In the early years of the 1970s, a new technology trend with the term Building Information Modeling (BIM) appeared in the construction industry, which integrates non-geometric information of buildings into tissues. hologram (3D) to create an internal database, making it easier to synthesize, analyze and transmit relevant information during the construction and operation of the facility. Many different BIM definitions around the world. However, the most common way to understand BIM is the process of creating and using digital information models for the tasks from design, construction to the operation management process. BIM is not confined in the sense that it is merely to create a three-dimensional (3D) perspective of the building after the design is completed and only serve the design phase where BIM is also a source for storage and supply. information as a basis for making management and management decisions throughout the life of the construction work, from design, construction to operational management due to the ability to integrate ministries' information. construction parts with information about norms, unit prices, construction schedule, operation and maintenance requirements, etc.BIM's progress over the old technologies is instead of using the following designs. In 2D and BIM format, 3D technology is used (length, width, height). From the three-dimensional perspective (3D) of the building and other integrated elements, create 4D BIM, 5D BIM, 6D BIM, ..., specifically: integrating more information about time, progress degree (4D BIM) for making progress, construction plan, providing resources for construction works; integrate more information on costs and costs (5D BIM) used to manage, control costs and build plans, manage capital for the project; integrating more information on construction operation management (6D BIM), ...
BIM application in construction investment projects brings many benefits to investors, consultancy contractors, construction contractors and state management agencies in charge of construction.
Applying BIM in construction activities contributes to fulfilling the Government's goals in improving the quality and efficiency of the construction investment process, saving resources, reducing wastefulness for society, using effectively use and manage urban resources: land fund, urban technical infrastructure, static traffic systems, trees,... + Through the project information model, the state management agencies in charge of construction and urban management have a general and specific overview of the suitability of the planning, the architecture of the works, the connection of the lower city. technical floor, ... to serve the process of design evaluation, planning approval, architectural plan, construction permit, ...; + The application of BIM in design evaluation, planning approval, architectural options, construction permits help: reduce wasted time and paperwork in the process of preparing the submission dossier; simplify the archival of construction works and projects records; reduce time to research and approve licensing documents; serve effectively the inspection and examination of construction works because the information of the works is presented logically, fully and visually.
+ BIM provides a visual view, very good support in the process of selecting investment plans, design options, determining capital plans in line with the deployment plan and the capacity of the investor; making it easy for investors to review and make decisions on the basis of information provided from the model; + The application of BIM helps minimize downtime for handling unintended conflicts (stemming from design errors or from inconsistencies between design and construction) and thereby contributing to reducing waste, cost savings for the project; + BIM is used effectively in planning, operating reports, analyzing and reporting the use of space, optimizing operating costs.
+ BIM facilitates the presentation, evaluation and selection of effective design solutions through visual 3D model images; + The application of BIM contributes to increase productivity, design quality, facilitate adjustment in the design and limit errors in the implementation process: due to the simultaneous coordination of the above design subjects. As a single model, the design information is displayed visually so using BIM will increase design quality, significantly reduce conflicts between office design and field execution. If designs are made through BIM when there is adjustment in one design department, the changed information will be displayed on that object in another design department, so that the design adjustment can be done quickly; + The work of measuring and peeling off the volume and estimating the cost of the work is done automatically and quickly. The use of the building information model in 3D, together with the price database, continuously updated unit price will significantly shorten the determination of construction costs. This utility is especially meaningful during the design phase of the project, when the designs are often changed, investors need information related to costs quickly to make timely decisions. choose the optimal plan; + Advantages in analyzing the energy use level of the design options, through supporting tools, contributing to the direction of environmentally sustainable design. The integrated information in BIM allows designers to calculate the power use needs of the design plan through tools that can integrate green design standards such as LEED or LOTUS, etc. evaluation of energy efficiency and "sustainability" of the building. From there, it is possible to adjust the design plan to be more effective so that it can save time and cost for the project; + The application of BIM process in design consulting enterprises will gradually create a teamwork style, build a professional working environment in the direction of modernization and international integration.
+ BIM provides tools to comprehensively plan and improve the management and management ability for the whole project life cycle at advanced technology level; + BIM provides the project management board with a visual model along with integrated elements such as construction schedule, labor chart, work price development chart, etc. to help the management board implement. easy and well-prepared work on capital mobilization, human resource monitoring or off-site construction plans, cost control during implementation; + BIM is the basis for the Project Management Board to coordinate the project implementation coordination between contractors and related units; Help handle and anticipate situations that may occur at the site.
+ BIM is used as a basis for contractors to build construction plans, allocate resources, coordinate work in different construction stages to optimize the contractor's use of resources, increase capacity. labor productivity, cost savings and shorten construction time; + BIM helps construction contractors to limit errors in the implementation of design drawings to implementation organizations; + The application of BIM helps contractors detect and anticipate difficulties during the construction process right from the stage of approaching design documents to make appropriate implementation plans. This is especially necessary for projects with difficult construction conditions or high technical requirements. Based on the visualization of the BIM model and fully integrated information, the "conflicts" between structures or between construction parts are clearly displayed on the model, from which engineers can work out. Appropriate measures to resolve those "conflicts". + BIM is capable of providing reliable information about types of materials, construction components at the design stage such as volume, specifications, shapes and properties. Such information can be used flexibly for the provision of construction components and materials.
+ Using the Construction Information Model to simplify the handover of documents, drawings and information related to the project. During the construction process, the main contractor and especially the electromechanical contractor have integrated more information on materials, installation equipment, maintenance mode for the project. This information is linked to each object in the building model which is handed over to the investor and will be used to check all systems and parts of the project during the operation management. + BIM can be integrated with real-time management, monitoring and control systems for remote device management and many other application capabilities are continuously being improved and developed.