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The platform and stairs usually consist of open steel gratings, to prevent the build-up of ice, snow, and leaves. Railings are usually provided on each of the levels, but as fire escapes are designed for emergency use only, these railings often do not need to meet the same standards as railings in other contexts.
An exterior stairway is a stair in a separate structure attached to the rest of the building body, [3] and can either be enclosed or exposed to the elements. Such temporary exposed stairways are sometimes used in conjunction with scaffolding on construction sites, or permanently as an emergency exit .
A stair flight is a run of stairs or steps between landings. A stairwell is a compartment extending vertically through a building in which stairs are placed. A stair hall is the stairs, landings, hallways, or other portions of the public hall through which it is necessary to pass when going from the entrance floor to the other floors of a building.
A metal safety rail has been added to the outside of this cantilevered stone staircase. A cantilever is a beam , which is anchored at only one end. Thus cantilevered stairs have a "floating" appearance, and they may be composed of different materials, such as wood , glass , stone , or stainless steel .
Bridge parapets may be made from any material, but structural steel, aluminium, timber and reinforced concrete are common. They may be of solid or framed construction. [6] In European standards, parapets are defined as a sub-category of "vehicle restraint systems" or "pedestrian restraint systems".
A modern handrail made of metal. A handrail is a rail that is designed to be grasped by the hand so as to provide safety or support. [1] In Britain, handrails are referred to as banisters.
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