Skip to main content


This section describes how to use solids. Solids represent items on the drawing that will block light, such as buildings.

Common Solids Information

The values that can be specified for a solid are listed below.

  •  Starting Elevation: The starting elevation of the solid.

    If this is 0 and the object is a closed area, no values inside the object will be calculated or displayed.

    If this is greater than 0, the light levels underneath the object will be calculated. This setting can be used to model overhangs.

  •  Ending Elevation: The ending elevation of the solid.

    If this elevation is lower than the elevation of a light fixture, some light will pass over the object.

  •  Reflectance: The percentage of light reflected by the solid. It is only used if reflections are enabled in the Calculate dialog box.