Voided Biaxial Slab
Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of concrete.
While concrete has been used for thousands of years, the use of reinforced concrete is a relatively recent invention, usually attributed to Joseph-Louis Lambot in 1848. Joseph Monier, a French gardener, patented a design for reinforced garden tubs in 1868, and later patented reinforced concrete beams and posts for railway and road guardrails.
The main obstacle with concrete constructions, in case of horizontal slabs, is the high weight, which limits the span. For this reason major developments of reinforced concrete have focused on enhancing the span, either by reducing the weight or overcoming concrete's natural weakness in tension.
An early example is the Pantheon in Rome, build 125 AD. Although not reinforced, coffers were used to reduce the weight.
Read more about Voided Biaxial Slab: Prestressed Concrete, Hollow-core Slabs, Biaxial Slabs, Composition, Theory, Applications, Examples, Prizes and Awards, See Also
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