D4.3 Braille and tactile sign specificatD4.3 Braille and tactile sign specification

D4.3 Braille and tactile sign specification

(1) Tactile characters must be raised or embossed to a height of not less than 1 mm and not more than 1.5 mm.
(2) Title case must be used for all tactile characters, and:

(a) upper case tactile characters must have a height of not less than 15 mm and not more than 55 mm, except that the upper case tactile characters on a sign identifying a door required by Part E4.5 of the BCA to be provided with an exit sign must have a height of not less than 20 mm and not more than 55 mm; and

(b) lower case tactile characters must have a minimum height of 50% of the related upper case characters.

(3) Tactile characters, symbols, and the like, must have rounded edges.
(4) The entire sign, including any frame, must have all edges rounded.
(5) The background, negative space or fill of signs must be of matt or low sheen finish.
(6) The characters, symbols, logos and other features on signs must be matt or low sheen finish.
(7) The minimum letter spacing of tactile characters on signs must be 2 mm.
(8) The minimum word spacing of tactile characters on signs must be 10mm.
(9) The thickness of letter strokes must be not less than 2 mm and not more than 7 mm.
(10) Tactile text must be left justified, except that single words may be centre justified.
(11) Tactile text must be Arial typeface.