To ensure proper lighting in reading and painting areas, the minimum lumens required on the work surface is:

The requirement for at least 50 foot candles of illumination on work surfaces in reading and painting areas is established to ensure that individuals can perform tasks requiring visual acuity without straining their eyes. This level of lighting provides adequate brightness for activities that require detailed attention to color, shape, and texture, which are essential in both reading and painting.

Proper illumination allows individuals to clearly see the materials they are working with, enhance concentration, and reduce the risk of accidents or injuries that might occur due to inadequate visibility. In settings such as classrooms, studios, or therapeutic environments, adhering to this standard supports optimal learning and creative expression.

The other values of foot candles—30, 40, and 60—while they may provide varying levels of illumination, do not meet the specific recommendation set forth for these particular activities. Lower levels might hinder effective work, while excessively high levels could cause glare, leading to discomfort and potential distractions. Thus, the standard of 50 foot candles represents a balanced approach to ensuring both safety and effectiveness in visual tasks.