Fault Tree–Based Reliability Analysis of Reinforced Concrete Elements in an Institutional Building

Authors
  • SAMUEL AKINGBONMIRE

    Federal University Of Technology, Akure, Ondo State

Keywords:
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Abstract

This paper evaluated fault tree-based reliability analysis of failure of reinforced structural elements of an institutional building. The compressive strength of each of the structural elements of the building (slab, column and beam) were analysed with first order reliability method (FORM) by reliability software called CalREL (a coded algorithm). The reliability indices and probabilities of failure obtained were further analysed using fault tree analysis (FTA), which is a valuable tool for understanding and analyzing the reliability and failure modes of complex systems. Seven criteria of failure (failure beams due to concrete, steel, shear and deflection; failure of slab due to applied moment and deflection; and failure due to columns) were considered. Qualitative and quantitative analysis (Boolean algebra) techniques were deployed. The results showed that for the entire building system, the reliability of the elements was 96.5% and about 4% of the elements may fail. Critical examination of the system showed that the columns need to be scheduled for maintenance to avoid eventual collapse.

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2026-06-25
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How to Cite

Fault Tree–Based Reliability Analysis of Reinforced Concrete Elements in an Institutional Building. (2026). FUTA JOURNAL OF ENGINEERING AND ENGINEERING TECHNOLOGY, 20(2), 37-49. https://doi.org/10.51459/futajeet.2026.20.2.603

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