In assembly and educational occupancies, what is the maximum percentage of urinals that may substitute for required water closets?

In assembly and educational occupancies, the code stipulates that up to 67% of required water closets can be substituted with urinals. This provision is designed to enhance water conservation and efficiency while maintaining functional capacity in restrooms. The reasoning behind allowing this substitution is that urinals typically use less water per use compared to water closets, thus providing effective and sustainable restroom solutions, especially in environments with high occupancy such as schools and assembly areas.

By allowing a significant percentage of urinals to replace water closets, the code ensures that sanitary facilities are both adequate for user needs and compliant with water-saving initiatives. Substituting more than this recommended percentage could potentially lead to inadequate restroom facilities, especially given that not all individuals using the facilities can utilize urinals. Therefore, the figure of 67% reflects a balance between effective operation of restrooms and the benefits of reduced water usage.