Title: Statistical Evaluation of Minimum Thickness Provisions for Slab Deflection Control
Author(s): Raul Bertero and Agustin Bertero
Publication: Structural Journal
Appears on pages(s): 1659-1670
Keywords: deflection control; minimum thickness; serviceability; two-way slabs
Minimum thickness provisions are widely used in engineering practice to comply with the serviceability requirements for two-way slabs without calculating the expected deflection under service conditions. However, concern has been raised about the effectiveness that the 45-year-old provisions in ACI 318 have in controlling slab deflections within the permissible values. Using the finite element method and the provisions of ACI 318-14, this paper evaluates from a statistical standpoint the computed deflections of two-way slabs designed to comply with the minimum thickness requirements in ACI 318-14. Based on the results, recommendations are made for future revisions of the Code.