High Mast Lighting
RIGID Horizontal Tenon - This mount ensure the fixtures are pointing downward (which is IDA compliant). High Mast Lights are not only mounted via Horizontal Tenon, but they also utilize a 4-bolt mounting system to ensure that the fixtures are safely secured.
Flood Lights that mount to Horizontal Tenons typically use "Slipfitter" mounts that secure via SET SCREWS, which are more susceptible to vibration concerns.
Flood Lights
Knuckle Mount - This mount attaches buildings via a ½” Thread and enables directional aiming of the fixture to one of several fixed angles.
Adjustable Slip Fitter – The most common due to its versatility. This mount allows the angle of the fixture to be adjusted from 90 to 180, which enables directional aiming of light output.
Trunnion Mount – This convenient mount attaches easily to flat surfaces (either buildings or poles) and enables directional aiming of the fixture to one of several fixed angles.
With flood lights, the adjustable mounting of flood lights causes changes in the light patterns on the on the ground. For example, a wide beam spread means that light will become more diffused further away as the fixture is angled “up”. So as light moves away from a targeted surface, it spreads out and becomes less intense. Imagine your pointing a flash light directly down to the ground. Then imagine (or remember) how that beam of light changes as you turn the flash light on its access until it is pointing straight ahead.
