![]() ![]() The resultant definition is captured in an IES file. Early in a project, these may be used to imply electric lighting, but in most cases would ideally give way to a more accurate option defined next.įor photometric, the light source is mathematically defined based on light distribution as measured from an actual lighting fixture in a lab. These options are not based on any real-world lighting fixture. There are two types of light sources possible within a Revit family: generic and photometric.įor generic, there are three light distribution types: sphere, hemispherical, and spot. You can learn more in this BIM Chapters blog post: IES BIM Standards Committee. Currently, I am the chair of the national Illuminating Engineering Society (IES) committee on BIM Standards. I have been involved in various aspects of lighting design and analysis for several years. ![]() The image below, of the AIA COTE 2020 award-winning Austin Central Library, in Austin, Texas, USA, shows many of these techniques employed during design and construction.Īustin Central Library design by Lake|Flato ![]()
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