Uncertainty caused variability in preliminary structural design of buildings

Research output: Contribution to specialist publication or newspaperSpecialist publication article

Abstract

Many decisions in the everyday work of the structural engineer are taken under the influence of uncertainties. The degree of uncertainty affects the quality and variability of the outcome of the structural design work. The effect of uncertainties related to knowledge and experience of the structural engineer was studied in a round robin investigation. Despite a relatively well defined task, the results varied considerably among the 16 participating Swedish structural engineers that performed this task; a structural check, load takedown and stability calculation for a five storey concrete building. The column load of a specific position differed by a factor of three between lowest and highest suggested value. For the stabilizing forces the values varied even more. The uncertainties connected to the structural engineer were estimated by introducing the term Engineering Modeling Uncertainty, divided into a structural model part and a load part. These uncertainties are shown to have a large effect on structural safety. The significant variability in results and the consequence on structural safety of this investigation emphasizes the importance of documentation and communication of all the assumptions made by the structural engineer - even the apparently obvious ones. (C) 2014 Elsevier Ltd. All rights reserved.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Building Technologies

Keywords

  • Human error, Uncertainty, Structural design, Round robin, Structural, safety
Original languageEnglish
Pages183-193
Volume52
Specialist publication or newspaperStructural Safety
PublisherElsevier
StatePublished - 2015
Publication categoryPopular science