The Critical Path Method (CPM) - Revision history

Tkokotas at 14:56, 18 December 2018

2018-12-18T14:56:14Z

← Older revision		Revision as of 14:56, 18 December 2018
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	~~[[Category:Project Management]][[Category:CPM‏‎]][[Category:Management]][[Category:Critical Chain Theory]]~~		''Developed by Sissel Trap Wiegandt''


	This method article describes the Critical Path Method (CPM) also in comparison to other project management methods. This article describes how and when to use CPM methods, moreover discusses the advantages, disadvantages and applicability of the method. CPM is a step-by-step project management method for process planning. CPM was developed in 1956 by the E.I. du Pont de Nemours Company a major chemical plant construction firm in USA<ref name="Woodhead"/>. By focusing on tasks duration CPM identifies the minimum length of time needed to complete a project and helps define the most critical tasks that needs to be accelerate in order to complete the project within the available time. Furthermore CPM can be used to monitor if the project follows the time schedule and it allows you to identify slack time (free resources)<ref name="Ver09"/>.		This method article describes the Critical Path Method (CPM) also in comparison to other project management methods. This article describes how and when to use CPM methods, moreover discusses the advantages, disadvantages and applicability of the method. CPM is a step-by-step project management method for process planning. CPM was developed in 1956 by the E.I. du Pont de Nemours Company a major chemical plant construction firm in USA<ref name="Woodhead"/>. By focusing on tasks duration CPM identifies the minimum length of time needed to complete a project and helps define the most critical tasks that needs to be accelerate in order to complete the project within the available time. Furthermore CPM can be used to monitor if the project follows the time schedule and it allows you to identify slack time (free resources)<ref name="Ver09"/>.
	CPM is one of the fundamental concepts in traditional project management. CPM utilizes tasks duration as the parameter for optimization of the schedule, resource planning and control of construction projects<ref name="Fon62"/>.		CPM is one of the fundamental concepts in traditional project management. CPM utilizes tasks duration as the parameter for optimization of the schedule, resource planning and control of construction projects<ref name="Fon62"/>.
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	==Bibliography==		==Bibliography==
	<references/>		<references/>
			[[Category:Project Management]][[Category:CPM‏‎]][[Category:Management]][[Category:Critical Chain Theory]]

Tkokotas at 17:25, 23 October 2018

2018-10-23T17:25:45Z

← Older revision		Revision as of 17:25, 23 October 2018
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	[[Category:Project Management]][[Category:~~Method artikel~~]][[Category:Management]][[Category:Critical Chain Theory]]		[[Category:Project Management]][[Category:CPM‏‎]][[Category:Management]][[Category:Critical Chain Theory]]
	This method article describes the Critical Path Method (CPM) also in comparison to other project management methods. This article describes how and when to use CPM methods, moreover discusses the advantages, disadvantages and applicability of the method. CPM is a step-by-step project management method for process planning. CPM was developed in 1956 by the E.I. du Pont de Nemours Company a major chemical plant construction firm in USA<ref name="Woodhead"/>. By focusing on tasks duration CPM identifies the minimum length of time needed to complete a project and helps define the most critical tasks that needs to be accelerate in order to complete the project within the available time. Furthermore CPM can be used to monitor if the project follows the time schedule and it allows you to identify slack time (free resources)<ref name="Ver09"/>.		This method article describes the Critical Path Method (CPM) also in comparison to other project management methods. This article describes how and when to use CPM methods, moreover discusses the advantages, disadvantages and applicability of the method. CPM is a step-by-step project management method for process planning. CPM was developed in 1956 by the E.I. du Pont de Nemours Company a major chemical plant construction firm in USA<ref name="Woodhead"/>. By focusing on tasks duration CPM identifies the minimum length of time needed to complete a project and helps define the most critical tasks that needs to be accelerate in order to complete the project within the available time. Furthermore CPM can be used to monitor if the project follows the time schedule and it allows you to identify slack time (free resources)<ref name="Ver09"/>.
	CPM is one of the fundamental concepts in traditional project management. CPM utilizes tasks duration as the parameter for optimization of the schedule, resource planning and control of construction projects<ref name="Fon62"/>.		CPM is one of the fundamental concepts in traditional project management. CPM utilizes tasks duration as the parameter for optimization of the schedule, resource planning and control of construction projects<ref name="Fon62"/>.

