Precast concrete is concrete cast and cured into structural or architectural components, such as wall panels, beams, columns and cladding units, in a controlled factory or yard setting before being transported to the building site for assembly, rather than poured in place. The controlled casting environment allows tighter quality control, more consistent finishes and faster on-site erection than cast-in-place concrete, and precast panels and structural frames became especially widespread from the mid-twentieth century onward in both utilitarian industrial construction and, in exposed architectural finishes, in high-design buildings where the precision of the factory-cast surface is itself part of the aesthetic.
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Built from 354 identical prefabricated precast-concrete modules, craned into place and stacked in varying arrangements.
The iconic shells are built from precast concrete ribs, engineered by Ove Arup after years of Utzons research into a buildable geometry.
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Wikimedia FoundationWikipedia: Precast concrete, introductory paragraph, https://en.wikipedia.org/wiki/Precast_concreteQuote, Wikipedia: Precast concrete, introductory paragraph, https://en.wikipedia.org/wiki/Precast_concrete
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beams, and wall panels, floors, roofs, and piles.
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