Industry Foundation Classes (IFC), the buildingSMART open standard for BIM, is underused with respect to its promising potential, since, according to the experience of practitioners and researchers working with BIM, issues in the standard’s implementation and use prevent its effective use. Nevertheless, a systematic investigation of these issues has never been carried out, and there is thus insufficient evidence for tackling the problems. The GeoBIM benchmark project is aimed at finding such evidence by involving external volunteers, reporting on various aspects of the behavior of tools (geometry, semantics, georeferencing, functionalities), analyzed and described in this article. Interestingly, different IFC software programs with the same standardized data sets yield inconsistent results, with few detectable common patterns, and significant issues are found in their support of the standard, probably due to the very high complexity of the standard data model. A companion article (Part II) describes the results of the benchmark related to CityGML, the counterpart of IFC within geoinformation.

中文翻译：

---

IFC软件支持的参考研究：GeoBIM基准测试2019 —第一部分

针对BIM的buildingSMART开放标准行业基础类（IFC）在其潜在的潜力方面未得到充分利用，因为根据与BIM合作的从业人员和研究人员的经验，该标准的实施和使用中的问题阻碍了其有效使用。然而，从未对这些问题进行系统的调查，因此没有足够的证据来解决这些问题。GeoBIM基准项目旨在通过让外部志愿者参与，报告工具行为的各个方面（几何，语义，地理配准，功能），在本文中进行分析和描述，来找到此类证据。有趣的是，具有相同标准化数据集的不同IFC软件程序产生的结果不一致，几乎没有可检测到的通用模式，在对标准的支持中发现了很多问题，这可能是由于标准数据模型的复杂性很高。随附的文章（第二部分）描述了与CityGML相关的基准测试结果，CityGML是地理信息中与IFC相对应的内容。