Voided Slabs


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Title: Voided Slabs

Author(s): Mike Mota

Publication: Concrete International

Volume: 32

Issue: 10

Appears on pages(s): 41-45

Keywords: voided slabs, precast concrete, hollow-core slabs, span

Date: 10/1/2010

Voided slabs, using voids formed by permanent fillers or removable forms, have been used in reinforced concrete floor systems for more than 100 years. The concept is simple: remove concrete mass from areas in the slab where it’s not needed to resist load. As a result of the reduced dead load, voided slabs can span further than their solid counterparts. This article provides a partial review of some early and contemporary systems and concludes with a discussion of a relatively new advancement.