CASE STUDY OF BIM APPLICATION ON CONSTRUCTION MANAGEMENT CENTRAL LIBRARY OF NEW TAIPEI CITY

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1 Proceeding the 6th Civil Engineering Conference in Asia Region: Embracing the Future through Sustainability ISBN CASE STUDY OF BIM APPLICATION ON CONSTRUCTION MANAGEMENT CENTRAL LIBRARY OF NEW TAIPEI CITY Richard Jen-Chuen Moh 1, Szu-Min Kang 2, and Yi-Ming Chen 3 1 Senior Vice President: Moh and Associates, Inc., Richard.moh@maaconsultants.com 2 BIM Manager: Moh and Associates, Inc., Sm.kang@maaconsultants.com 3 BIM Engineer: Moh and Associates, Inc., Vincent.chen@maaconsultants.com ABSTRACT With maturing of Building Information Modelling (BIM) technology development, it makes the project management and operation more efficient compared with the previous procedures. BIM provides the opportunity to store data efficiently and integrate the building information among architects, structure engineers and electrical & mechanical engineers under a single 3D digital model. All discipline sectors have abundant information within various stages, including design stage, construction stage, and operation stage. Besides, engineers are capable of using this technology to maintain further the creative ideas, project execution experience, and user-demand applications further. Therefore, BIM is not only a brand-new 3D Computer-Aided Design methodology but also a revolution for the workflow of engineering field. In this application, BIM MGMT. & ENGR. Integration Center of Moh and Associates, Inc. (MAA BIM Center) applied BIM technology to assist and integrate this on-going project, the new construction of Central Library of New Taipei City. First of all, BIM engineers built the library models separately from various design CADs, including architectural, structural, mechanical, electric, and plumbing designs. By using BIM technology, all building information of library is integrated into a single BIM model. In the past experience, there were many problems and collisions among different professional domains. In order to solve those problems and collisions, contractors/owners wasted a lot of time and money during construction stage. Fortunately, with the assistance of unique BIM model collision detection, the contractor can realize the problems clearly and detect collisions rapidly in advance before construction. Over and above the collision detection, BIM model can also produce relevant shop drawings and Bill of Quantity before starting site construction. Secondly, BIM engineers participate in the site meetings to report all drawing problems by using BIM model and revise the BIM model according to the actual library building on site. Besides, BIM model can simulate the construction procedure according to the project schedule. In order to manage and integrate all the design documents and BIM models, the BIM collaborative platform is applied for all engineers and contractors in this case; furthermore, the owner and relevant consultant can communicate with each other and transfer documents, engineering data, drawings, and even BIM models on the same platform. Thirdly, BIM facility management (FM) is another important subject for library operation, especially for spatial and equipment management. The BIM model contained plentiful data resources about building, but they cannot be managed well for FM by using model data only. Fortunately, 6d Facility Automatic Management System (6dFAMS) can import the BIM models into BIM Database, which can store and regulate building information. 6dFAMS provides powerful functional modules, including 3D BIM Query, Spatial Query, Management of Equipment Maintenance, and Accounts Access Controller. Moreover, 6dFAMS adopts Object-Oriented Modules and customized program interface to meet the needs of the BIM FM system for Central Library of New Taipei City. In the evaluation of life cycle cost of the building, BIM technology combines the engineering workflow and information from planning, design, construction, and operation stages. Especially during construction stage, BIM collision detection can reduce the wastage of engineering cost in advance and well perform the engineering project on schedule. Additionally, BIM collaborative platform completes the construction management and improves the engineering information exchange. Eventually, the application of 6dFAMS and conservation of BIM model would assist the operator in the maintenance of building and extend the life cycle of the building. Keywords: BIM, Collaborative platform, Facility Management, 6dFAMS.

