Critical Path Method in Construction Industry

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Critical path is a sequence of activities that lead to the shortest possible completion of the project. These activities are called critical activities and every delay in each of these activities will result in delay of the whole project. This article depicts ways of using the method to analyze projects as a several groups of activities to reduce the bottleneck points and finish the project on time and within the budget. Methodology of '''creation of the basic CPM direct acyclic graph''' (DAG) is presented in a way of short step-by-step tutorial.
 
Critical path is a sequence of activities that lead to the shortest possible completion of the project. These activities are called critical activities and every delay in each of these activities will result in delay of the whole project. This article depicts ways of using the method to analyze projects as a several groups of activities to reduce the bottleneck points and finish the project on time and within the budget. Methodology of '''creation of the basic CPM direct acyclic graph''' (DAG) is presented in a way of short step-by-step tutorial.
  
Construction projects, although very complicated are similar or even identical in a way of having similar unit activities and resources. Scheduling in linear construction projects require use of aforementioned resources from one activity to another in such a way, that continuity and logic between network activities is sustained. In the article the procedure for CPM-based scheduling in linear construction projects is described and explained. Moreover, '''Resource Activity Critical Path Method''' (RACPM) is presented based on Hong Kong Polytechnic University practical method based on the additional dimension of time added to the dimension of time.  
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Construction projects, although very complicated are similar or even identical in a way of having similar unit activities and resources. '''Scheduling in linear construction projects''' require use of aforementioned resources from one activity to another in such a way, that continuity and logic between network activities is sustained. In the article the procedure for CPM-based scheduling in linear construction projects is described and explained. Moreover, '''Resource Activity Critical Path Method''' (RACPM) is presented based on Hong Kong Polytechnic University practical method based on the additional dimension of time added to the dimension of time.  
 
As a summary, advantages and disadvantages of the method are described as well as limitations to the use of CP-method. At the end of the article annotated bibliography with reference links is provided.
 
As a summary, advantages and disadvantages of the method are described as well as limitations to the use of CP-method. At the end of the article annotated bibliography with reference links is provided.
  

Revision as of 22:11, 13 September 2015

Critical Path Method (CPM) is a project management method created in 1958 in American company DuPont to improve internal production processes. Since then the method is widely used in industries such as construction, aerospace, defense, engineering, research and many more. However, this article focuses on its use in civil engineering industry and construction. The method is suitable for all kind of construction projects that require many independent activities to be completed.

Critical path is a sequence of activities that lead to the shortest possible completion of the project. These activities are called critical activities and every delay in each of these activities will result in delay of the whole project. This article depicts ways of using the method to analyze projects as a several groups of activities to reduce the bottleneck points and finish the project on time and within the budget. Methodology of creation of the basic CPM direct acyclic graph (DAG) is presented in a way of short step-by-step tutorial.

Construction projects, although very complicated are similar or even identical in a way of having similar unit activities and resources. Scheduling in linear construction projects require use of aforementioned resources from one activity to another in such a way, that continuity and logic between network activities is sustained. In the article the procedure for CPM-based scheduling in linear construction projects is described and explained. Moreover, Resource Activity Critical Path Method (RACPM) is presented based on Hong Kong Polytechnic University practical method based on the additional dimension of time added to the dimension of time. As a summary, advantages and disadvantages of the method are described as well as limitations to the use of CP-method. At the end of the article annotated bibliography with reference links is provided.

Contents

1 Big idea

1.1 Short history

1.2 Evolution

1.3 General methodology

3 Graph creation method

4 Critical path based scheduling in constrction

5 Resource-Activity Critical Path Method

6 Use Limitations

7 Advantages and disadvantages

8 Conclusions

9 Bibliography and further links

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