Windows, hatches, and other openings in buildings of residency and passage have to be designed to bear human weight in case there is a risk of falling. Glass walls and windows with a window surface closer than 700 mm to the floor require a inner safety glass.
Windows that have a glass surface less than 700 mm from the floor, and which are situated by passageways, require an outer safety glass as well (laminated or tempered glass).
Stairway windows, where floor levels are situated by the windows without guard railings, require the use of 4+4 laminated and railing-supporting durable safety glass up to the height of 700 mm as the inner insulation glass.
Cut wounds caused by glass are the likeliest in areas where high number of people passes through in a short space of time, e.g., stairways and corridors as well as doors and entrances. Such areas require safety glass to be installed up to the height of 700 mm, and for doors 300 mm to the sides of door window jambs and up to the height of 1200 mm.
In addition to its safety properties, glass is also part of a building’s appearance. Glass has many purposes, and by selecting, e.g., special coatings or color laminates, the glass wall is easily given restricted transparency, eye protection from the sun, or used for effect in the facade.
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