Definitions.
Omaha Municipal Code § 44-234
in effectSec. 44-234. - Definitions.
Adjacent means any property contiguous with the property line of the subject property excluding City of Omaha public rights-of-way.
Cutoff (of a luminaire) means the angle, measured up from nadir, between the vertical axis and the first line of sight at which the bare source is not visible.
Footcandle (fc) means a measure of illuminance or a measure of how bright a light appears to the eye. 1 footcandle is equal to 1 lumin/ft 2 or 10.76 lx. For example, a typical 60-watt incandescent lamp (840 lumens) produces an illuminance of 0.1 footcandles at a distance of about 25 feet.
Glare means the function of directly viewing a lamp (light source) within a luminaire and a high contrast with the immediate surroundings that exceeds 100 footcandles. The sensation produced by luminances within the visual field that are sufficiently greater than the luminances to which the eyes are adapted.
Luminaire means a complete lighting unit including the lamps, together with the parts required to distribute the light, to position and protect the lamps, and to connect the lamps to the power supply.
Nadir means the point directly below the luminaire when the luminaire is pointed down (0-deg. angle). Example:
[image omitted; see the official code]
Nadir
Photometric calculation means maximum horizontal footcandles, minimum horizontal footcandles, average maintained footcandles, average/minimum ratio and point by point footcandles across the site and 20 feet beyond the property line showing ½ footcandle contour line for adjacent residential properties or one footcandle contour line for public ways and all other adjacent properties.
Residential zoning district means Zone R-1 through R-8 and MH as defined in Chapter 55 of the Omaha Municipal Code and any amendatory provisions impacting upon such current zoning designations.
(Ord. No. 36203, § 2, 3-25-03)
Source: City of Omaha, Municipal Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/ne/omaha/codes/code_of_ordinances?nodeId=OMMUCOCHGEORVOII_CH44EL_ARTVELCO_DIV5EXLI_S44-234DEFetched: 10/28/2026
