RECOMMENDED ILLUMINATION
FOR OUTDOOR TENNIS FACILITIES

Notes:
1. Maintained footcandles is determined by applying a light loss factor (LLF) to the initial or measured footcandles. LLF is dependent upon lamp characteristics, fixture maintenance, voltage variations and atmospheric conditions. It normally varies between .6 and .85. Consult the Illuminating Engineering Society handbook and fixture manufacturer’s publications for proper LLF values.
2. Average maintained and minimum maintained footcandles should be calculated within the Primary Playing Area (PPA) with the footcandle values multiplied by the appropriate LLF.
3. Uniformity ratio is defined as the ratio of the maximum footcandles divided by the minimum footcandles.
4. Primary Playing Area (PPA) is defined as the area that includes 6’ beyond the sidelines and 10’ behind the baseline.

Notes:
1. Class I facilities generally involve broadcast quality television production. These facilities will include permanent spectator accomodations.
2. Facilities that host intercollegiate play, but without broadcast television requirements. These facilities may have permanent or temporary seating.
3. Professional tennis events without broadcast television requirements.
4. Collegiate facilities primarily used for practice or for intramural or recreational play.
5. Collegiate facilities used strictly for recreational play.
6. Please note that some facility types appear in multiple categories. Illumination levels for a specific facility should be chosen based on the highest skill level, or spectator and television requirements that will take place at the facility. It is recognized that older players require higher light levels. Facilities with older average player ages should be designed for higher levels of light.