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Any surfaces not covered by a category override will continue to use the reflectance as set by material. This is also performed in the Material Mapping dialog by using the switch to "View Category Overrides". Reflectances can also be set by Revit Category such as all ceilings or walls. Once the map is created, your lighting calculations can be completed across all boundary types used in the project without revisiting this area. This material mapping process is done on a project basis, with all Revit materials presented for mapping in the Materials Mapping dialog. ElumTools allows all Revit materials to be "mapped" to ElumTools materials in terms of surface color and reflectance, as well as surface type such as translucent or transparent. However, this may not be the reflectance you intended. ElumTools can calculate the surface reflectance from the RGB components of the material graphics color. ElumTools obtains this information through "Material Mapping".Īll Revit materials are assigned a "Graphics Color" that may or may not represent the intended surface color. The reflectance and color of various geometric surfaces are important for accurate calculation of reflected light and visualization. Exterior environment geometry can be captured using Revit Regions and Areas.ĮlumTools also allows the selection of random Revit entities to define your own environment for lighting calculations.ĮlumTools will work with linked models see our Guidelines. ElumTools allows you to select Rooms or Spaces individually or in groups to define the spatial geometry for the lighting computation. Revit provides an intuitive separation of interior building areas using entities known as "Rooms" and "Spaces." Rooms are defined in Revit Architecture, while both Rooms and Spaces are defined and available in Revit MEP. This simplifies the calculations to the point where the lighting design of the area of concern can be iterated and finalized according to your specific requirements. Fortunately, there are easier methods that allow you to perform the calculations for individual building areas or groups independently. While ElumTools allows lighting calculations for an entire model, this is generally not an efficient way to approach lighting design. What already exists in Revit? BIM models created in Revit contain an enormously complex three-dimensional, parametrically related system of building components. Additional computations can yield illuminance on imaginary surfaces such as work planes, Unified Glare Rating (UGR), Daylight Factor (DF) and Photosynthetic Photon Flux Density (PPFD).
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Based on the calculated luminous exitance, ElumTools can derive the illuminance (or luminance) at any point on that surface. With these items known, you can perform a calculation based on proven Radiosity technology to provide the luminous exitance for every surface included in the selected geometry. For Daylight calculations visible transmittance must be assigned in the Materials Mapping dialog, project location and orientation is obtained from the Revit project file and can be modified in ElumTools Daylight dialog.Luminaires positioned in the Revit model (can also be produced by ElumTools).Luminaire families with photometric source type and valid IES file.All geometry must have a material assigned to be visible in an ElumTools calculation. Surface reflectances mapped by material or category.Spatial geometry as contained in Rooms, Spaces, Areas, Regions or even specific Views which are used as calculation volumes.
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The execution of an accurate calculation of any lighting metric, illuminance for example, on a surface or work plane requires that the following quantities be defined: The entire concept of ElumTools is based on the ability to leverage content within your Revit model as building blocks toward the composition of an accurate lighting computation. What is required for an accurate lighting computation? Using ElumTools avoids the need to utilize third-party lighting software outside of the Revit environment. The calculated results can be viewed within the framework of Revit views, summarized in Revit schedules and reviewed in an interactive visualization that is a byproduct of the calculation process. Daylight analysis can include electric luminaires or consider the effect of natural light only. The electric luminaire instances can already be present in your Revit model, or quantity and position can be produced by ElumTools (see the Layout Assistant). Using ElumTools, you can predict various lighting metrics (illuminance, luminance and more) on any surface or imaginary plane due to electric lighting fixtures (luminaires). ElumTools is an incredibly intuitive software Add-In for Autodesk ® Revit ® to assist designers in quantifying and understanding light.