Voided biaxial slabs are reinforced concrete slabs in which voids reduce the amount of concrete. (http://en.wikipedia.org/wiki/Voided_biaxial_slab)
The voided biaxial slabs can be also called BubbleDeck technology, which is a brand. "The BubbleDeck technology comprises a biaxial carrying hollow slab in which plastic balls serves the purposes of eliminating concrete that has no carrying effect. In other words, it removes the non working dead load, while maintaining biaxial strength."(http://www.bubbledeck.com/)
SANAA uses this technology in their project of zulleverin school of management, which reduces the weight of the slab by 30% and also the width of the premier wall which is also functioned as a part of structure in order to achieve a thiner and lighter outlook of the pure white box.
How about the technology's aseismatic performance and it's behavior in earthquake?
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