Fragility of Mechanical, Electrical, and Plumbing Equipment Journal Article uri icon



  • A study for the Multidisciplinary Center for Earthquake Engineering Research (MCEER) provides fragility functions for 52 varieties of mechanical, electrical, and plumbing (MEP) equipment commonly found in commercial and industrial buildings. For the majority of equipment categories, the MCEER study provides multiple fragility functions, reflecting important effects of bracing, anchorage, interaction, etc. The fragility functions express the probability that the component would be rendered inoperative as a function of floor acceleration. That work did not include the evidence underlying the fragility functions. As part of the ATC-58 effort to bring second-generation performance-based earthquake engineering to professional practice, we have compiled the original MCEER specimen-level performance data into a publicly accessible database and validate many of the original fragility functions. In some cases, new fragility functions derived by ATC-58 methods show somewhat closer agreement with the raw data. Average-condition fragility functions are developed here; we will address in subsequent work the effect of potentially important—arguably crucial—performance-modifying factors such as poor anchorage and interaction.

publication date

  • May 1, 2010

has restriction

  • closed

Date in CU Experts

  • March 30, 2014 8:22 AM

Full Author List

  • Porter K; Johnson G; Sheppard R; Bachman R

author count

  • 4

Other Profiles

International Standard Serial Number (ISSN)

  • 8755-2930

Electronic International Standard Serial Number (EISSN)

  • 1944-8201

Additional Document Info

start page

  • 451

end page

  • 472


  • 26


  • 2