Helios is an Autodesk® Revit® plugin for computing whether a room can be used as a living or reception room, as specified by the Austrian lighting standards, defined in OIB-330.3-011/23.


Helios automates the process of calculating whether a selected room in a Revit project fulfills the standards to be a living or reception room, i.e. a room in which people spend more than 2 hours per day on a daily basis.


The tool quickly performs the necessary computations and displays all relevant information in a clear and concise manner.


Core Functionality

The core functionality of Helios consists of the following steps:

  • Finds all the windows that belong to the specified Room by the user.
  • Calculates the combined illumination area (as specified in OIB-330.3-011/23) of all windows in the room. Helios is compatible with any Revit Family that belongs to the Window category, including custom ones.
  • Computes the minimum illumination area required for the specified room to be acceptable as a living or reception room, given the room’s depth and whether there is a balcony above the room.
  • Compares the minimum required illumination area to the actual combined illumination area and concludes whether the room can be used as a living or reception room.



  • Helios does not yet support the Curtain Walls. If a room contains a curtain wall, the curtain wall will not be included in the combined illumination area of the room.
  • Helios cannot yet automatically determine whether there is a balcony above the window. The user needs to manually specify this via the Helios interface.
  • Helios does not take into account whether there is a building in front of the window. This needs to be taken into account separately.

Informationen zu dieser Version

Version 1.0.0, 03.04.2024
Initial release

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