The shower head and control area may be located on the back wall or on either side wall.
Handicap grab bar dimensions.
Each grab bar shall be 24 inches 610 mm long minimum and shall be installed 24 inches 610 mm maximum from the head end wall and 12 inches 305 mm maximum from the control end wall.
Two grab bars shall be installed on the back wall one located in accordance with 609 4 and other located 8 inches 205 mm minimum and 10 inches 255 mm maximum above the rim of the bathtub.
Vertical grab bars are not yet covered in the ada guidelines however ansi specifies the dimensions shown in the diagram.
Each grab bar shall be 24 inches 610 mm long minimum and shall be installed 24 inches 610 mm maximum from the head end wall and 12 inches 305 mm maximum from the control end wall.
The grab bar or bars shall be 33 36 inches 840 915 mm high.
The sizes range from 12 inches to 48 inches although some manufacturers offer a range from 9 inches to 60 inches.
Horizontal side wall grab bars need to be 42 1065 mm minimum length.
In addition to being offered in different lengths grab bars are also available in diameters of both 1 1 4 and 1 1 2.
The controls shall be placed in an area between 38 48 inches 965 1220 mm above the floor.
Controls shall be located on the back long wall 27 inches 685 mm from the side wall.
Grab bars need to be mounted lower for better leverage 33 36 840 915 mm high.