New Code Provisions for Long Term Deflection Calculations

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Title: New Code Provisions for Long Term Deflection Calculations

Author(s): R. H. Scott and A. W. Beeby

Publication: Special Publication

Volume: 225

Issue:

Appears on pages(s): 119-132

Keywords: codes and standards; deflection control; structural concrete

Date: 3/1/2005

Abstract:
Current code provisions for deflection calculations in reinforced concrete beams and slabs are discussed. A comprehensive series of laboratory tests to investigate long term tension stiffening effects is summarised, results from which indicated that tension stiffening decays much more rapidly than was previously understood. Revised code provisions are proposed based on this finding.