BIM software focuses primarily on buildings, but Bentley Systems use a modular system as a stand-alone application, similar to other BIM software developers. Therefore, different solutions are adapted to different disciplines, such as OpenBuildings for buildings, OpenRail for railways, OpenRoads for roads, OpenPlant for factories, plants, and so on. Most of the company’s products are focused on factories, communications and other civil engineering. BIM software uses parametric objects, depending on the discipline. This provides a high level of configuration functionality because the roads are designed differently than the buildings, just as the rail BIM models differ from the roads. This specialization provides an advantage in specific niches, but makes it difficult for the user to work with multiple disciplines, due to the high learning curve and additional costs for all required programs. Just like in other BIM modeling programs, the 3D model and 2D drawings are automatically merged and all changes take place in both directions. Assigning information to objects is easily controlled by an advanced parameter assignment and control engine. It is a highly capable BIM platform, but due to the very wide range of different tools needed to build a sustainable BIM ecosystem, it is difficult to install and master this software.

https://www.bentley.com/pt/products/product-line/building-design-software/openbuildings-designer