Final answer:
Accessibility guidelines dictate that grab bars should be 1¼ to 2 inches in diameter and installed 33 to 36 inches above the floor, able to support over 250 pounds, complying with ADA standards.
Step-by-step explanation:
For accessibility, grab bars should have a diameter between 1¼ inches to 2 inches (32-51mm) and must be installed between 33 to 36 inches above the floor surface. They need to be strong enough to support more than 250 pounds of weight. In restrooms, grab bars are typically mounted on the side wall closest to the toilet at around 33-36 inches from the floor, or on the rear wall at the same height. This allows individuals with disabilities to use the bars for support when transferring to and from the toilet, which is essential for safety and independence. Compliance with the Americans with Disabilities Act (ADA) standards is crucial for public facilities and advisable for private homes to ensure accessibility for all individuals.