Final answer:
Installation of grab bars must follow ADA guidelines, typically 12 inches from head end wall and 24 inches from control end wall for accessibility.
Step-by-step explanation:
The installation of grab bars in bathroom facilities is subject to specific dimensions for safety and accessibility compliant with the Americans with Disabilities Act (ADA) guidelines.
Although the exact measurements can vary based on the type of facility and the regulations in place, a common requirement is that each grab bar should be installed 12 inches maximum from the head end wall and 24 inches maximum from the control end wall. These measurements ensure ease of access for individuals with disabilities and are critical for builders and facilities to follow.