A Study on the improvement of working condition in the downtown Underground construction - Focused on the Ventilation and Lighting -

지하건설공사의 작업환경 개선에 관한 연구 -환기와 조명을 중심으로-

According to the construction environmental changes due to the trend of large scale and complicated building construction, many construction methods(such as : TOPDOWN )are more often used. However, it is pointed out that occupational pulmonary diseases, reduction of the machinery lifetime and productivity caused to be narrow visual field and collision between the workers. Therefore, this study is mainly dealing with the views of productivity and safety improvement in order to improve work efficiency and to insure the safety in underground construction environment.