|
Baseball and
Softball are both high-speed aerial sports. Illuminance levels and light
direction on the ball and the players are critical. In flight, the ball may
be momentarily lost from sight due to glare of light sources or a background
of low contrast. Proper pole location and aiming are essential for good
visibility.
Light from Multiple Directions:
Lighting should be designed to minimize shadows and provide good modeling of
the players. This usually requires lighting from three or four directions.
Floodlight Locations: Floodlight
locations should coincide with the way the game is played. Usually the
fixtures are place on two “A” poles in the infield, two “B” poles down the
first and third base lines, and “C” poles in the outfield. All layouts
utilize the same location for the “A” pole. The 6 pole and 8 pole layouts
use the same location for the “B” poles as well.
Glare Control: To reduce glare
floodlights must be aimed out of the line of sight of the players. A
step-by-step analysis of the way baseball is played is necessary. The
proper arrangement of poles will minimize any direct glare for players.
Luminaire Beam Spread: The beam
spread of each floodlight should be selected to put the maximum amount of
light on the field without producing a hot spot. The beam should be wide
enough to overlap the distribution from adjacent aiming points.
Mounting Height: The
minimum mounting height to the bottom row of luminaires for all poles is 15
meters (50 feet). Mounting heights would be increased to compensate for the
additional rows of luminaires. Mounting heights should also be increased
when necessary to prevent glare and efficiently utilize the beam.
|
