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Title: ACI Code Requirements for Deflection Control: A Critical Review

Author(s): A. Scanlon, D. R. Cagley Orsak, and D. R. Buettner

Publication: Symposium Paper

Volume: 203


Appears on pages(s): 1-14

Keywords: beams; building code; cracking; deflection; minimumthickness; slabs

DOI: 10.14359/10801

Date: 8/1/2001

AC1 Building Code requirements for deflection control are critically reviewed. Provisions for minimum thickness, deflection computations, and permissible computed deflections are reviewed. Differences in the approaches to deflection control for one-way and two-way construction are identified. Limitations in the application of the prescribed deflection calculation method are discussed. Results of a survey of consulting firms concerning deflection control in design offices are presented. The paper concludes by suggesting possible directions for future changes in building code requirements for deflection control.