The 2010 ADA Standards require permanent rooms to be identified with signs containing raised characters and Braille. If pictograms are included to designate a toilet room, then the raised characters and Braille are to be installed directly below the pictogram. If the establishment has both complying and non-complying toilet rooms, then signage designating the complying toilet room will also include the international symbol of accessibility.
The toilet room sign may then look like the following:
Sign installation height is primarily regulated by two dimensions:
a) Height to the lowest portion of Braille
b) Height to the lowest portion of the highest row of text
NOTE: The answers provided are the opinion of the author, and should not be relied upon as ADA interpretations may vary.