Sissel at 09:34, 28 September 2015

2015-09-28T09:34:25Z

← Older revision		Revision as of 09:34, 28 September 2015
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	This method article describes the Critical Path Method (CPM) also in comparison to other project management methods. This article describes how and when to use CPM methods, moreover discusses the advantages, disadvantages and applicability of the method. CPM is a step-by-step project management method for process planning. CPM was developed in 1956 by the E.I. du Pont de Nemours Company a major chemical plant construction firm in USA<ref name="Woodhead"/>. By focusing on tasks duration CPM identifies the minimum length of time needed to complete a project and helps define the most critical tasks that needs to be accelerate in order to complete the project within the available time. Furthermore CPM can be used to monitor if the project follows the time schedule and it allows you to identify slack time (free resources)<ref name="Ver09"/>.		This method article describes the Critical Path Method (CPM) also in comparison to other project management methods. This article describes how and when to use CPM methods, moreover discusses the advantages, disadvantages and applicability of the method. CPM is a step-by-step project management method for process planning. CPM was developed in 1956 by the E.I. du Pont de Nemours Company a major chemical plant construction firm in USA<ref name="Woodhead"/>. By focusing on tasks duration CPM identifies the minimum length of time needed to complete a project and helps define the most critical tasks that needs to be accelerate in order to complete the project within the available time. Furthermore CPM can be used to monitor if the project follows the time schedule and it allows you to identify slack time (free resources)<ref name="Ver09"/>.
	CPM is one of the fundamental concepts in traditional project management. CPM utilizes tasks duration as the parameter for optimization of the schedule, resource planning and control of construction projects<ref name="Fon62"/>.		CPM is one of the fundamental concepts in traditional project management. CPM utilizes tasks duration as the parameter for optimization of the schedule, resource planning and control of construction projects<ref name="Fon62"/>.


	==Introduction to CPM==		==Introduction to CPM==
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	In the early stage of CPM there was not any computer programs to make the calculations and the network diagrams was made using hand drawn nodes to present the stages of a product. Today there are a number of project management software programs available that can do the calculation. <span class="plainlinks">[https://da.wikipedia.org/wiki/Microsoft_Project Microsoft Project] and <span class="plainlinks">[https://en.wikipedia.org/wiki/Smartsheet Smartsheet] are two different computerized tools that use CPM<ref name="Sm15"/>.		In the early stage of CPM there was not any computer programs to make the calculations and the network diagrams was made using hand drawn nodes to present the stages of a product. Today there are a number of project management software programs available that can do the calculation. <span class="plainlinks">[https://da.wikipedia.org/wiki/Microsoft_Project Microsoft Project] and <span class="plainlinks">[https://en.wikipedia.org/wiki/Smartsheet Smartsheet] are two different computerized tools that use CPM<ref name="Sm15"/>.


	==Tool and method==		==Tool and method==
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	'''Phase 4''':The CPM path diagram can be completed and the critical activities determining the overall project duration can be identified (Picture 3). The critical path is identified as the path with the longest duration time e.i. the fastest time the project can be finish. In the example (Picture 3) the critical path shown with the red arrow is A, D and E because the duration time 11 weeks is longer compared to 9 weeks for A, B, C and E.		'''Phase 4''':The CPM path diagram can be completed and the critical activities determining the overall project duration can be identified (Picture 3). The critical path is identified as the path with the longest duration time e.i. the fastest time the project can be finish. In the example (Picture 3) the critical path shown with the red arrow is A, D and E because the duration time 11 weeks is longer compared to 9 weeks for A, B, C and E.
	Furthermore slack time for the individual activities can be calculated either thought Late Finish minus Early Finish or Late Start minus Early Start (Picture 4)<ref name="Fon62"/>.		Furthermore slack time for the individual activities can be calculated either thought Late Finish minus Early Finish or Late Start minus Early Start (Picture 4)<ref name="Fon62"/>.


