The Integration of Building Information Modeling data & City Models using Geo-BIM

Building Information Modeling data integrates into 3D city models using commercial and open-source tools. Integration between Industry Foundation Classes (IFC) and City-GML requires converting information between different models. It is also challenging to transform geometries from solid models. BIMs use for solid representations, while city models use for boundary representations.

Increasing numbers of cities use 3D city models for urban planning visualization and simulation. Often, the models include planned buildings as well. The 3D city model of the city can populate with BIM models of planned buildings.

What is Geo-BIM?

In 2019, a Geo-BIM benchmark examined interoperability in the Geo-BIM domain, which allowed Building Information Modeling to integrate with city models. City-GML and IFC tools evaluate tools for converting data. Four datasets evaluated ETL scripts and several software tools. IFC files are modeled differently, inconsistently, as can be seen by the elements. It may be challenging to develop generic programs that can convert IFC data into City-GML models because of this. As a result, IFC elements of the benchmark were translated into generic City-GML objects, inspected, and modified in practice.

The architecture, engineering, and construction (AEC) domain must reach a consensus on standards and guidelines concerning how IFC models should be modeled. Several countries have already undertaken such work. Standardization of city models is also necessary. As a concept document, City-GML 3.0 is slated for approval in September 2021. Interoperability with IFC improved through the implementation of some concepts.

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Published By
Arka Roy
www.bimoutsourcing.com

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