WORK BREAKDOWN STRUCTURE IN PROJECT MANAGEMENT WITH SOFT LOGICS

This paper presents a Work Breakdown Structure (WBS) based model for repetitive projects when considering soft logic. Previous researches are based on the assumption that work sequence cannot be changed for different work zones. In reality, work sequence between work zones are not fixed (actually, constantly adjusted) throughout the project. Instead, they are often changed to shorten the construction time and minimize the total cost. Scheduling with the non-fixed work sequences between work zones is known as the soft logic method. Considering the soft logic in repetitive projects, the proposed WBS model aims to assist the project team to find the minimum overall cost subjecting to different output rates and logical sequences. The software used in this work is Oracle Primavera P6. Unlike some scheduling software programs that are somewhat of a bottom-up approach, Primavera P6 encourages to create a WBS at the beginning of the project. With the help of soft logic consideration in work breakdown structure of repetitive construction projects the site working team can find the after effect of change in work pattern through various sequence of the proposed work. Primavera P6 software makes it easier to apply that change and also to track the overall progress of the work. Final result clearly shows that planning the work in different pattern, before execution, will help the project manager to select an optimum sequence of work breakdown structure.