To meet the requirements of the Americans With Disabilities Act, a toilet must have side and rear grab bars. The rear grab bar must be at least 36 inches long, unless wall space does not permit this, and the side grab bar must be at least 42 inches long.
ADA regulations require that the rear wall grab bar extend at least 12 inches from the centerline of the stall on one side and 24 inches from the center line on the side intended for transfer between the toilet and a wheelchair. If wall space does not permit this because of a recessed fixture, the rear grab bar must be at least 24 inches long and centered in the stall. The side grab bar must be located no more than 12 inches from the rear wall, and it must extend at least 54 inches from the rear wall.
All grab bars or hand rails must have gripping surfaces between 1 1/4 inches and 1 1/2 inches in diameter. Grab bars or hand rails mounted on a wall must have 1 1/2 inches between the bar and the wall, unless they are located in a wall recess that is no more than 3 inches deep. The recess must extend at least 18 inches above the top of the rail.