Long-Term Deflection of Reinforced Concrete Flat Slabs and Plates


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Title: Long-Term Deflection of Reinforced Concrete Flat Slabs and Plates

Author(s): P. J. Taylor and J. L. Heiman

Publication: Journal Proceedings

Volume: 74

Issue: 11

Appears on pages(s): 556-561

Keywords: concrete slabs: cracking (fracturing) ; creep properties; deflection; flat concrete plates: flat concrete;slabs; floors; loads (forces); load tests (structural); reinforced concrete; shrinkage: structural analysis: structural design.

Date: 11/1/1977

To enable structural designers to make more accurate assessments of the long-term deflection performance of reinforced concrete flat slabs and plates, the deflections of several actual slabs were measured for up to 9 years, and the results were compared with calculated values. It was found that the measured values were up to five times the values calculated by normal methods. A more accurate method of calculation was developed. This paper provides additional research information for one previous investigation, and summarizes others for the purposes of comparison.