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Open BIM Model Checker

Open BIM Model Checker


The "Open BIM Model Checker" is a software tool whose main aim is to help manage and check a virtual model to avoid future errors in the project that has been built. The program has three main features: the generation of issues, the detection of clashes and the consultation of documentation.

The program is integrated into the Open BIM workflow, which allows users to import models from projects stored on the platform and to form part of the collaborative, multidisciplinary and multi-user workflow that Open BIM technology provides.

"Open BIM Model Checker" is a free tool with the exception of the "Clash detection" feature, which needs the corresponding permission in the user license.


The "Open BIM Model Checker" works with an Open BIM project hosted on the platform, which consists of the BIM models of the different disciplines involved in the project.

With the program, users can easily inspect the project. To aid users with the inspection process of the geometric model, the program offers three viewing options:

  • View by floor
  • View by discipline models
  • View by elements

The view by discipline models and by elements can be shown in normal, transparent or wire mode, which can be included for a correct and easy inspection of the project.

Moreover, among other features, the "Open BIM Model Checker" allows users to hide or isolate elements, either individually or as a group, and view the model in colour or monochrome.


The main feature of the "Open BIM Model Checker" is the creation of issues. The issues allow users to communicate suggestions about the design, clashes between elements and errors in the model to the rest of the project participants.

The issues that are generated in "Open BIM Model Checker" (both those defined by users and those that have been selected from the automatic clash detection process) can be viewed on the platform (in the "Warnings" tab) and in the specific program involved in the correction of each issue.

New issue

"Open BIM Model Checker" allows users to mark and annotate issues detected in the model using the "New issue" command in the toolbar.

To manually create an issue, select the "New issue" button in the toolbar, and assign a title and a description. Next, indicate which elements are involved in the issue and an automatic screenshot will be generated; the position of the camera will be at where the user interface is located (this screenshot can be modified later using the "capture current view" button). To assign an issue to a member of the project, it must be assigned to one of the elements that have been created by that person, that appear in the lower box of the issue.

Once the new issue has been accepted it will appear in the list of issues. Each issue that has been created can be viewed (together with its image and description), edited, sorted and deleted in this list.

Issue reference point

Each created issue can be associated with a "reference point" (a small red dot that is placed on the 3D model). If a reference point is added, this issue and its information can be accessed from the 3D model of the project on the platform and from the 3D view of the programs involved in the issue.


"Open BIM Model Checker" also offers annotation tools that allow users to draw directly on the 3D model. Lines, arrows, ellipses and squares can be marked on the surfaces of the model and, additionally, thanks to the capture system, it is also possible to make distance, angle and surface measurement annotations.

Clash detection

The "Open BIM Model Checker" can detect clashes automatically between the different disciplines of the project, for example, between the installations and the structure, by detecting possible layout errors of an element of these disciplines (such as a plumbing pipe that collides with a column).

Although "Open BIM Model Checker" is a free tool, users must acquire the clash detection permission in their user license.

Generating clashes from a combination of files

From the "Clash detection" tab the user can create different file combinations in order to find possible clashes that could cause issues and need solving.

When a new combination is created to detect clashes, the files to be collided are chosen, for example, those of the structure and plumbing. For these files, the program offers users the possibility to choose the elements to be analysed–for example, from the structure file only the columns will be collided with the pipes from the plumbing file.

To start the clash detection process between the selected files and elements, click on the "Detect clashes" button located at the top of the "Clashes" tab.

Creating issues from the generated clashes

Once the clash detection process is completed, all clashes resulting from the file combination will be displayed in a list. Each clash can be inspected by scrolling through the list and selecting only those that are of interest to create an issue.

Issues from a clash

An issue can be created by double clicking on a clash in the list. In this way, the issue will be created in a similar way to the "New issue" command, accompanied by a screenshot of the view and allowing a title and a description to be assigned when it is created.

Issues from a combination of clashes

Multiple clashes can also be selected at once from the list to generate issues more quickly. Unlike the previous case, this option does not automatically capture the view, and the title will be assigned with the same name that appears in the list of clashes. The program allows users to edit and add more information to them later on in the "Issues" tab.

Accessing and viewing documents

Not all of the project’s errors and issues are associated with geometric errors, so it is important to have access not only to the geometric model but also to all the documentation associated with it.

From the "Documents" tab, users can access all the information associated with the IFC files exported by each discipline to the project stored on the platform. This provides greater control over all aspects of the project.

On double-clicking the file to be consulted, it will open using the program that is associated with that type of file by default (PDF, DWG....).

License requirements

Free software program, except for the automatic detection of clashes which will need the corresponding permission (Clash detection).