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A Case Study of Productivity Improvement by Electrical Prefabrication
Prefabrication is believed to improve construction labor productivity by increasing direct work rates and reducing rework and onsite injuries. Anecdotal evidence shows that electrical contractors are able to improve their average labor productivity by 30% by bringing 20–30% of their field labor hours into the prefabrication shop; however, this statement may not convince some electrical contractors. These contractors may not consider adopting prefabrication since they are more comfortable with conventional methods. The extra effort spent on planning and constructability coordination with other trades may dampen their motivation to pursue prefabrication on their projects. This paper presents a case study of an electrical contractor who recently adopted prefabrication for an office building project. Data were collected to quantify the probable benefits of prefabrication in building electrical construction. The actual man hours spent on the project—as a result of using prefabrication—were compared with the original estimation based on conventional electrical construction methods. In addition, the researchers performed work sampling on electrical workers; the results were compared with conventional methods. The results showed 9% productivity improvement and 16.7% savings in work-hour as a result of using prefabrication.
A Case Study of Productivity Improvement by Electrical Prefabrication
Prefabrication is believed to improve construction labor productivity by increasing direct work rates and reducing rework and onsite injuries. Anecdotal evidence shows that electrical contractors are able to improve their average labor productivity by 30% by bringing 20–30% of their field labor hours into the prefabrication shop; however, this statement may not convince some electrical contractors. These contractors may not consider adopting prefabrication since they are more comfortable with conventional methods. The extra effort spent on planning and constructability coordination with other trades may dampen their motivation to pursue prefabrication on their projects. This paper presents a case study of an electrical contractor who recently adopted prefabrication for an office building project. Data were collected to quantify the probable benefits of prefabrication in building electrical construction. The actual man hours spent on the project—as a result of using prefabrication—were compared with the original estimation based on conventional electrical construction methods. In addition, the researchers performed work sampling on electrical workers; the results were compared with conventional methods. The results showed 9% productivity improvement and 16.7% savings in work-hour as a result of using prefabrication.
A Case Study of Productivity Improvement by Electrical Prefabrication
Khaleghian, Hossein (author) / Shan, Yongwei (author) / Lewis, Phil (author)
Construction Research Congress 2016 ; 2016 ; San Juan, Puerto Rico
Construction Research Congress 2016 ; 1753-1761
2016-05-24
Conference paper
Electronic Resource
English
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