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Uncertainty caused variability in preliminary structural design of buildings

Fröderberg, Martin LU and Thelandersson, Sven LU (2015) In Structural Safety 52. p.183-193
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to specialist publication or newspaper
publication status
published
subject
keywords
Human error, Uncertainty, Structural design, Round robin, Structural, safety
categories
Popular Science
in
Structural Safety
volume
52
pages
183 - 193
publisher
Elsevier
external identifiers
  • wos:000347581500006
  • scopus:84918584040
ISSN
0167-4730
DOI
10.1016/j.strusafe.2014.02.001
language
English
LU publication?
yes
id
fed39835-d6d0-4c4e-ba29-3c84b2aa9dc8 (old id 5076089)
date added to LUP
2015-02-25 17:21:29
date last changed
2017-08-13 03:53:08
@misc{fed39835-d6d0-4c4e-ba29-3c84b2aa9dc8,
  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.},
  author       = {Fröderberg, Martin and Thelandersson, Sven},
  issn         = {0167-4730},
  keyword      = {Human error,Uncertainty,Structural design,Round robin,Structural,safety},
  language     = {eng},
  pages        = {183--193},
  publisher    = {Elsevier},
  series       = {Structural Safety},
  title        = {Uncertainty caused variability in preliminary structural design of buildings},
  url          = {http://dx.doi.org/10.1016/j.strusafe.2014.02.001},
  volume       = {52},
  year         = {2015},
}