iron
A staircase supported by cast, wrought, or other iron members, distinguished from a steel staircase frame.
An iron staircase is a set of steps in a built object whose supporting framework is built of cast, wrought, or other iron distinct from steel. The form and mechanical properties of the iron influence the suitable stairway configuration, and iron is used for freestanding staircases (like many helical stairways for example). It is also useful for staircases that bridge a wide space without supporting columns in the middle.
Iron forms the supporting stair members. Cast and wrought iron are included, although their mechanical properties differ.
A surface coating or floor finish does not determine the frame material. A steel supporting frame belongs to the separate steel staircase definition.
iron Photos
Related definitions
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hewn stone
A staircase cut into natural rock already present at the site, whether exposed or covered by a floor finish. -
masonry
A load-bearing staircase frame built of bricks, rocks, or other hard pieces stacked and joined together. -
precast concrete
A staircase supported by concrete components cast away from the construction site and delivered in sections or as a complete unit. -
reinforced concrete
A staircase supported by steel-reinforced concrete, usually poured in place and often integrated with the building frame. -
steel
A staircase whose supporting framework is made from steel members, regardless of its nonstructural finish. -
wood
A staircase whose supporting framework is made of wood, distinct from a wooden finish over another structural material.