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| VOLT Model Lighting Ordinance HTML | ||||||||||||||||||||
| VOLT has created a Model Outdoor Lighting Ordinance to be used as a template for localities developing their own ordinances. While it is difficult to produce a "one size fits all" document that will meet everyone's needs, we think this comes very close.
The main goal of this model ordinance is to streamline the draft process for DPZ staff. The elements we have included may be modified or deleted depending on your jurisdiction's specific needs. We have tried to create an ordinance that will minimize on-site inspector time and to eliminate nighttime inspection. The majority of the compliance requirements can be verified during the permit application phase. On installations of 100,000 total lumens or less, a simple verification of manufacturer supplied "cut sheets" is all that is required prior to the issuance of a permit. After installation, an inspector needs to ensure that all fixtures have been installed as specified in the permit. In addition all fixtures must be installed in such a manner as to be horizontal to the ground, so that the fixture’s cutoff characteristics are maintained. On all installations of 100,000 total lumens or more, the verification process is made easier by the use of a required computer generated photometric lighting plot. This document will specify minimum, average and maximum illumination measurements and DPZ staff will need to index this with IESNA recommended levels from the current IESNA Recommended Practice for the intended use. Suitable photometric lighting plots are readily available from equipment suppliers and lighting designers. For special use such as sports lighting, service stations and signs we have specific language to address these unique situations. In urban areas where many current service station canopies have been installed exceeding IESNA standards exist you may consider including an alternative to the maximum maintained illuminance level derived from current IESNA recommended practices to minimize the competitive disadvantage a new business might suffer. By linking to IESNA standards you will reduce the need for routine revision of the ordinance, while insuring that installations will meet national standards. Currently IESNA recommended practices do not specify maximum illumination values. This is a standard that IESNA is currently developing. When available, this will be the preferred cap to use. However as specified in the model ordinance, you may apply a multiplication factor to minimum or average illumination levels until IESNA publishes caps. |
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