	==Guidance on use==		==Guidance on use==
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	The handmade CPM is fast to make for relatively simple projects and a god the manager can get a good overview of the tasks importance with the CPM Diagram but it is not as easy with bigger or more complicated projects. Here the computerization can be useful. It requires training to use and money to obtain, but can easy manage complex projects with multiple critical paths. Furthermore, the computerized CPM can quickly calculate new critical paths when a change occurs<ref name="Sm15"/>.		The handmade CPM is fast to make for relatively simple projects and a god the manager can get a good overview of the tasks importance with the CPM Diagram but it is not as easy with bigger or more complicated projects. Here the computerization can be useful. It requires training to use and money to obtain, but can easy manage complex projects with multiple critical paths. Furthermore, the computerized CPM can quickly calculate new critical paths when a change occurs<ref name="Sm15"/>.


	==Limitations==		==Limitations==
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	The advantages of the manual method compared with using the computer method is, that it overcomes certain weaknesses which result from the assumption that each operation in the project is independent of every other operation, except for the sequential relationship shown by the network chart. Furthermore it is impractical to exert intermediate control over the calculations to recognize changes in input data or related effects between operations with the computer method. On the other hand especially with long duration projects where the critical path will change often it is highly applicable with computerized methods being capable of new fast calculations<ref name="Fon62"/>.		The advantages of the manual method compared with using the computer method is, that it overcomes certain weaknesses which result from the assumption that each operation in the project is independent of every other operation, except for the sequential relationship shown by the network chart. Furthermore it is impractical to exert intermediate control over the calculations to recognize changes in input data or related effects between operations with the computer method. On the other hand especially with long duration projects where the critical path will change often it is highly applicable with computerized methods being capable of new fast calculations<ref name="Fon62"/>.


	==Conclusion==		==Conclusion==
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	A challenge with the CPM is not to lose sight of the risks inherent in tasks not on the critical path. A limitation of CPM is that it highlights tasks at greatest risk for causing schedule delays, but it does not identify the source of the schedule risks. To use CPM optimal focus has to be on securing accurate duration time.		A challenge with the CPM is not to lose sight of the risks inherent in tasks not on the critical path. A limitation of CPM is that it highlights tasks at greatest risk for causing schedule delays, but it does not identify the source of the schedule risks. To use CPM optimal focus has to be on securing accurate duration time.


	==Additional reading==		==Additional reading==
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	*'''Burger, Rachel. "The Secret to the Critical Path Method in Construction". Capterra (2015)''': http://blog.capterra.com/construction-critical-path-method/<ref name="CAP15">Burger, Rachel. "The Secret to the Critical Path Method in Constructio" (2015)</ref>A Simpel artikel the Critical Path Method with focus on how to use is in construction. It is very basic and foreseeable.		*'''Burger, Rachel. "The Secret to the Critical Path Method in Construction". Capterra (2015)''': http://blog.capterra.com/construction-critical-path-method/<ref name="CAP15">Burger, Rachel. "The Secret to the Critical Path Method in Constructio" (2015)</ref>A Simpel artikel the Critical Path Method with focus on how to use is in construction. It is very basic and foreseeable.
	*'''Dr. Larry Bennett. "The Ultimate Guide to the Critical Path Method". Smartsheet (2015)''': https://www.smartsheet.com/critical-path-method/<ref name="Sm15">Dr. Larry Bennett. "The Ultimate Guide to the Critical Path Method". (2015)</ref>This is a good link with general informaiton about CPM, background, history, everyday advantages, key steps and comparrison with other methods. This link includes several good youtube clips made by the author Dr. Larry Bennett, a civil engineer, project manager, and author of four books, including a guide on critical path written in 1978. It also cantains multible comments from others with knowledge about CPM.		*'''Dr. Larry Bennett. "The Ultimate Guide to the Critical Path Method". Smartsheet (2015)''': https://www.smartsheet.com/critical-path-method/<ref name="Sm15">Dr. Larry Bennett. "The Ultimate Guide to the Critical Path Method". (2015)</ref>This is a good link with general informaiton about CPM, background, history, everyday advantages, key steps and comparrison with other methods. This link includes several good youtube clips made by the author Dr. Larry Bennett, a civil engineer, project manager, and author of four books, including a guide on critical path written in 1978. It also cantains multible comments from others with knowledge about CPM.


