In a four-story building, where must handicap facilities be required?

In a four-story building, handicap facilities must be provided on each level to ensure accessibility for individuals with disabilities. The Massachusetts Plumbing Code, as well as federal laws such as the Americans with Disabilities Act (ADA), mandates that accessible facilities, including restrooms and accessible routes, must be available on every floor of a multi-story building. This requirement ensures that all occupants and visitors can navigate the building without obstacles, promoting inclusivity and equal access.

By having facilities on every level, the design accommodates individuals who may not be able to use stairs due to mobility impairments. It reflects an understanding of the diverse needs of people using the building and ensures compliance with accessibility standards. Therefore, the correct answer emphasizes the necessity for comprehensive accessibility in all areas of the building, not just limited floors or specific locations.