2 CENTRAL LIBRARY OF NEW TAIPEI CITY INTRODUCTION The central library of new Taipei City is a 10FL aboveground and 3FL underground RC building, and the construction began in September, The total floor area is over m 2, and engineering budget is more than 28 million US dollar. During construction stage, there are many problems and conflictions between architecture, structure, and MEP (Mechanical, Electrical, and Plumbing). In the past, it is difficult to find out those items from 2D drawings, and those issues always cause a lot of extra time and money. Moreover, during the new construction, owner and project manager need to control the site schedule and budget, even without working on the construction site. With the changes of working drawings, it is necessary to transfer data and files in time and to obtain the right edition drawings among professional engineers. Unfortunately, those new design and changes might generate the new clash and problems - which cannot easily be perceived from 2D drawings as well. As the center library of New Taipei City is completed, maintenance and effective operation will become another important subject to the library. BIM on Construction Management In this case, BIM MGMT. & ENGR. Integration Center of Moh and Associates, Inc. (MAA BIM Center) provides BIM service to assist and manage the new construction. MAA BIM Center offers the clash detections among architecture, structure, and MEP. With BIM technology, contractors can evaluate the quantity computation for the project and balance the budget. Besides, BIM models can present the clashes before the construction when the change of design drawings and site occurs, which can help project manager and owner to control effectively engineering schedule and budget. By the BIM collaborative platform, all engineers and contractors can transfer the drawings, data, information, and even BIM models. Application of ipad and internet, the BIM models can present the realistic situations clearly to workers and engineers on site. Furthermore, the completive BIM models contain abundant building information and will be the perfect tool to maintain and operate the library with 3D visual models. However, it is difficult to regulate the building and facility information from a BIM file, especially there are many linked file between BIM models. MAA BIM Center would suggest the use of 6dFAMS to transfer BIM models into the BIM database to manage and operate the library effectively. Fig. 1: BIM model Fig. 2: Clash reports First of all, BIM engineers build the BIM models separately according to the shop drawings, including CSD (Combined Service Drawings) and SEM (Structure, Electricity and Mechanical Engineering). To meet the construction needs, BIM LOD (Level of development) 200, 300 can be used for the architectural, structural, and MEP BIM models (Fig.1). Besides, MAA BIM engineers apply the Autodesk REVIT 2013 as the BIM modelling software and use Navisworks Manage 2013 as the clash detective tool. TS3-65

3 The main BIM models contain outside walls, internal walls, columns, beams, plates, doors, windows, etc. Before construction, MAA BIM center can build professional BIM models to provide the clash reports (Fig.2) for architects, civil engineering, mechanical engineering, fire protection, air conditioning, water supply and drainage, pipelines, and so on. In the BIM detective documents, MAA BIM engineers would use AR-STR (means the clash of architecture and structure), STR-MEP (means the clash of structure and MEP), MEP (means the clash among the five main pipeline system), dxxx (means the dimension problems for the drawings), mxxx (means miss and mistake for the engineering drawings), and so on. According to the BIM clash reports, design consultants can revise and update the original design and provide more detail of drawings. Contractors can avoid wrong information and reduce the waste of money when they acquire precise design and more details of drawings. Besides, contractors would obtain the revised BIM information in advance provided by the BIM center during the construction stage. In the cycle of BIM application (Fig.3), MAA BIM engineers would follow the revised drawings and amend the BIM models to detect the new clash at construction stage and to effectively improve the contractors engineering schedule and cost control. Fig. 3: Cycle of BIM application Fig. 4: Quantity computation In addition to the clash detection, MAA BIM engineers can produce the quantity computation (Fig. 4) of this project from the BIM models. The precise quantity computation can help the contractors to evaluate the engineering schedule and control the budget. Besides, MAA BIM engineers can apply BIM technology to simulate the construction as per the site schedule (Fig. 5). The project manager can arrange the right quantity of materials at the right moment via BIM reference report. With the assistance of MAA BIM Center, the project managers and contractors can regulate schedule and control the budget by using revised design, sufficient shop drawings, and simulated construction. However, a successful engineering construction does not just depend on the drawings or models. More importantly, professional communication and information sharing would tremendously affect the project schedule and budget. BIM Collaborative Platform There are many problems and issues happening from the communication and information sharing (Fig. 6). Moreover, the owner and project managers would like to trace and possess the construction project without being on the construction site. In view of this fact, a friendly collaborative platform would enhance the project management and construction process. TS3-66

