수정 델파이 조사를 활용한 중·소규모 건설공사 생산성 저해 요인 분석 및 대응 방안 제시

초록

Small and medium-sized construction projects account for the absolute majority of construction projects in Korea and contribute greatly to thenational economic development. However, there is a lack of awareness of productivity in small and medium-sized projects, resulting in anumber of economic losses or safety problems. Therefore, it is necessary to identify major factors and causes that hinder productivity duringconstruction and to suggest measures to improve productivity. This study established a classification system for factors impeding productivitythrough systematic literature review and Focus group interview as preliminary investigation. Through a two rounds of Modified Delphimethod, the lack of worker responsibility, irresponsible drawing plan that ignore site conditions and construction ability, excessive designchanges, incorrect work plan, interference between tasks due to urgent works, lack of safety issues were chosen as major factors impedingproductivity. As a result of conducting interviews with experts to derive the cause of the factors and improvement measures, it was foundthat insincere manpower and incorrect design and construction plan in the initial stage impeded productivity severe. Consequently, vocationaleducation for workers, introduction of modified cost calculation methods for small and medium-sized construction, and the active introductionof smart technology need to be conducted to improve productivity in small and medium-sized construction projects. This provides atheoretical basis for future research on the productivity of small and medium-sized construction projects and suggests solutions to the futurecrisis facing small and medium-sized construction companies.

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