Sensitivity of out-of-plane capacity to input parameters of Nepali URM walls

Nicola Giordano, Flavia De Luca, Prem Nath Maskey, Anastasios Sextos

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Out-of-plane (OOP) is a recurrent seismic damage pattern for unreinforced masonry (URM) constructions. It is usually triggered by insufficient wall-to-wall and wall-to-floor connections. This situation is rather common in Nepal where most of the URM buildings lack of seismic detailing. Therefore, to execute a reliable vulnerability assessment, OOP needs to be considered when dealing with Nepalese masonry constructions. This is generally done by calculating the wall OOP capacity in terms of a force-displacement (F-D) curve. By adopting an analytical solution previously developed by the authors, this work investigates the sensitivity of out-of-plane failure to uncertain input parameters of Nepali URMs. A representative wall from a typical single-story brick-in-mud school building is considered in the analysis. Tornado diagrams are adopted to quantify the influence of the seven relevant input quantities over the OOP force-displacement curve. The results of the sensitivity analysis can be used to prioritize data collection and material testing for the most influential parameters.
Original languageEnglish
Title of host publicationXVIII Convegno Anidis
Subtitle of host publicationL'ingegneria sismica in Italia 15-19 September 2019
PublisherPisa: Università da Pisa
Number of pages8
ISBN (Print)9788833392561
Publication statusPublished - 30 Sept 2019
EventANIDIS 2019 - XVIII Conference: Seismic Engineering - Ascoli Piceno, Italy
Duration: 15 Sept 201919 Oct 2019
Conference number: 18


ConferenceANIDIS 2019 - XVIII Conference
CityAscoli Piceno
Internet address


  • Sensitivity analysis
  • tornado diagram
  • out-of-plane
  • masonry
  • Nepal
  • schools


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