Building Information Modeling

  • By
  • March 6, 2020
  • AutoCAD
Building Information Modeling

Building Information Modeling

If you are working in the field of Architecture, Civil or MEP, you often have come across the term “BIM”. What does BIM mean? BIM stands for Building Information Modeling. Many people often get confused with BIM and 3D modeling. BIM is not 3D. 

  • 3D modeling is the process of designing the physical model of the building.
  • It is the process of creating the appearance of the actual structure of the building.
  • The 3D model is used for visualization purposes.
  • It helps to understand how the model will look when it is actually constructed.
  • Building Information Modeling, on the other hand, is different from 3D modeling. Building Information Modeling includes 3D Modeling in it but it has a lot more to offer.
  • Building Information Modeling contains information in the form of “Digital representation” of a Building.
  • It provides information like the Physical and functional properties as well as characteristics of the Building
  • Building Information Modeling is not just building physical appearance.
  • It contains information about every component that goes into the building project.

In this blog, I’ll explain what exactly BIM is? And how it is different from 3D Modeling?

In this series of blogs on “Building Modeling”, I will be providing insight into BIM and background on the most commonly used terms and processes in construction. It does not matter whether you’re new to BIM and just beginning to use it on your projects or you have some previous experience and want to expand your knowledge for the future. In this post, I’ll explore the past, present, and future of BIM. From beginner to expert professional, we will learn BIM with a thorough and refreshed understanding of the concept. You will also get a better idea of how you can implement or enhance this technology on your next job.

We will also see some of the tools available for BIM and what are the advantages that we have while using BIM over the conventional designing and planning process.

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What is BIM?

BIM is a lot more than just three letters. Building Information modeling involves data in the building’s specification as well as the functional properties of each component. It does not refer to just one method or set of tools and technology. It is a vast process of planning, designing, and execution of the Building project. It includes the use of a variety of software like AutoCAD, Revit Architecture and MEP which can be used to benefit each and every stage of construction when utilized before the construction begins. Also, this data can be used to set up the project’s base or foundation to ensure a successful start in design. The data can benefit all disciplines like Architecture, Civil Engineers, Mechanical Engineers, Electrical Engineers, and Piping Professionals also. This is a strong platform that helps the AEC- Architectural, Engineering and Construction Professionals to work in collaboration with each other. This technology is so effective that according to a survey done by the “National Building Specification (NBS)”, 78% of AEC Professionals see BIM as the future of project information.

Building information modeling is a process of creating a digital representation of a construction project’s functional and physical characteristics. It also provides a way for sharing information to all the disciplines working in collaboration that can be used to make decisions throughout a building’s lifecycle. BIM includes the use of software to generate and manage data and information on a Building, often in a proprietary format. BIM is been already in use by many organizations today, in the form of some software to plan, design and constructs a variety of facilities from commercial to healthcare and education to industrial.

A Building’s design team uses BIM to create a virtual model of the Building, which in turn, is reviewed by the owner and handed off to contractors and subcontractors for construction once finalized. Even beyond construction, BIM models can be turned over to the Building’s operators, who will conduct its daily maintenance and operations (O&M). Each of these parties may add data to the BIM model that’s specific to their discipline, reducing the loss of information that often occurs when a new team takes ownership of a structure.

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How Is BIM Different from Traditional Modeling Method?

The traditional modeling Method depends on 2D drawings for references for designing buildings. BIM uses at least three spatial dimensions, which include depth, height, and width. Now advanced BIM plans are also likely to include additional dimensions like time and cost. These properties allow construction characteristics and details in BIM to cover relationships between components as well as other parameters such as lighting, geography, and details of building components.

BIM is made of a combination of objects, which can be defined as a variety of degrees of detail. Software tools help users to create different views from BIM plans and they are automatically connected with each other since they are based on a single definition for each object. BIM software always defines objects with their parameters. These objects are related to other objects which allow the software to automatically change dependent objects when the user changes a related object. In turn, this provides a real and accurate visualization of construction and design data. BIM also provides estimations and materials with the right applications and integrations.

Who Uses BIM?

BIM is being used largely on the design front but its usage is becoming more valuable for a wide range of roles day by day. Now the use of BIM expands beyond design. Nowadays in the construction field, teams are increasingly pressured to complete projects with short schedules, limited manpower, and tight budgets. The different disciplines in the field of construction must coordinate their activities carefully and in coordination with each other since they are usually performed one at a time. BIM helps to detect clashes between components and objects before they bring a project to a complete stop. This helps to foresee conflicts and avoid unnecessary delays in the project. 

As I mentioned earlier, BIM is also being increasingly utilized by facilities teams. With detailed visualizations of the inner workings and data of the buildings they are managing, they are empowered to make better decisions to save money in the long term.

Clearly, Building Information Modeling’s purpose is now extended across a wide range of disciplines in design, construction, and operations. If you are interested in learning how BIM affects various construction roles including architects, engineers, owners, general contractors, subcontractors and more? You can go through my upcoming blogs in this series. We here at SevenMentor cover all the essentials related to AutoCAD Training in Pune. Also, you can learn Revit through our classroom training for Revit and Revit MEP.

Revit for BIM

Revit is a windows based software build for Building Information Modeling platform. It allows the user to design the model with the parametric elements and drafting components. It works on the concepts of BIM and uses the 3D intelligent, parametric object-based design process to create the j model. Revit provides a complete bi-directional associativity process. Revit follows the change anywhere is a change everywhere during the designing process. So you can be sure that once you update any component in a view it will be updated in all the other views in the model.

Revit contains a single file of database which can be shared with multiple users. In Revit different views like plans, sections, elevations, schedules, and legends are all connected with each other. If anyone user changes anything in a view all the other views are automatically updated simultaneously. Also, the users with whom the database is shared will get notified about the changes. Thus the drawings and schedules in Revit are always coordinated in the building model and objects shown in the drawing.

Revit used 3D objects like Walls, Doors, Windows, Roof, and Floor to generate the base building in its workspace. With the help of these tools, the user can create their own 3D and 2D objects for modeling and drafting purposes. Revit supports AutoCAD drawing formats also which can be used to as references to create.

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When the Revit project database is shared with other users, a central database file is created which stores the master copy of the project on a server. Each user can work on a copy of the central file which is known as the local file, stored on the user’s workstation. These users save the changes to the central file to update the database with the changes, as well as to get notifications for the changes from other users. Revit constantly cross-checks with the central database file for updates. When a user starts working on any object in the database, Revit notifies if another user is editing the object. This procedure helps to prevent two people from making the same change simultaneously and avoids conflicts.

Just like BIM, Revit provides multiple disciplines for working together on the same project. It allows user to make their own project databases and link in the other consultants’ databases for verification. Revit can perform interference checking for the components, which detects whether different components of the building are overlapping or occupying the same physical space in the model.

Revit uses.RVT files for storing BIM models. Parametric objects whether 3D building objects. Components such as windows or doors or 2D drafting objects are called families. Families are saved in.RFA files, and imported into the RVT database when needed. Revit Families do not require any programming skills to operate. There are many sources to get pre-designed RFA libraries.

Services provided by Revit

  • Autodesk has developed three modules in Revit for the varying building design requirements and disciplines.
  • Architecture, used for architects and building designers.
  • Structure, used by structural and civil engineers.
  • MEP, used for mechanical, electrical and plumbing engineers.


Vijay Gujar

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One thought on “Building Information Modeling

  1. Hey, I read your blog and your information about BIM is very amazing and helpful for me.
    Thank you so much:)

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