Character
Proportion
Letters and numbers on signs shall have a width-to-height ratio between 3:5 and 1:1 and a stroke-width-to-height ratio between 1:5 and 1:10.
Character Height
Characters and numbers on signs shall be sized according to the viewing distance from which they are to be read. The minimum height is measured using an
upper case X. Lower case characters are permitted.
Raised / Brailled Characters / Pictorial Symbol Signs
Letters and numerals shall be raised 1/32 in, upper case, sans serif or simple serif type and shall be
accompanied with Grade 2 Braille. Raised characters shall be at least 5/8 in (16 mm) high, but
no higher than 2 in (50 mm). Pictograms shall be accompanied by the equivalent verbal
description placed directly below the pictogram. The border dimension of the pictogram shall be
6 in (152 mm) minimum in height.
Finish and Contrast
The characters and background of signs shall be eggshell, matte, or
other non-glare finish. Characters and symbols shall contrast with their background --either light
characters on a dark background or dark characters on a light background.
Mounting Location and Height
Where permanent identification is provided for rooms and
spaces, signs shall be installed on the wall adjacent to the latch side of the door. Where there is
no wall space to the latch side of the door, including at double leaf doors, signs shall be placed
on the nearest adjacent wall. Mounting height shall be 60 in (1525 mm) above the finish floor to
the centerline of the sign. Mounting location for such signage shall be so that a person may
approach within 3 in (76 mm) of signage without encountering protruding objects or standing
within the swing of a door.
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Symbols of Accessibility
(1) Facilities and elements required to be identified as accessible
shall use the international symbol of accessibility.
(2) Volume Control Telephones. Telephones required to have a volume control
shall be identified by a sign containing a depiction of a telephone handset with radiating sound
waves.
(3) Text Telephones. Text telephones required shall be identified by the
international TDD symbol. In addition, if a facility has a public text telephone,
directional signage indicating the location of the nearest text telephone shall be placed adjacent
to all banks of telephones which do not contain a text telephone. Such directional signage shall
include the international TDD symbol. If a facility has no banks of telephones, the directional
signage shall be provided at the entrance (e.g., in a building directory).
(4) Assistive Listening Systems. In assembly areas where permanently installed assistive
listening systems are required the availability of such systems shall be
identified with signage that includes the international symbol of access for hearing loss.
Illumination Levels
Illumination levels on the sign surface shall be in the 100 to 300 lux
range (10 to 30 footcandles) and shall be uniform over the sign surface. Signs shall be located
such that the illumination level on the surface of the sign is not
significantly exceeded by the ambient light or visible bright lighting source behind or in front of the sign.
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