4 Fig. 5: Simulation of construction Fig. 6: Engineering communication In this case, MAA BIM Center applied the Autodesk 360 as the BIM collaborative platform (Fig.7) to match the BIM application softwares, such as Autodesk REVIT 2013 and Navisworks By using Internet, the owner, project construction management (PCM), designers, and contractors can log in the BIM collaborative platform and obtain the progress reports, revised drawings, suggestions, and clash detective documents (Fig. 8). During construction stage, BIM collaborative platform can not only add the convenient communication immediately, but also reduce the waste of paper and time. In order to make engineering collaboration on the BIM collaborative platform more effective during the construction stage, MAA BIM center suggests some procedures for this project as follows. STEP 1: In the initial stage of construction, BIM engineers should create accounts on the BIM collaborative platform, such as Autodesk 360, and define the authorities for different users. For example, Fig. 7: BIM collaborative platform Fig. 8: Framework on platform contractors should get permission to upload files and data, and have no right to make comments. BIM engineers should realize the framework of engineering and clarify the relationships between all participants in this project. Sometimes, the authorities are defined case by case. TS3-67

5 STEP 2: Workflow and framework of BIM collaborative platform should be decided by the contracts and meetings. All participants should understand and agree with the workflow and framework. In this project, BIM working group was organized by the contracts and group members included PCM, designer, contractor, subcontractor, and MAA BIM center. To perform the construction management effectively on the BIM collaborative platform, BIM working group closed one issue by one week. For instance, MAA BIM engineers present the clash detective document on Friday, and other contractors, design team should preview or respond the issue before next Friday. All file and information will be recorded when they are downloaded and open on the BIM collaborative platform. Besides, the owner will irregularly check and examine the results of the issues on the platform. STEP 3: Management of engineering information and files would be another primary point for the construction management. In this case, MAA BIM center separates two areas on the Autodesk 360, i.e. working area and storage area. The BIM working group can check and examine the file and information in the working area, including the BIM models, shop drawings, clash detective documents, etc. All BIM working members can transfer and communicate in the working area. After revise and review, all confirm information and files would be stored in the storage area. The owners and supervisors would search and find all project reports and BIM models in the storage area. STEP 4: Education and training of BIM collaborative platform is necessary and important. In addition to platform, all participants should learn how to work and use the BIM related softwares (Tab.1). The content of education would be different according to the different units in the Table 1. In this case, MAA BIM center arranged two stages for the training of BIM related softwares. The owner, PCM, and supervisors would study how to upload/ download/ manage files on the Autodesk 360 in the first stage. Besides, they should learn to browse/ revise/ examine the drawings with AutoCAD WS and to browse/ simulate the BIM integrated models with Navisworks Freedom. In the second stage, MAA BIM center train the contractors and sub-contractors not only how to use Autodesk 360, AutoCAD WS, and Navisworks Freedom, but also how to revise BIM models (including structure, architecture, and MEP) and label. Tab. 1: BIM related softwares BIM Facility Management In the cycle of building life, BIM technology can be applied in any stage of the building life, including plan/design, detailed design, construction/building, and operation/maintenance (Fig. 9). By using BIM technology, all information of the building can be collected and coherent from planning phase to operation phase. Although the construction cost of the building is expensive in the very beginning, the cost and time are more complicated and duration is longer during the operation/maintenance phase, especially for the public buildings. If a building can exist over 50 years, the consummate management for TS3-68

