Convert ISM to DWG

Understanding ISM and DWG file formats

ISM files are typically associated with Bentley i-models, used in infrastructure and civil engineering projects. These files store rich 3D model data, including geometry, metadata, and design information, and are commonly used for interoperability between Bentley applications.

DWG is a widely recognized file format developed by Autodesk for AutoCAD and other CAD software. It contains 2D and 3D design data and is the industry standard for sharing and editing CAD drawings.

Why convert ISM to DWG?

Converting ISM to DWG allows users to share and edit infrastructure models in popular CAD applications like AutoCAD. This enhances collaboration with partners who may not use Bentley software and ensures compatibility with a broader range of design tools.

How to convert ISM to DWG

Direct conversion from ISM to DWG is not natively supported by most software. However, you can use Bentley's OpenBuildings Designer or MicroStation to import ISM files and then export them as DWG:

1. Open MicroStation or OpenBuildings Designer.
2. Use File → Import → ISM to bring your ISM model into the project.
3. Once imported, go to File → Export → DWG to save the model in DWG format.

This process preserves most geometry and metadata, but always review the exported DWG for accuracy.

Best software for ISM to DWG conversion

The most reliable software for this conversion is Bentley MicroStation or OpenBuildings Designer. These tools are designed to handle ISM files and offer robust export options to DWG, ensuring high fidelity in the converted files.

Tips for successful conversion

• Check for software updates to ensure compatibility with the latest file formats.
• Review the exported DWG in AutoCAD or a DWG viewer to verify all elements are correctly converted.
• Retain a backup of the original ISM file in case you need to repeat the process.