Young Curly Brunette Girl With A Chair In Front Of The Wooden Door

Glass doors pose the risk of unintentional collision if a person believes the door to be open when it is closed, or is unaware there is a door there at all. This risk may be particularly proclaimed with sliding glass doors because they often have large single panes which are hard to see . To prevent injury from glass doors, stickers or other types of warnings are sometimes placed on the glass surface to make it more visible. For instance, in the UK, Regulation 14 of the Workplace (Health and Safety Regulations) 1992 requires the marking of windows and glass doors to make them conspicuous.
Fire
Special purpose fire doors are often employed in buildings to reduce the overall risk of fire, particularly by preventing the spread of fire and smoke. In cases where they are improperly installed, employed, or tampered with, the risk of fire can be increased. Door closers are sometimes used to ensure fire doors remain closed.