6 maintenance of the building would effectively reduce fee and manpower. Besides cost, operators can analyse and decide the maintenance plan by the maintenance records and reports. For example, the operators would find out and consider which product brand is better for the light and how much next-year budget for maintenance of light is to be prepared by reading the maintenance reports and analysis (Fig.10). Fig. 9: BIM in the cycle of building life Facility management (FM) has been developed for more than 20 years, and many management softwares had been introduced to the owners/contractors to assist in the paper work in recent years. It took a lot of time to rebuild all 2D building maps and locations of facility in the system after construction, and no one can confirm the data from shop drawings. Hence, the information might just link to the maintenance record and it is hard to change the engineering drawings when the changes are from interior decoration. As time passes, those facility management systems became unreliable and problems for repair workers and operators. Fig. 10: Maintenance reports and analysis In the new construction of library, BIM technology is applied to integrate and manage the engineering data of the public building. It is suitable for owner to extend the BIM models into the library operation when the construction would be completed. According to the contracts and conferences, MAA BIM engineers proposed the BIM facility management systems for two future operation departments, Library Affairs Dept. and Traffic Authority. Besides, BIM engineers suggest the management items and how to operate the library. For instance, MAA BIM engineers design and build the parking lots information from shop drawings and operation necessaries (Fig. 11). TS3-69

7 Fig. 11: Two operation departments and parking information The advantages of BIM facility management include that all building information is built from shop drawings during the construction stage to reduce the rebuild cost and to increase the accuracy for the management system. However, it is difficult to manage the information in the BIM models during operation stage, specially the maintenance schedule and spatial management. The best way to realize the BIM facility management system is the database system with BIM models. In the study of MAA BIM center, engineers adopt 6d facility automatic management system (6dFAMS) to transfer the BIM models into the database and to customize the system interface. The workflow of BIM facility management system should be the following steps (Fig. 12). STEP 1: BIM models would be the first work for the BIM facility management, but these BIM models contain too much the engineering data from shop drawings during construction. It is important to clear up the engineering BIM models and to add more facilities with information based on the operators necessaries. STEP 2: The engineering BIM models contain few operation and facility information. Except facility information, the operation schedule and maintenance process are significant and different from case to case during the operation stage. How to integrate the original process of management and combine the BIM models would be another key point. STEP 3: The proper BIM models combine the sufficient facility information to the BIM facility models. However, it is difficult for BIM facility models to involve the spatial operation and repair program. In the experience of MAA BIM Center, it is necessary to transfer the BIM models and related programs into the database by 6dFAMS. STEP 4: The successful BIM facility management system depends on the friendly interface. Moreover, the BIM facility management system should be customized according to the requirement and process of the operators and managers. To match the administrative processes of government, customized forms and reports would be produced in the BIM facility management system. TS3-70

8 CONCLUSION Fig. 12: Workflow of BIM facility management system BIM technology has been developed rapidly in the recent years, but it is always respectively adopted in different stages of the building life. In fact, BIM not only can collect and build the professional models, but also can detect the clash among the civil, architecture, structure, and MEP before real construction. Additionally, BIM is a powerful 3D technology to assist the communication among different discipline sectors. Through the BIM integration and collection, the owners and managers can manage engineering schedule, and even extend BIM models to facility management. In the study of this construction project, BIM application on construction management can contain several important functions and solutions. First of all, engineers can improve the communication with the visual 3D models and increase the precision of quantity computation of BIM. Secondly, the contractors can reduce the waste of money and time by applying the clash detection function from BIM. The owners, managers, and engineers can control and communicate site problems anywhere by using BIM collaborative platform. Finally, the completion BIM models can be extended and applied to the facility management. BIM seems perfect and invincible, but more detailed modelling takes more time and manpower to prepare. As a result, too much detail of BIM models always cause computer lag and crash. How to balance suitable information and computer system will be the principal issue on BIM technology in the future. REFERENCES Chen, Y.M., Kang, S.M. (2012). Application of BIM Collaborative Platform on Engineering. The Hong Kong Institution of Engineers, HK, November, pp Kang, S.M., Kuo, E., Chen, Y.M. (2012). Engineering Collaboration and Applications of Building Information Modelling. Department of Rapid Transit Systems, TCG, Taiwan, December, Vol.47 Kang, S.M., Yang, N.T. (2011). Application of BIM on Design of MRT. Chinese Institute of Engineers, Taiwan, August, Vol.84:4, pp TS3-71