The Visual Interior Tool is designed to perform lumen method calculations on a rectangular
room. The lumen method determines average illuminance achieved on the workplane
using a derived property of luminaire photometrics and room geometry called the
coefficient of utilization. The lumen method makes the following assumptions
- Luminaires are spaced uniformly
- Room is empty
- Surfaces are diffuse
- Surfaces have neutral color
Because the lumen method provides an average illuminance, point values for calculations
might vary considerably. Please use the professional addition of Visual for full
lighting analysis.
Values calculated during the zonal cavity method are shown in the collapsible panel
below the Display settings. These values are provided to help those curious about
how the zonal cavity method works see the intermediary values that must be calculated
in order to perform the calculation. For more information on the lumen method /
zonal cavity method consult the IESNA Lighting Handbook.
If you have any questions not answered by the tutorial video, or comments on the
Interior Tool email VisualSupport@AcuityBrands.com.
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Agents and ABL Employees: enter your Agile username and password.