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Structural safety uncertainties in codes of practice for reinforced concrete

Neocleous, K., Pilakoutas, K. and Waldron , P. (2004) Structural safety uncertainties in codes of practice for reinforced concrete. Structural Engineer, 82 (8). pp. 28-33. ISSN 1466-5123


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The limit-state design approach, currently used in codified design of concrete structures reinforced with steel reinforcement, is based on semi-probabilistic procedures. Although modern concrete codes of practice are more sophisticated than older codes based on the permissible stress approach, they still have fundamental uncertainties with regards to structural safety. The work reported in this paper investigates these uncertainties for the BS 8110 and Eurocode-2 codes of practice by performing a structural reliability assessment using the Monte-Carlo Simulation method in conjunction with the Latin Hypercube and Conditional Expectation variance reduction techniques. The assessment considers both the flexural and shear failure modes. In the case of BS 8110, it is shown that it may be more appropriate to increase the characteristic value of the tensile strength of steel reinforcement rather than to use the reduced partial safety factor of 1.05. © Kyriacos Neocleous, Kyprous Pilakoutas, Peter Waldron.

Item Type: Article
Copyright, Publisher and Additional Information: © 2004 Institution of Structural Engineers. This is an author produced version of a paper subsequently published in Structural Engineer. Uploaded in accordance with the publisher's self-archiving policy. The definitive version can be found here - http://www.istructe.org/thestructuralengineer/
Keywords: Codes (standards); Compressive strength; Computer simulation; Concrete construction; Ductility; Failure analysis; Monte Carlo methods; Reliability; Steel; Stress analysis; Structural analysis; Structures (built objects); Tensile strength, BS 8110; Ductile failure; Eurocode2; Structural safety, Reinforced concrete
Institution: The University of Sheffield
Academic Units: The University of Sheffield > University of Sheffield Research Centres and Institutes > Centre for Cement and Concrete (Sheffield)
The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield)
Depositing User: Prof Kypros Pilakoutas
Date Deposited: 02 Feb 2011 16:29
Last Modified: 08 Feb 2013 17:30
Published Version: http://www.istructe.org/thestructuralengineer/
Status: Published
Publisher: Institution of Structural Engineers
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/42812

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