Ramp stairs landing your railing cannot be 34 inches in one section and 38 inches in another.
Ada bathroom handrail height.
The bar must be 1 1 4 to 1 1 2 inches in diameter.
Side wall the side wall grab bar shall be 42 inches 1065 mm long minimum located 12 inches 305 mm maximum from the rear wall and extending 54 inches 1370 mm minimum from the rear wall.
Grab bars in toilet stall requirements.
An ada compliant grab bar handrail must be fully anchored and have a smooth surface that can be easily grabbed.
The source for the information below is the 2010 ada standards for accessible design.
At the head of the tub the grab bar shall be a minimum of 12 inches 305 mm in length measured from the outer edge of the tub.
Figure 34 b with seat at head of tub.
Top of gripping surfaces of handrails shall be 34 inches 865 mm minimum and 38 inches 965 mm maximum vertically above walking surfaces stair nosings and ramp surfaces.
The other shall be 33 to 36 inches 840 mm to 915 mm above the bathroom floor.
One grab bar on the back wall shall be located 9 inches 230 mm above the rim of the tub.
Handrails shall be at a consistent height above walking surfaces stair nosings and ramp surfaces.
The current ada standards dictate the height of an ada handrail must be a minimum of 34 inches and a maximum of 38 inches from the walking surface to the top of your grab rail.
In other words even if your railing covers multiple surfaces i e.
Measure up from the floor 34 5 inches and make a mark on the rear wall at this height.