Statistical Evaluation of Minimum Thickness Provisions for Slab Deflection Control

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Statistical Evaluation of Minimum Thickness Provisions for Slab Deflection Control

Author(s): Raul Bertero and Agustin Bertero

Publication: Structural Journal

Volume: 115

Issue: 6

Appears on pages(s): 1659-1670

Keywords: deflection control; minimum thickness; serviceability; two-way slabs

Date: 11/1/2018

Abstract:
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.