Effect of Relative Humidity on Absolute and Differential Shortening of Columns and Walls in Multistory Reinforced Concrete Buildings
Publication: Practice Periodical on Structural Design and Construction
Volume 10, Issue 2
Abstract
In tall, multistory reinforced concrete buildings, absolute and differential shortening between adjacent vertical members has become a significant problem during the recent past due to the use of high performance concrete and more advanced design techniques that resulted in smaller member sizes. The failure of nonstructural elements such as claddings has been observed in several structures constructed in the past few decades. The factors that cause these problems could be identified as time-dependent creep and shrinkage coupled with elastic shortening. Both creep and shrinkage depend on the relative humidity of the surrounding environment. This paper discusses the effect of relative humidity on absolute and differential shortening of vertical elements in reinforced concrete buildings.
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References
British Standards Institution. (1984). “Code of practice for floor loads on buildings.” BS6399: Part 1, London.
British Standards Institution. (1985a). “The structural use of concrete (code of practice for special circumstances).” BS8110: Part 2, Section 7, 1–5.
British Standards Institution. (1985b). “The structural use of concrete (design charts for singly reinforced beams, doubly reinforced beams, and rectangular columns).” BS8110: Part 3, London, 7–50.
British Standards Institution. (1997). “The structural use of concrete (code of practice for design and construction).” BS8110: Part 1, Section 3, London, 19–59.
Fintel, M., and Khan, F. R. (1969). “Effects of column creep and shrinkage in tall structures—prediction of inelastic column shortening.” ACI J., 66, 957–967.
Ghosh, S. K. (1996). “Chapter 4: Estimation and accommodation of column length changes in tall buildings.” Large concrete buildings, B. V. Rangan and R. F. Warner, eds. Longman, Harlow, U.K.
Jayasena, W. M. V. P. K. (2002). “Effects of axial shortening of columns in tall buildings.” MS thesis, Dept. of Civil Engineering, University of Moratuwa, Moratuwa, Sri Lanka.
Microfeap II, P1 module, release 3.3: A module for static analysis of 2D truss, frame, and shear wall structural systems—Technical manual. (1985). Asian Institute of Technology, Bangkok, Thailand.
Plewes, W. G. (1977). “CBD—185: Failure of brick facing on high-rise buildings.” Canadian Building Digest, ⟨http://irc.nrc-cnrc.gc.ca/cbd/cbd185e.html⟩ (Aug. 2002).
Standards Australia. (1989). “Minimum design loads on structures. Part 2: Wind loads.” AS1170.2-1989, New South Wales, Australia, 36–44.
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© 2005 ASCE.
History
Received: Feb 28, 2003
Accepted: Jan 16, 2004
Published online: May 1, 2005
Published in print: May 2005
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