Innovation Solutions - Development of Digital As-Built Model for I-80/I-380 Design 420 BIM - ST-012

(2023) Innovation Solutions - Development of Digital As-Built Model for I-80/I-380 Design 420 BIM - ST-012. Transportation, Department of

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Abstract

The deliverable of ST-012 is the 3D as-built model. The original model used to build the bridge was provided to the contractor in an i-model format. This format does not allow for editing or attaching information of the type required to convert it to an as-built model. Additionally, the Bentley modeling software used to develop this i-model is no longer compatible with the current versions of the software. Because of these limitations, the original software versions were used to add the as-built information and attachments. After the as-built updates were made, the model was republished to an i-model format. To ensure that the model could be used with future asset management software packages, the team explored non-proprietary open-file formats in which the model could be exported. Doing this eliminates the risk of Bentley’s proprietary i-model format becoming obsolete, rendering the model inaccessible to modern software. A non-proprietary file format called International Foundation Class (IFC) was found to be the most advantageous. Conversion to the IFC file format will allow the model to be read by other 3D modeling software.