	==Bibliography==		==Bibliography==
	<references/>		<references/>

Sissel at 09:33, 28 September 2015

2015-09-28T09:33:04Z

← Older revision		Revision as of 09:33, 28 September 2015
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	===Insuring time schedule===		===Insuring time schedule===
	The project manager has difficulties in estimating the exact duration for a project. This is caused by both CPM being based on the uncertain estimated task duration time and occurrence of unexpected factors which may impact tasks completion. Considerations needs to be made to minimise the effect of unexpected factors<ref name="Sm15"/>.		The project manager has difficulties in estimating the exact duration for a project. This is caused by both CPM being based on the uncertain estimated task duration time and occurrence of unexpected factors which may impact tasks completion. Considerations needs to be made to minimise the effect of unexpected factors<ref name="Sm15"/>. Using the CPM the project manager may realize that he needs to compress the project schedule. There is two way of solving the issue either Fast Tracking or Crashing.



	Using the CPM the project manager may realize that he needs to compress the project schedule. There is two way of solving the issue either Fast Tracking or Crashing.

	'''Fast Tracking'''		'''Fast Tracking'''
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	A new and more efficient way of utilizing the CPM is in the Critical Chain Management (CCM). CCM has five basic conditions (no milestones, no multitasking, no reporting of early completions of tasks, individual estimates of task duration is reduced with 50 %, buffer time is introduced).		A new and more efficient way of utilizing the CPM is in the Critical Chain Management (CCM). CCM has five basic conditions (no milestones, no multitasking, no reporting of early completions of tasks, individual estimates of task duration is reduced with 50 %, buffer time is introduced).
	The task time estimate is minimised with 50 % in the critical chain management.This is compensated for by introduction of the buffer time. Further the buffer time are used as a warning mechanism during project schedule execution. If more than 66% of the buffer have been used then actions needs to be made<ref name="Bell"/>.		The task time estimate is minimised with 50 % in the critical chain management.This is compensated for by introduction of the buffer time. Further the buffer time are used as a warning mechanism during project schedule execution. If more than 66% of the buffer have been used then actions needs to be made<ref name="Bell"/>.




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	==Limitations==		==Limitations==
	A limitation of CPM is that it highlights tasks at greatest risk for causing schedule delays, but it does not identify the source of the schedule risks. Different methods, such as the Critical Resource Path Technique identified by Aguanno (2002) calculate alternate critical paths that focus on the risks caused by dependence on unique or constrained resources<ref name="KEN"/>.		A limitation of CPM is that it highlights tasks at greatest risk for causing schedule delays, but it does not identify the source of the schedule risks. Different methods, such as the Critical Resource Path Technique identified by Aguanno (2002) calculate alternate critical paths that focus on the risks caused by dependence on unique or constrained resources<ref name="KEN"/>.




