| Title |
Analysis of Productivity Impeding Factors and Suggestion of Countermeasures in Small and Medium-Sized Construction Project through Modified Delphi Survey |
| Authors |
홍영록(Hong, Rong-Lu) ; 임정호(Lim, Jeong-Ho) ; 장재호(Jang, Jae-Ho) ; 김주형(Kim, Ju-Hyung) ; 이경태(Lee, Kyung-Tae) |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.1.323 |
| Keywords |
Small and medium-sized construction project; Focus Group Interviews; Modified Delphi survey; Productivity |
| Abstract |
Small and medium-sized construction projects account for the absolute majority of construction projects in Korea and contribute greatly to the
national economic development. However, there is a lack of awareness of productivity in small and medium-sized projects, resulting in a
number of economic losses or safety problems. Therefore, it is necessary to identify major factors and causes that hinder productivity during
construction and to suggest measures to improve productivity. This study established a classification system for factors impeding productivity
through systematic literature review and Focus group interview as preliminary investigation. Through a two rounds of Modified Delphi
method, the lack of worker responsibility, irresponsible drawing plan that ignore site conditions and construction ability, excessive design
changes, incorrect work plan, interference between tasks due to urgent works, lack of safety issues were chosen as major factors impeding
productivity. As a result of conducting interviews with experts to derive the cause of the factors and improvement measures, it was found
that insincere manpower and incorrect design and construction plan in the initial stage impeded productivity severe. Consequently, vocational
education for workers, introduction of modified cost calculation methods for small and medium-sized construction, and the active introduction
of smart technology need to be conducted to improve productivity in small and medium-sized construction projects. This provides a
theoretical basis for future research on the productivity of small and medium-sized construction projects and suggests solutions to the future
crisis facing small and medium-sized construction companies. |