How Thin is Too Thin? Evaluating slab thickness in reinforced concrete flat-plate construction

July 30, 2014
Publication: Construction Specifier Express - CSI's Technical Newsletter...
Author(s): Dimitri Papagiannakis

Abstract; Reinforced concrete flat-plate construction is popular among mid- and high-rise residential construction projects. It provides a great deal of flexibility in the placement of the structure’s vertical load-carrying elements (i.e. columns and walls) without sacrificing the efficiency of the floor framing—as could potentially be the case with steel or masonry. In the project’s early stages, structural engineers are often asked by architects and owners how thin the slabs in a flat-plate system can be. The question is usually motivated by a desire to achieve taller floor-to-ceiling heights, which can be an important selling feature to end users. There are building code provisions that address minimum slab thickness as a function of the span length and span condition (e.g. continuous versus discontinuous, etc.). There are also practical and economic factors that often influence the design of concrete flat-plate slabs

Services: Structural Design
Keywords: Concrete Slab