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{{redirect|BIM|other uses|Bim (disambiguation)}}
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[[File:Scan-to-BIM Mechanical Room.jpg|thumb|
'''Building information modeling ''' ('''BIM''') is an approach involving the generation and management of digital representations of the physical and functional characteristics of buildings or other physical assets and facilities. BIM is supported by various tools, processes, technologies and contracts. Building information models (BIMs) are [[computer files]] (often but not always in proprietary formats and containing proprietary data) which can be extracted, exchanged or networked to support decision-making regarding a built asset. BIM software is used by individuals, businesses and government agencies who plan, [[Building design|design]], [[construction|construct]], operate and maintain buildings and diverse [[hard infrastructure|physical infrastructure]]s, such as water, refuse, electricity, gas, communication utilities, roads, railways, bridges, ports and tunnels.
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[[File:Operational BIM 2D floor plan view in a mobile device.png|thumb|Operational BIM 2D floor plan view in a mobile device]]
Dynamic information about the building, such as sensor measurements and control signals from the building systems, can also be incorporated within software to support analysis of building operation and maintenance.<ref>{{cite book |doi=10.1061/41052(346)10 |chapter=Requirements and Evaluation of Standards for Integration of Sensor Data with Building Information Models |title=Computing in Civil Engineering |year=2009 |last1=Liu |first1=Xuesong |last2=Akinci |first2=Burcu |isbn=978-0-7844-1052-3 |pages=95–104 |editor1-first=Carlos H. |editor1-last=Caldas |editor2-first=William J. |editor2-last=O'Brien}}</ref> As such, BIM in facility operation can be related to [[internet of things]] approaches;<ref>Shu Tang, Dennis R. Shelden, Charles M. Eastman, Pardis Pishdad-Bozorgi, Xinghua Gao (2019), "[https://www.sciencedirect.com/science/article/pii/S0926580518305764 A review of building information modeling (BIM) and the internet of things (IoT) devices integration: Present status and future trends]," ''[[Automation in Construction]]'', Volume 101, pp 127-139, https://doi.org/10.1016/j.autcon.2019.01.020.</ref> rapid access to data may also be aided by use of mobile devices (smartphones, tablets) and machine-readable [[Radio-frequency identification|RFID]] tags or [[barcodes]];<ref>Costin, A.M., Teizer, J. "Fusing passive RFID and BIM for increased accuracy in indoor localization". ''Visualization in Engineering''. 3, 17 (2015). https://doi.org/10.1186/s40327-015-0030-6</ref> while integration and interoperability with other business systems - [[Computer-aided facility management|CAFM]], [[Enterprise resource planning|ERP]], [[Building automation|BMS]],
There have been attempts at creating information models for older, pre-existing facilities. Approaches include referencing key metrics such as the [[Facility Condition Index]] (FCI), or using [[3D scanner|3D laser-scanning]] surveys and [[photogrammetry]] techniques (separately or in combination) or digitizing traditional building surveying methodologies by using mobile technology to capture accurate measurements and operation-related information about the asset that can be used as the basis for a model. Trying to retrospectively model a building constructed in, say 1927, requires numerous assumptions about design standards, building codes, construction methods, materials, etc, and is, therefore, more complex than building a model during design.
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* [[List of BIM software]]
* [[Macro BIM]]
* [[Open-source architecture]]
* [[List of free and open-source software packages#3D|Open-source 3D file formats]]
* [[OpenStreetMap]]
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* [[Facility management]] (or Building management)
* [[Building automation]] (and Building management systems)
*[[Xeokit]] - [[open-source]] [[JavaScript]] [[software development kit]] (SDK) for rendering 3D graphics in web browsers for BIM
==Notes==
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