20517 App O.pdf [As Published] · 132007.1259

41

4.2
4.3

44
45

4.6
47

acces ar\
WAYS Consultants

Braille, where used, must be Grade 1 British Braille in accordance with the Unified
English Braille Code .

Braille must be raised and domed in accordance with Table 1

Where used Braille must have no luminance or colour contrast with the surface it is
viewed against.

Where possible Braille must be left justified.

On signs with multiple tines of Braille or where Braille cannot be positioned in
accordance with this Specification, a semi-circular raised or recessed Braille locator
at the left margin must be horizontally aligned with the first line of Braille text.

The six dot principal is not required to be used with Braille on Raised Tactile Signs
On Directional Signs, a small solid tactile arrow must be used which is the same
height as the Braille Cell in the Braille text. It must be aligned in accordance with the
ranging used for Directional Signs. The overall size of the arrow must not exceed
15mm in length and 6mm in width.

Braille

Table 1 — Braille Specification

 

 

 

 

 

Horizontal | Vertical | Cell to cell |Line to Line} Min dot Max dot | Dot height | Dot radius
dot to dot | dot to dot Base diam | base diam spherical
Mm mm Mm Mm mm mm mm mm
2.29 — 2.50 | 2.29 - 2.54 | 6.00 — 6.10 ee 1.40 1.50 0.46 — 0.53 | 0.76 - 0.80

 

 

 

 

 

 

 

 

Page: 17 of 23