	===Time estimates===		===Time estimates===
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	CPM often provides a better understanding than the conventional bar chart, because it illustrates relationships that controls the order of performance in the various operations.		CPM often provides a better understanding than the conventional bar chart, because it illustrates relationships that controls the order of performance in the various operations.
	The knowledge of the operational flow can be used for resource allocation and equipment requirement estimates. Furthermore identifyed slack time can be used to optimize resource allocation.		The knowledge of the operational flow can be used for resource allocation and equipment requirement estimates. Furthermore identifyed slack time can be used to optimize resource allocation.
	A manually calculated and drawn CPM diagrams is easy to perform and gives a good overview of the project. With more complicated		A manually calculated and drawn CPM diagrams is easy to perform and gives a good overview of the project. With more complicated project the need for computer programs are mandatory. Specialized computerized methods to calculate the critical path have been developed.


	project the need for computer programs are mandatory. Specialized computerized methods to calculate the critical path have been developed.
	Especially with long duration projects where the critical path will change often it is highly applicable with computerized methods being capable of new fast calculations. Moreover CPM provides a mechanism for determining all of the operations affected by a given change as well as the effect on project duration. It provides the mechanism for determine the least cost to compress project completion time.		Especially with long duration projects where the critical path will change often it is highly applicable with computerized methods being capable of new fast calculations. Moreover CPM provides a mechanism for determining all of the operations affected by a given change as well as the effect on project duration. It provides the mechanism for determine the least cost to compress project completion time.

Sissel: /* Tool and method */

2015-09-28T09:29:37Z

Tool and method

← Older revision		Revision as of 09:29, 28 September 2015
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	==Tool and method==		==Tool and method==
	{\| style=class="wikitable" width="66%" {\| class="wikitable" width="66%" {\| class="wikitable" style="float:right; margin-left: 10px;"		{\| style=class="wikitable" width="48%" {\| class="wikitable" width="48%" {\| class="wikitable" style="float:right; margin-left: 10px;"
	\|+ '''Table 1:''' Details of critical path<ref name="DrP11"/>		\|+ '''Table 1:''' Details of critical path<ref name="DrP11"/>
	! style="background:#d0e5f5" \| ''' Activity '''		! style="background:#d0e5f5" \| ''' Activity '''

Sissel: /* Additional reading */

2015-09-28T09:26:24Z

Additional reading

← Older revision		Revision as of 09:26, 28 September 2015
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	*'''Dr. Zelbst, Pamela. "Critical Path Method and PERT explained". (2015)'''This is a nice clip from youtube explaining the differences between CPM and PERT. First it explains in detail how the CPM can be used followed up by exampels. Secondly it compares the models. <ref name="DrP11">Dr. Zelbst, Pamela. "Critical Path Method and PERT explained" (2015)</ref>		*'''Dr. Zelbst, Pamela. "Critical Path Method and PERT explained". (2015)'''This is a nice clip from youtube explaining the differences between CPM and PERT. First it explains in detail how the CPM can be used followed up by exampels. Secondly it compares the models. <ref name="DrP11">Dr. Zelbst, Pamela. "Critical Path Method and PERT explained" (2015)</ref>
	{{#ev:youtube\|watch\|200\|right\|Critical Path Method and PERT explained by Andrew Bell\|frame}}		{{#ev:youtube\|watch\|200\|right\|Critical Path Method and PERT explained by Andrew Bell\|frame}}

	*'''Bell, Andrew of coventry University. "Critical Chain Project Management". (2014)''' This video is about Critical Chain Project Management by Andrew Bell from Coventry University. the video also contains information about Agile Project Management. <ref name="Bell">Bell, Andrew. "Critical Chain Project Management" (2014)</ref>		*'''Bell, Andrew of coventry University. "Critical Chain Project Management". (2014)''' This video is about Critical Chain Project Management by Andrew Bell from Coventry University. the video also contains information about Agile Project Management. <ref name="Bell">Bell, Andrew. "Critical Chain Project Management" (2014)</ref>
	{{#ev:youtube\|www.youtube.com/watch?v=7Xf-waj23P8\|200\|right\|Critical Chain Project Management by CEO Rob Newbold\|frame}}		{{#ev:youtube\|www.youtube.com/watch?v=7Xf-waj23P8\|200\|right\|Critical Chain Project Management by CEO Rob Newbold\|frame}}

