Page 248 - FT SAFETY CATALOG 2017-2018

SAFETY SIGNS & POSTERS SAFETY SIGNS & POSTERS

VIEWING DISTANCES

For a sign to be visible and understood Viewing distances (according to BS ISO 3864-1: 2011) – Fire equipment and sign categories
Viewing distances (according to BS 5499-4: 2013) – Escape route signs
The size of the sign is defined by the maximum The larger the sign the greater the
viewing distance from which the sign is viewing distance will be.
understandable. The viewing distance at which a sign
of a particular size is conspicuous and comprehensible
depends on the illumination of the sign and the
amount of detail it contains.
100 x 100 150 x 150 200 x 200 300 x 300 400 x 400
200 x 100 300 x 150 400 x 200 600 x 300 1200 x 400
D - maximum viewing distance in metres (m)
D=hxZ h - overall height (printed area) of the signboard in
millimetres (mm)
8 m
5 m
Z - distance factor taking into account the sign category, 14 m 22 m 11 m 17 m 23 m
62 m
31 m
47 m
illumination factors and level of detail.
Signs for high and intermediate location level
Signs positioned at the High Level Location are
DCP Fire Extinguisher
intended for all users of a building. Therefore, they 1.8m to 2.5m
shall be installed at a height above 1.8m. This way Reading area:
the presence of people or objects located between 1.2m to 1.5m
the equipment and the user does not obstruct the
visibility of the signs.
Signs located at the Intermediate Location Level are
intended for the user of the identified equipment. Viewing Distance
This signage contains complementary information
advising the correct usage of the equipment and
should therefore be installed at a height of between
1.2 & 1.5m.

For a pictogram or worded safety sign located in a work environment where there is a sufficient lighting and mounted in a reasonably
prominent position. The following requirements for a sign are needed:
• Pictogram size must be at least 15mm per metre of viewing distance
• Text size: Upper case at 5mm per meter of viewing distance; Lower Case at 4mm per meter of viewing distance

INSTALLATION HEIGHT

• Escape route signs - should be installed between 1.8m and 2.5m from floor level to the base of the sign.

• Fire safety signs - must be used at all times placed at the location of each piece of equipment and at the correct height of 1.8m to 2.5m
(or even higher depending on the viewing distance or due to intermediate objects hindering visibility).

• Prohibition, mandatory action and hazard signs - should install in a clear and visible location before encountering the hazard.
Also need to be as near as possible to the risk areas.

MOUNTING TYPES

Single Sided Sign Double Sided Sign Double sided sign Panoramic
Pole or Wall Mounted Wall Mounted Hanging or Pole Mounted Wall Mounted

90 o Viewing Viewing
Area Area 180 o
Viewing
Area Viewing
90 o Viewing Area Area
Area
90 o
Viewing

248 | “WE ARE TRUSTED TO DELIVER QUALITY”