Shower Grab Bar Heights
Grab bars shall be installed 6 inches 150 mm maximum from adjacent walls.
Shower grab bar heights. For 3 and 4 year olds bars should be 18 20 inches from the floor for 5 to 8 year olds bars should be 20 25 inches and for 9 to 12 year olds grab bars should be 25 27 inches. Ada accessible bathrooms for kids should have grab bars at heights of 18 27 inches depending on the primary age group using the bathroom. For horizontal grab bars the ada standards require a height between 33 and 36 inches from the finished floor of the bathroom shower or tub. The grab bar s shall be mounted 33 36 inches 840 915 mm above the shower floor measured at the entry.
In toilets and showers the tops of horizontal grab bars need to be 33 to 36 inches from the floor. It is helpful to use this range as a guide for placement but the most important part is selecting a height that feels comfortable and secure for the person using them. The controls shall be placed in an area between 38 48 inches 965 1220 mm above the floor. Typically grab bars in the shower should be installed 33 to 36 inches from the floor of the bathroom this is according to ada americans with disabilities act standards.
Grab bars shall not be provided above the seat. However ada standards recommend that rear grab bars be installed at the height of between 33 and 36 inches above the finished floor of the tub shower or bathroom. A 36 inches 915 mm minimum length grab bar mounted 33 36 inches 840 915 mm above the finish floor is required behind the water closet. Generally grab bars should be installed at whatever height is most appropriate for their primary user.
Alternate roll in type shower compartments in alternate roll in type shower compartments grab bars shall be provided on the back wall and the side wall farthest from the compartment entry. The problem is that installers often aim for one edge of the range and end up a bit high or low. Grab bars in shower stall requirements transfer type shower compartments transfer type shower compartments shall be 36 inches 915 mm by 36 inches 915 mm clear inside dimensions measured at the center points of opposing sides and shall have a 36 inch 915 mm wide minimum entry on the face of the shower compartment. But i would strongly recommend to take into consideration the height and physical capabilities of the person you are installing these grab bars for.
This is a good starting range.