Open BIM vs Closed BIM: Making the Smart Choice for Complex Projects

When comparing Open BIM against the Closed BIM methodology, it clearly shows that each of them has its own place in the industry. Open BIM and Closed BIM services are actually two sides of the same coin. It is not about which one to pick but how to balance between specialized software applications and professional collaboration. With teams often divided into Open BIM vs Closed BIM priorities and objectives, the discussion has become more prominent. It now focuses on ensuring the highest returns on the project.

Open BIM makes use of vendor-neutral standards such as IFC and BCF. With Open BIM teams can access different software. It supports the process that is ideal for large and complex projects where several stakeholders may be involved. Closed BIM, in contrast, utilizes a single-vendor ecosystem such as Autodesk Revit. The proprietary software underpinning Closed BIM guarantees higher data security and process integrity.

What is Open BIM?

Open BIM refers to the Building Information Modeling approach that seeks to embrace open standards and formats. This is because the standards employed in Open BIM are neutral to vendors. This implies that people can exchange information without limits through the use of OpenBIM tools. The Industry Foundation Classes (IFC) is a standardized digital description of the built asset industry, serving as a key Open BIM standard for data sharing.

Open BIM allows project teams to openly collaborate with greater transparency of operations and accessibility of BIM data. It also allows long-term usability of project information. With the help of Open BIM models, project participants can use different tools and still collaborate within a unified project model in close tandem.

What is Closed BIM?

Closed BIM operates within a single-vendor ecosystem, supported by a specific technology environment. All members involved in the project have to operate within that system and use tools that are compatible with that environment.

Closed BIM allows teams to work on a centralized model built on a certain technological ecosystem or software family. In most of the cases it has negligible or limited support for interoperability with external tools. Closed BIM formats have a strong dependency on specific vendors and resources. This modeling methodology operates within controlled environments that support streamlined practices at length.

Open BIM vs. Closed BIM: Key Points Of Differentiation

Mentioned below are the major points of differentiation between Open BIM and Closed BIM:

Data Restrictions

In an Open BIM workflow teams can easily export project files in different formats. These files can then be used in various applications without losing quality. However, Closed BIM restricts data to the native format of the specific software that is used to create it.

User Collaboration

Closed BIM only allows collaboration among users who belong to the same system. This makes it impossible to share information with external systems. On the other hand, Open BIM stresses open working procedures, while Closed BIM creates data silos.

Data Accuracy

When seamless coordination and data accuracy are crucial for a project, then Closed BIM would be more favorable. The closed BIM system usually uses software from one particular vendor. When seamless cooperation between remote teams is important, then Open BIM becomes a better choice. Which means operational flexibility is more important than other aspects of production in Open BIM.

Interoperability

OpenBIM promotes interoperability and collaboration among project stakeholders by using neutral, non-proprietary file formats, while closedBIM is often referred to as 'lonely BIM' due to its reliance on proprietary formats that limit collaboration.

Long-term Accessibility

Open BIM supports long-term lifecycle projects where data must remain accessible years later, independent of proprietary software updates. However, Closed BIM is more focused on minimizing risk and data loss, which makes it limit open access.

Risk Management

Closed BIM may help avoid problems related to technology since all individuals work with the same program. This makes the risk of misunderstandings during the transfer of files unlikely. High-security environments may favor Closed BIM for tight control and security within a restricted proprietary system. Open BIM can only provide a limited shield against external risk, as it supports open sharing and collaboration before anything else.

Key Factors to Consider When Choosing

When deciding between Open BIM and Closed BIM, these are the key factors to consider:

Project Complexity

Open BIM supports dynamic workflow and improved collaboration between project members. Therefore, the higher the project complexity, the better it is to use Open BIM. Also, Open BIM deploys open and neutral standards for all stakeholders and keeps the communication process agile and responsive to deal with complex projects.

Stakeholder Diversity

When there is a large number of stakeholders involved in the process, the system needs to support interoperability at length. Additionally, this is important for ensuring the seamless flow of data and operational compliance through a centralized built environment.

Model Data Consistency

When the BIM model requires dealing with sensitive multi-dimensional data, Closed BIM better supports such requirements. The closed methodology operates within a restricted system environment employing a family of software tools to ensure data quality and consistency at all levels and phases of the construction project.

Cost and Licensing

Open BIM is more cost-effective than closed BIM, as there are no upfront proprietary license fees involved. However, there are higher setup and enablement costs involved in an Open BIM solution. For a project that can arrange resources better and can work on different software tools, it's better to go with Open BIM.

Specialized Teams

If the project requires dealing with varied and complex requirements, it needs specialized expertise. A Closed BIM team with in-depth software knowledge can best handle it. Besides, specialized closed-format teams not only ensure a consistent approach and efficient delivery but also secure data management.

To Conclude

The choice of going with Open BIM or Closed BIM should not merely be considered from a technical standpoint but rather a strategic one.

Opt for Open BIM if you need collaboration, scalability, and longevity of your data. Alternatively, go with Closed BIM if you require quick results, control, and simplicity of the process.

When it comes to complex projects, the choice should clearly lie in favor of Open BIM due to the advantages that it provides. However, the optimal BIM strategy could be combining both approaches and knowing when to apply each one.

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