ed., Harlow: Prentice Hall.</ref>


	~~<references />~~


	~~== References2 ==~~

	<references />		<references />

Idasmidt: /* Should LBS be used instead of CPM? */

2018-02-25T17:59:37Z

Should LBS be used instead of CPM?

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	! Good points		! Good points
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	* ~~Help~~ optimizing resource allocation		* Helps optimizing resource allocation
	*test		*test
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	* New approach		* New approach
	* Difficult to find a sufficient level of details in the initial phase		* Difficult to find a sufficient level of details in the initial phase
			* Well-known concepts of the CPM become irrelevant
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	* Difficult to update manually where there are many changes - charts can quitly become obsolete and therefore discredited		* Difficult to update manually where there are many changes - charts can quitly become obsolete and therefore discredited

Idasmidt: /* Should LBS be used instead of CPM? */

2018-02-25T17:58:13Z

Should LBS be used instead of CPM?

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	* Limited knowledge about the application of the LBS method in practice		* Limited knowledge about the application of the LBS method in practice
	*		* New approach
			* Difficult to find a sufficient level of details in the initial phase
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	* Difficult to update manually where there are many changes - charts can quitly become obsolete and therefore discredited		* Difficult to update manually where there are many changes - charts can quitly become obsolete and therefore discredited

Idasmidt: /* Should LBS be used instead of CPM? */

2018-02-25T17:56:15Z

Should LBS be used instead of CPM?

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	! Limitations		! Limitations
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	*		* Limited knowledge about the application of the LBS method in practice
	*		*
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Idasmidt: /* Should LBS be used instead of CPM? */

2018-02-25T17:55:22Z

Should LBS be used instead of CPM?

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	! Good points		! Good points
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	*~~test~~		* Help optimizing resource allocation
	*test		*test
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	* Very widely used		* Very widely used
	* The basis of the graphical interface for most project planning software		* The basis of the graphical interface for most project planning software
	*test
	\|-		\|-
	! Limitations		! Limitations
	\| ~~Cell B~~		\|
			*
			*
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	* Difficult to update manually where there are many changes - charts can quitly become obsolete and therefore discredited		* Difficult to update manually where there are many changes - charts can quitly become obsolete and therefore discredited

Idasmidt: /* Should LBS be used instead of CPM? */

2018-02-25T17:53:50Z

Should LBS be used instead of CPM?

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	\| Cell B		\| Cell B
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	* Difficult to update		* Difficult to update manually where there are many changes - charts can quitly become obsolete and therefore discredited
	*		* Does not equate time with cost
			* Does not help in optimising resource allocation
			* Can lead to false sense of certainty about the project
	\|}		\|}