How many foot-candles are required for stairways and landings?

The requirement for foot-candles on stairways and landings is established to ensure safety and visibility for individuals using these areas. A minimum of 20 foot-candles is needed to adequately illuminate stairways and landings, which helps prevent accidents and facilitate safe navigation. This standard takes into account the variances in natural and artificial lighting, ensuring that all users can clearly see the steps and any potential hazards. Maintaining this level of illumination is crucial for reducing the risk of falls and promoting overall safety within the facility. The other options present higher or lower foot-candle levels, which do not align with the established safety standards for these specific areas.