효과적인 라스트 플래너 운용을 위한 작업제약요건에 관한 연구

The object of construction project management is to achieve planned quality by adequate cost and schedule of the project, thus the effective time management is a critical factor to actualize the object. But the traditional time management by using milestone has several limitations which are not sufficiently considered mutual relation and variated from the task. In other words, applying the concept and principles of Lean Construction to the project shall be the best way to not only reduce waste and variation, but also improve the productivity and ability to overcome limitation as mentioned above. Thus, this study proposes specific and systematic time management through introduction of management method of lean construction. The study, Last Planner System, specially focuses on constraint analysis which is used in Lookahead planning system. Consequently, this study presents constraint analysis able to improve reliability of work and Percent Plan Complete by controlling major factors of project before the planning phase.