Glass Manifestations
DDA regulations
DDA manifestations are a legal requirement required throughout the work place to comply with building regulations. Glazing should be clearly identified with minimal requirements for 2 rows of 50mm dots, squares, bands or a bespoke design, located between 85cm – 100cm and at between 140cm – 160cm from the floor level on the glass.
Document M States that:
“People with visual impairment should be in no doubt as to the location of the glass entrance doors, especially when they are within a glazed screen. The choice of a different style of manifestation for the door and the glazed screen can help to differentiate between them. The presence of the door should be apparent not only when it is shut but also when it is open. Where it can be held open, steps should be taken to avoid people being harmed by walking into the door.”
How does it affect me?
It is the legal responsibility of the building owner and the occupier to ensure that all glazing complies with the above regulations.
Glass entrance doors and glazed screens will satisfy the requirement laid out in document M if;
- they are clearly defined with manifestation on the glass at two levels, 850 to 1000mm and 1400 to 1600mm above the floor, contrasting visually with the background seen through the glass (both from inside and outside) in all lighting conditions;
- manifestation takes the form of a logo or sign at least 150mm high (repeated if on a glazed screen), or a decorative feature such as broken lines or continuous bands, at least 50mm high;
For more information about the safety of glazing in critical locations, or cut bespoke graphics please contact us.
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