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• Ch. 60 - Introductory Provisions
• Ch. 61 - Lot and Site Development Approval Procedures
• Ch. 62 - Zoning District Regulations
• Ch. 63 - Lot Development Standards
• Ch. 64 - Site Design Policies
• Ch. 65 - Nonconformities
• Informational Supplement
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CHAPTER 63 - LOT DEVELOPMENT STANDARDS

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63.200 APPEARANCE CONTROLS

This Article describes the appearance control standards found in the Zoning District Tables for each of the various uses listed therein.

63.210 EXTERIOR LIGHTING STANDARDS

This section describes the exterior lighting standards (R,A,B,C,D,E) identified in the Zoning District Tables of Chapter 62 for each type of permitted or conditional use.

63.211

Purposes:  The purpose of these regulations is to regulate the spillover of light and glare from private developments onto the operators of motor vehicles in the public and private roadways, and on land uses in the vicinity of the light source.  With respect to motor vehicles in particular, safety is the prime consideration for the regulations contained herein.

63.212

Definitions:  For the purpose of applying the regulations of this section, the following definitions shall apply:  

1. Cutoff:  The point at which all light rays emitted by a lamp, light source or luminaire are completely eliminated (cutoff) at a specific angle above the ground.
2. Cutoff Angle:  The maximum angle formed by a line drawn in the direction of emitted light rays at the light source and a line perpendicular to the ground from the light source.
3. Cutoff-Type Luminaire:  A luminaire with elements such as shields, reflector, or refractor panels which direct and cut off the light at a cutoff angle that is less than 90 degrees.
4. Foot-candle:  A unit of illumination produced on a surface, all points of which are one foot from a uniform point source of one candle.
5. Glare:  The brightness of light source which causes eye discomfort.
6. Luminaire:  A complete lighting unit consisting of a light source and all necessary mechanical, electrical and decorative parts.

63.213

Standards:  The  following paragraphs describe the criteria for maximum  permitted illumination (in foot-candles) and for maximum permitted height of luminaire for each standard (R,A,B,C,D, or E) for luminaires with different cutoff angles.

1. The standards for a light source or luminaire with no cutoff are:  
   
   

   	Maximum Permitted Illumination	Maximum Permitted Height of Luminaire
   R	0.20	10’
   A	0.20	15'
   B,C,D,E	0.30	20'

   
   Illustration of light source with no cut off.
   
2. The standards for a luminaire which has a total cutoff angle greater than 90 degrees are:
   
   
   

   Standard	Maximum Permitted Illumination	Maximum Permitted Height of Luminaire
   R	0.3	15’
   A	0.5	20'
   B	0.75	25'
   C	1.0	30’
   D	1.5	35’
   E	2.0	40’

   
   Illustration of light source with a total cutoff of greater than 90 degrees.
   
   
3. Luminaires with a total cutoff of light of less  than 90 degree shall be designed so that the bare  light bulb, lamp or source is completely shielded from the direct view of an observer standing at the property line at a point five feet above grade.  The maximum permitted design requirements for cutoff luminaires are

Standard	Maximum Permitted Illumination	Maximum Permitted Height of Luminaire
R	0.5	20’
A	1.0	25'
B	2.0	30'
C	3.0	40’
D	4.0	50’
E	5.0	60’

  Illustration of light source with a total cutoff of less than 90 degrees.

63.214

Exception for Outdoor Recreation Uses:  Because of their unique requirement for nighttime visibility and their limited hours of operation, ball diamonds, playing fields and tennis courts are exempted from the general standards of this section.  Lighting for these outdoor recreational uses shall be shielded to prevent light and glare from spilling over onto adjacent residential properties.  The maximum permitted illumination at the property line shall not exceed two foot-candles.

63.215

Additional Regulations:  In addition to the above regulations, the following provisions shall apply:  

1. No flickering or flashing light shall be permitted.
2. Light sources or luminaires shall not be located within bufferyards except along pedestrian walkways.
3. The use of exterior lighting for nonresidential uses shall observe the same hours of operation as the use itself, except that a minimum level of lighting for security purposes may be left on beyond the normal hours of operation.

63.216

Method of Measurement:  Lighting levels shall be measured in foot candles with a meter sensor mounted not more than six inches above ground level in a horizontal position a the property line.  Readings shall be taken only after the cell as been exposed long enough to provide a constant reading. Measurements shall be made after dark with the light sources in question on, then with the same sources off.  The difference between the two readings shall be compared to the maximum permitted illumination specified in this section for the type of luminaire used.




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