	*'''Newbold, Rob. "Critical Chain Project Management". (2011)''' This Video is made by Rob Newbold who is CEO of ProChain Solutions. It gives an introduction to Critical Chain approach to project management and how it provides an opportunity to make improvements to how a compagny managers its projects. <ref name="Rob">CEO Newbold, Rob. "Critical Chain Project Management" (2011)</ref>		*'''Newbold, Rob. "Critical Chain Project Management". (2011)''' This Video is made by Rob Newbold who is CEO of ProChain Solutions. It gives an introduction to Critical Chain approach to project management and how it provides an opportunity to make improvements to how a compagny managers its projects. <ref name="Rob">CEO Newbold, Rob. "Critical Chain Project Management" (2011)</ref>

Sissel: /* Additional reading */

2015-09-28T09:25:41Z

Additional reading

← Older revision		Revision as of 09:25, 28 September 2015
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	*'''Aguanno, Kevin . "Critical Path: An Extended Definition." MMPUBS.com (2002)'''. <ref name="KEN">Aguanno, Kevin. "Critical Path: An Extended Definition." MMPUBS (2002).</ref>This is a five pages long artikel by Senior Project Manager, Kevin Aguanno. It describes history, definitions, limitations, alternatives and behind the Critical Path.		*'''Aguanno, Kevin . "Critical Path: An Extended Definition." MMPUBS.com (2002)'''. <ref name="KEN">Aguanno, Kevin. "Critical Path: An Extended Definition." MMPUBS (2002).</ref>This is a five pages long artikel by Senior Project Manager, Kevin Aguanno. It describes history, definitions, limitations, alternatives and behind the Critical Path.
	*'''Orr, Alan. "Uncharted Territory?". Engineering Management Journal. (2003)'''. <ref name="Orr03">Orr, Alan. "Uncharted Territory?". Engineering Management Journal. (2003).</ref>This is an article written by Alan Oro, and is written for a journal called Engineering Management Journal. It provides clear and thorough information about the basis of a Gantt chart, how to preform a Gantt Chart, individual features and how it can be used in management.		*'''Orr, Alan. "Uncharted Territory?". Engineering Management Journal. (2003)'''. <ref name="Orr03">Orr, Alan. "Uncharted Territory?". Engineering Management Journal. (2003).</ref>This is an article written by Alan Oro, and is written for a journal called Engineering Management Journal. It provides clear and thorough information about the basis of a Gantt chart, how to preform a Gantt Chart, individual features and how it can be used in management.
			{{#ev:youtube\|www.youtube.com/watch?v=DdDzybQ_9vM\|200\|right\|Critical Path Method and PERT explained by Dr. Pamela Zelbst\|frame}}
	~~'''Books'''~~
	*'''Woodhead, James M. Antill & Ronald W. "Critical Path Methods in Construction Practice". John Wiley & Sons, Inc. (1990)'''. <ref name="Woodhead"> Woodhead, James M. Antill & Ronald W."Critical Path Methods in Construction Practice" John Wiley & Sons, Inc. (1990).</ref>This is an "old" book from 1990. The descriptions of the Critical Path Method is very clarifying and detailed.
	*'''Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962)'''. <ref name="Fon62">Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962).</ref>This book is mad incoorporation with the department of civil engineering og Standford University by Jown W. Fondahl a professor of Civil Engineering. The preparation for this book is made under a research contract by the U.S. Navy. It contains the CPM approach and history. Because of its age the section about future implications it outdated. {{#ev:youtube\|www.youtube.com/watch?v=DdDzybQ_9vM\|200\|right\|Critical Path Method and PERT explained by Dr. Pamela Zelbst\|frame}}
	'''Videos'''		'''Videos'''
	*'''Dr. Zelbst, Pamela. "Critical Path Method and PERT explained". (2015)'''This is a nice clip from youtube explaining the differences between CPM and PERT. First it explains in detail how the CPM can be used followed up by exampels. Secondly it compares the models. <ref name="DrP11">Dr. Zelbst, Pamela. "Critical Path Method and PERT explained" (2015)</ref>		*'''Dr. Zelbst, Pamela. "Critical Path Method and PERT explained". (2015)'''This is a nice clip from youtube explaining the differences between CPM and PERT. First it explains in detail how the CPM can be used followed up by exampels. Secondly it compares the models. <ref name="DrP11">Dr. Zelbst, Pamela. "Critical Path Method and PERT explained" (2015)</ref>
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	*'''Newbold, Rob. "Critical Chain Project Management". (2011)''' This Video is made by Rob Newbold who is CEO of ProChain Solutions. It gives an introduction to Critical Chain approach to project management and how it provides an opportunity to make improvements to how a compagny managers its projects. <ref name="Rob">CEO Newbold, Rob. "Critical Chain Project Management" (2011)</ref>		*'''Newbold, Rob. "Critical Chain Project Management". (2011)''' This Video is made by Rob Newbold who is CEO of ProChain Solutions. It gives an introduction to Critical Chain approach to project management and how it provides an opportunity to make improvements to how a compagny managers its projects. <ref name="Rob">CEO Newbold, Rob. "Critical Chain Project Management" (2011)</ref>

