The Path From Bim to a 3d Indoor Framework – A Requirement Analysis

Abstract

<p><strong>Abstract.</strong> Building Information Modelling is a new technology and tool for researchers in Architecture/Construction/Engineering (ACE) fields, and it is designed to organise the collaboration between different parties and manage all types of information regarding buildings. A standardized data model of BIM named Industry Foundation Classes (IFC) has been proposed to describe building & construction related information and facilitate the interoperability of building data. As IFC contains plenty of building information, further spatial analysis can be applied in geographical information system (GIS) with these information. Current research has mainly discussed the requirements about data translation from BIM to GIS. However, more specific requirements on the functionalities of a generic 3D indoor framework need to be considered with IFC data. Although this research is in the initial stage, we investigate the use of BIM IFC for the 3D indoor framework, especially on the data translation from IFC to the framework, data management in the framework and IFC data for 3D spatial analysis. Requirements are analysed in four aspects: 1) automation of indoor vector map generation; 2) data management for the framework; 3) environmental analysis of the framework; and 4) safety analysis of the framework. According to these requirements, new modules need to be developed. In the future, based on IFC data we will conduct tests of data transformation, design a data model for the 3D indoor framework and develop a prototype to demonstrate the planned spatial analysis functionalities.</p>

L5IN: Overview of an Indoor Navigation Pilot Project

“…Information that otherwise comes from different sources (such as drawings, tables, presentations, and charts) can be bundled within a BIM. The fact that working with BIMs allows the use of a combination of semantic, geometric, and topological attributes is one reason for their growing usage in different cases [13,14].…”

“…The use of the IFC schema can also be found in various other projects for purposes of geometric representation, routing, etc. [13,16,17]. Note that the IFC STEP Physical File (IFC SPF) is not the only way to export BIMs from the native data formats of the modeling software.…”

“…Besides the IFC SPF, there are also export options in the form of data tree structures such as JSON or XML [18]. In contrast to the IFC SPF, these offer a more user-friendly and human-readable form and are therefore used in various other projects [13,14] and will be in the L5IN project as well.…”

Geospatial Data Management Research: Progress and Future Directions

“…[26] contains an application to emergency response in buildings. Also, indoor networks from IFC models rely on correctly capturing the topology in buildings [27].…”

A Gis-Based Automated Architectural Spatial Analysis and Representation in the Conceptual Design Phase

“…However, currently GIS is used in architectural indoor analysis to take advantage of its power in storing, quarrying, analysing, and displaying all types of spatial data. Currently, GIS system is being developed to host all BIM data, and produce indoor maps derived from BIM models [5] . It is not surprising that many of the GIS leaders are architects.…”