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precast concrete

A load-bearing staircase frame built of concrete that was formed and dried away from the building site.

A precast concrete staircase is a set of steps in a built object whose supporting framework is built of prefabricated concrete that was cast away from the construction site and delivered in segments or as a whole unit. Staircases of this material are most common in structures which are themselves framed in precast concrete, especially parking decks and also in many tower blocks (although these types also very commonly use reinforced concrete).

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