			'''Books'''
			*'''Woodhead, James M. Antill & Ronald W. "Critical Path Methods in Construction Practice". John Wiley & Sons, Inc. (1990)'''. <ref name="Woodhead"> Woodhead, James M. Antill & Ronald W."Critical Path Methods in Construction Practice" John Wiley & Sons, Inc. (1990).</ref>This is an "old" book from 1990. The descriptions of the Critical Path Method is very clarifying and detailed.
			*'''Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962)'''. <ref name="Fon62">Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962).</ref>This book is mad incoorporation with the department of civil engineering og Standford University by Jown W. Fondahl a professor of Civil Engineering. The preparation for this book is made under a research contract by the U.S. Navy. It contains the CPM approach and history. Because of its age the section about future implications it outdated.

	'''Links'''		'''Links'''

Sissel: /* Conclusion */

2015-09-28T09:23:59Z

Conclusion

← Older revision		Revision as of 09:23, 28 September 2015
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	CPM often provides a better understanding than the conventional bar chart, because it illustrates relationships that controls the order of performance in the various operations.		CPM often provides a better understanding than the conventional bar chart, because it illustrates relationships that controls the order of performance in the various operations.
	The knowledge of the operational flow can be used for resource allocation and equipment requirement estimates. Furthermore identifyed slack time can be used to optimize resource allocation.		The knowledge of the operational flow can be used for resource allocation and equipment requirement estimates. Furthermore identifyed slack time can be used to optimize resource allocation.
	A manually calculated and drawn CPM diagrams is easy to perform and gives a good overview of the project. With more complicated		A manually calculated and drawn CPM diagrams is easy to perform and gives a good overview of the project. With more complicated


	project the need for computer programs are mandatory. Specialized computerized methods to calculate the critical path have been developed.		project the need for computer programs are mandatory. Specialized computerized methods to calculate the critical path have been developed.

Sissel: /* Conclusion */

2015-09-28T09:23:11Z

Conclusion

← Older revision		Revision as of 09:23, 28 September 2015
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	CPM often provides a better understanding than the conventional bar chart, because it illustrates relationships that controls the order of performance in the various operations.		CPM often provides a better understanding than the conventional bar chart, because it illustrates relationships that controls the order of performance in the various operations.
	The knowledge of the operational flow can be used for resource allocation and equipment requirement estimates. Furthermore identifyed slack time can be used to optimize resource allocation.		The knowledge of the operational flow can be used for resource allocation and equipment requirement estimates. Furthermore identifyed slack time can be used to optimize resource allocation.
	A manually calculated and drawn CPM diagrams is easy to perform and gives a good overview of the project. With more complicated project the need for computer programs are mandatory. Specialized computerized methods to calculate the critical path have been developed.		A manually calculated and drawn CPM diagrams is easy to perform and gives a good overview of the project. With more complicated

