Construction knowledge can be communicated and reused among project managers and jobsite engineers to alleviate problems on a construction jobsite and reduce the time and cost of solving problems related to constructability. This paper proposes a new methodology for the sharing of construction knowledge by using Building Information Modeling (BIM) technology. The main characteristics of BIM include illustrating 3D CAD-based presentations and keeping information in a digital format and facilitation of easy updating and transfer of information in the BIM environment. Using the BIM technology, project managers and engineers can gain knowledge related to BIM and obtain feedback provided by jobsite engineers for future reference. This study addresses the application of knowledge sharing management using BIM technology and proposes a BIM-based Knowledge Sharing Management (BIMKSM) system for project managers and engineers. The BIMKSM system is then applied in a selected case study of a construction project in Taiwan to demonstrate the effectiveness of sharing knowledge in the BIM environment. The results demonstrate that the BIMKSM system can be used as a visual BIM-based knowledge sharing management platform by utilizing the BIM technology.
Construction project control attempts to obtain real-time as-built schedule information and to eliminate project delays by effectively enhancing dynamic schedule control and management. Suitable platforms for enhancing an as-built schedule visually during the construction phase are necessary and important for general contractors. As the application of building information modeling (BIM) becomes more common, schedule management integrated with the BIM approach becomes essential to enhance visual construction management implementation for the general contractor during the construction phase. To enhance visualization of the updated as-built schedule for the general contractor, this study presents a novel system called the Construction BIM-assisted Schedule Management (ConBIM-SM) system for general contractors in Taiwan. The primary purpose of this study is to develop a web ConBIM-SM system for the general contractor to enhance visual as-built schedule information sharing and efficiency in tracking construction as-built schedule. Finally, the ConBIM-SM system is applied to a case study of a commerce building project in Taiwan to verify its efficacy and demonstrate its effectiveness during the construction phase. The advantages of the ConBIM-SM system lie in improved project control and management efficiency for general contractors, and in providing BIM-assisted as-built schedule tracking and management, to access the most current as-built schedule information through a web browser. The case study results show that the ConBIM-SM system is an effective visual as-built schedule management platform integrated with the BIM approach for general contractors in a construction project.
Abstract:In construction projects, one of the main problems in the schedule planning and control is the determination of the project schedule, especially, when the resources required are limited. Project managers or schedulers have used an estimated time to assure the completion time of either an activity or a project. However, this traditional schedule estimate, often fails in optimizing the project schedule performance, resulting in unnecessary time wastage. Dr. Goldratt proposed the Theory of Constraints (TOC) and Critical Chain, which provide the concepts for achieving effective activity duration control. Literatures show that the TOC and Critical Chain concepts are increasingly being accepted and applied in industries. The purpose of this study is to apply TOC and Critical Chain concepts in construction to manage buffers effectively in scheduling planning and control. Buffer management aims to generate a rigorous construction plan that protects against uncertainties and reduces the potential impact of construction changes. The usage of buffer management in construction schedule is to complete activities without wasting time. Finally, the study illustrates the application of Critical Chain and buffers, especially in construction scheduling planning and control to achieve shorter project duration.
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