Baseball

Lighting criteria are different for college, high school, and recreational play. Stadium lighting considerations include:
- Proper orientations, locations, illuminances and controls that satisfy needs for any type of contingency
- Number of poles based on the width of the sideline
- Quality of cutoff or spill light control
STADIUM CLASS DESIGNATIONS
- Class I ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ Facility with OVER 5,000 spectator capacity
- Class II ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ Facility with UNDER 5,000 spectator capacity
- Class III ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ Facility with SOME spectator capacity
- Class IV ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ Facility with NO spectator capacity
LIGHTING OVERVIEW
- Horizontal
illuminance ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ a measure of the lumens per unit area on a horizontal
surface. Normally it is measured three feet above the playing surface.
- Uniformity
illuminance ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ a measure of the rate of change of illuminance expressed
as a ratio between the illuminance level of adjacent measuring points on
a uniform grid. The limit of uniformity varies with the speed of the
ball.
- LUX
ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ a measure of illuminance weighted to the spectral sensitivity of the
human eye. It is defined as 1 lux = 1 lumen/square meter.
- FC
ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚€Ã‚šÃƒ‚¬ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…“ foot-candle. The official definition is 1 foot-candle = 10.764 lux;
however, it is easiest to approximate at 1 foot-candle ÃÆÂ’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚†Ãƒ¢Ã‚€Ã‚™ÃƒƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‚¢ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã‚°ÃƒÃ‚ƒÃƒ†Ã‚’Æâ€Â™ÃƒƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚¢Ãƒ¢Ã‚‚¬Ã…¡ÃƒÃ‚ƒÃƒ†Ã‚’âہ¡ÃƒÃ‚ƒÃƒ¢Ã‚€Ã‚šÃƒƒÃ‚‹Ãƒ¢Ã‚€Ã‚ 10 lux.