			project the need for computer programs are mandatory. Specialized computerized methods to calculate the critical path have been developed.
	Especially with long duration projects where the critical path will change often it is highly applicable with computerized methods being capable of new fast calculations. Moreover CPM provides a mechanism for determining all of the operations affected by a given change as well as the effect on project duration. It provides the mechanism for determine the least cost to compress project completion time.		Especially with long duration projects where the critical path will change often it is highly applicable with computerized methods being capable of new fast calculations. Moreover CPM provides a mechanism for determining all of the operations affected by a given change as well as the effect on project duration. It provides the mechanism for determine the least cost to compress project completion time.

Sissel: /* Additional reading */

2015-09-28T09:21:39Z

Additional reading

← Older revision		Revision as of 09:21, 28 September 2015
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	'''Books'''		'''Books'''
	*'''Woodhead, James M. Antill & Ronald W. "Critical Path Methods in Construction Practice". John Wiley & Sons, Inc. (1990)'''. <ref name="Woodhead"> Woodhead, James M. Antill & Ronald W."Critical Path Methods in Construction Practice" John Wiley & Sons, Inc. (1990).</ref>This is an "old" book from 1990. The descriptions of the Critical Path Method is very clarifying and detailed.		*'''Woodhead, James M. Antill & Ronald W. "Critical Path Methods in Construction Practice". John Wiley & Sons, Inc. (1990)'''. <ref name="Woodhead"> Woodhead, James M. Antill & Ronald W."Critical Path Methods in Construction Practice" John Wiley & Sons, Inc. (1990).</ref>This is an "old" book from 1990. The descriptions of the Critical Path Method is very clarifying and detailed.
	*'''Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962)'''. <ref name="Fon62">Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962).</ref>This book is mad incoorporation with the department of civil engineering og Standford University by Jown W. Fondahl a professor of Civil Engineering. The preparation for this book is made under a research contract by the U.S. Navy. It contains the CPM approach and history. Because of its age the section about future implications it outdated.		*'''Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962)'''. <ref name="Fon62">Fondahl, John W. "A non-computer approach to the critical path method for the construction". Stanford University. (1962).</ref>This book is mad incoorporation with the department of civil engineering og Standford University by Jown W. Fondahl a professor of Civil Engineering. The preparation for this book is made under a research contract by the U.S. Navy. It contains the CPM approach and history. Because of its age the section about future implications it outdated. {{#ev:youtube\|www.youtube.com/watch?v=DdDzybQ_9vM\|200\|right\|Critical Path Method and PERT explained by Dr. Pamela Zelbst\|frame}}
	{{#ev:youtube\|www.youtube.com/watch?v=DdDzybQ_9vM\|200\|right\|Critical Path Method and PERT explained by Dr. Pamela Zelbst\|frame}}
	'''Videos'''		'''Videos'''
	*'''Dr. Zelbst, Pamela. "Critical Path Method and PERT explained". (2015)'''This is a nice clip from youtube explaining the differences between CPM and PERT. First it explains in detail how the CPM can be used followed up by exampels. Secondly it compares the models. <ref name="DrP11">Dr. Zelbst, Pamela. "Critical Path Method and PERT explained" (2015)</ref>		*'''Dr. Zelbst, Pamela. "Critical Path Method and PERT explained". (2015)'''This is a nice clip from youtube explaining the differences between CPM and PERT. First it explains in detail how the CPM can be used followed up by exampels. Secondly it compares the models. <ref name="DrP11">Dr. Zelbst, Pamela. "Critical Path Method and PERT explained" (2015)</ref>