The occupational health and safety administration controls the standards for emergency lighting in the united states.
Exit light dimensions.
It states that each exit route must be adequately lighted so that an employee with normal vision can see along the exit route and each exit must be clearly visible and marked by a sign reading exit additional requirements include the following.
Ambient lights sources giving illumination to exit signs other than the electrical exit signs must have screens discs or lenses of not less than 25 square inches area made of translucent material to confirm contrast.
As you are aware nfpa 101 was modified by the nfpa in 1973 to include an exception to the size of the lettering.
Osha s requirements for lighting and marking exit routes are covered under 1910 37 b.
Exit signs must be properly illuminated by a reliable light source with a minimum of 5 foot candles on the illuminated surface.
The following information should help your company building owners and whoever is responsible for exit sign requirement oversight become completely aware of exit sign size requirements.
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Tall streamlined design is great for above the door applications and other tight fits.