Collapse Indicators for Existing Nonductile Concrete Frame Buildings with Varying Column and Frame Characteristics


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Is Resilient Engineering Sustainable?

Sarah attempts to answer this question for seismic design of buildings in a new paper accepted by the Journal of Structural Engineering. 

A teaser for the results in the paper. Check out the full manuscript! 

A teaser for the results in the paper. Check out the full manuscript! 

Orlando, Cody and Travis haVE new positionS

Orlando Arroyo has joined the faculty as an Assistant Professor at Universidad de la Sabana, near Bogota Colombia. 

Cody Harrington is working in the Truckee office of Gabbart and Woods. 

Travis Marcilla is designing modern homes at phStructure. 

Congratulations guys! We'll miss you!


Snow loads papers published by Journal of Structural Engineering


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Presentations at World Conference in Earthquake Engineering in Chile

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Congratulations Dr. Sarah!

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A fun Saturday with Habitat for Humanity!

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Congratulations to Dr. Cody and Dr. Orlando!


Congratulations, Cody! 

Orlando Arroyo defended his thesis at Pontificia Universidad Catolica de Chile  on "OPTIMIZACIÓN DEL DISEÑO DE UN EDIFICIO DE PÓRTICOS DE HORMIGÓN ARMADO PARA MINIMIZAR EL DRIFT" 

Congratulations, Orlando! 


Reliability-Targeted Snow Loads for Roof Design

Two papers about reliability-targeted snow loads for roof design are forthcoming in the Journal of Structural Engineering. These cover approaches to determining ground snow loads where historical record is limited and topography is complex, and methods to ensure that roof reliability is consistent across different geographical contexts.  

(A complete version of both papers with figures embedded will be available shortly). 

Ratio of the computed reliability-targeted ground snow load to the 50-year ground snow load at 327 sites in Colorado.

Ratio of the computed reliability-targeted ground snow load to the 50-year ground snow load at 327 sites in Colorado.

Sarah to share her experiences in DC last spring

Sarah Welsh-Huggins will be participating in a panel discussion on Wednesday, Sept. 28, hosted by CIRES’ Center for Science and Technology Policy Research (CSTPR), exploring the Catalyzing Advocacy in Science and Engineering (CASE) workshop.

The workshop, held over three days in the spring in Washington, D.C., connects young scientists with policy-makers for exposure to science advocacy as an integral component of influencing policy. Sarah attended last spring, as the winner of a campus competition for travel support. 

Check out the full story here

Sarah with Colorado Senator Gardner, Spring 2016 (Photo: Heather Bene)

Integrating Hazard Resistance and Sustainability

Check out Sarah's paper published this summer

Building design and performance are increasingly being scrutinised from perspectives of both sustainability and hazard resistance. However, the approaches taken to consider these perspectives are disconnected; green building rating systems do not consider hazard resistance in their assessments, while performance-based engineering methods have tended to neglect consideration of environmental impacts. This study presents a framework to assess a building’s life-cycle performance in terms of social, environmental and economic impacts using probabilistic approaches, considering the possible occurrence of an earthquake or other extreme event. The framework is illustrated through a case study of an office building in Los Angeles, designed with and without different types of vegetated (green) roofs, and at risk from varying earthquake hazard scenarios. The case study results demonstrate trade-offs between upfront building costs, material choices, hazard resistance and environmental impact.

2016 Natural Hazards Workshop

Several of us participated in the 2016 Natural Hazards Workshop in Broomfield, Colorado this week.  

Sarah Welsh-Huggins, Ph.D. candidate, organized a panel session entitled Building Pathways to More Resilient and Sustainable Infrastructure. We had a great discussion on what it means to build resilient and sustainable infrastructure and communities. Many thanks to the panelists, Jamie Padgett, Sarah Welsh-Huggins, Beth Grote and Greg Guibert. 

Panel at Natural Hazards Workshop. 

Panel at Natural Hazards Workshop. 

The panel session also incorporated some artistry depicting our communities of the future.