Document Type

Article

Language

eng

Format of Original

7 p.

Publication Date

3-1-2002

Publisher

American Concrete Institute

Source Publication

ACI Structural Journal

Source ISSN

0889-3241

Original Item ID

doi: 10.14359/11546

Abstract

The top bar effect in reinforced concrete is a widely recognized phenomenon. Currently, the ACI Building Code prescribes a 30% increase in the development length of top cast reinforcing bars. No such provision is required for strands in prestressed concrete members. In this paper, the top bar effect for prestressing strands is introduced. Parameters affecting top bar phenomena in prestressed concrete piles are identified, and strategies for reducing this effect are presented. Finally, for the first time, the application of a top bar effect factor for prestressed concrete development length calculations, similar to the one applied in reinforced concrete structural elements, is proposed.

Comments

Published version. ACI Structural Journal, Vol. 99, No. 2 (March 1, 2002): 208-214. DOI. © American Concrete Institute 2002. Used with permission.

Share

COinS