Directional and functional signs should be located below where they are easy to approach, to
touch and read the raised signs with the fingers (see B-24.2.10 to B-24.2.12).
Signs should be located where they are clearly visible to people who are seated, standing or walking.
Signs should be placed between 1 200 mm and 1 600 mm from the floor or ground surface. It should be possible to approach the sign to be read from a short distance (see Fig. 100).
Where it is likely that the sign may be obstructed, as in a crowded situation, the signs shall be placed at a height of at least 2 100 mm above the floor. The same requirement applies to signs fixed to the ceiling or projecting from walls. In that case, there should be two signs; one that can be seen from a distance above other people's heads, one as a complement at the height recommended above.
Where there is sufficient space, door signs shall be located on the latch side of the door within 50 mm to 100 mm of the architrave (see Fig. 101).