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Last edited 06 Oct 2020
Manifestation is a treatment that can be applied to glass windows, doors, partitions and any other large expanses of clear glass, in order to make the glass visible, preventing injury through collisions. It can also help enhance privacy and can be decorative.
|Transparent glazing with which people are likely to come into contact while moving around in or about the building, shall incorporate features which make it apparent.|
Approved document K, Protection from falling, collision and impact, suggests that this requirement will be satisfied by including permanent means of indicating the presence of large uninterrupted areas of transparent glazing, and Section 7 of the approved document provides further details, requiring that either:
|They are clearly defined with glass manifestation on the glass at two levels; between 850-1,000 mm and 1,400-1,600 mm above the floor, contrasting visually with the background seen through the glass (both inside and out) in all lighting conditions. Manifestation takes the form of logo or sign at least 150 mm high (repeated if on a glazed screen), or a decorative feature such as broken lines or continuous bands, at least 50 mm high.|
The most simple manifestation is two rows of 50-75 mm white or frosted dots, however, the regulations do not dictate the appearance of the manifestation. Standard designs of dots, squares and simple bands are common, but large panels in etched or printed film with cut-out clear spaces, or branded manifestation with logos or other designs are also acceptable.
In addition, doors should be apparent from the side, if they can be held open, and where glazed doors are beside a glazed screen, they should be marked with a high contrast strip along the top and at both sides.
The approved document to Part M of the Building Regulations - access to and use of buildings - states that people with visual impairment should be in no doubt as to the location of glass doors and screens, and steps should be taken to avoid people being harmed by walking into them. This requirement is satisfied if they comply with approved document K, section 7.
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