WEST LAFAYETTE, Ind. - A partnership of leading earthquake engineering researchers from top U.S. and Canadian universities and design professionals from the steel industry have begun the final phase of a three-year project to increase the seismic safety of buildings that use lightweight cold-formed steel for their primary beams and columns.
Funded by a grant from the George E. Brown, Jr. Network for Earthquake Engineering Simulation Network (NEES), the researchers have already developed a series of computational models to determine how a complete building structure will perform during an earthquake.
Headquartered at Purdue's Discovery Park, NEES is a collaborative, 14-site research initiative that aims to improve structural seismic design and reduce the damaging effects of earthquakes and tsunamis. NEES is funded by a $105 million National Science Foundation grant. NEEScomm is the operations unit at Purdue.
The initial stage in the testing involved the construction of a two-story structure and then testing on a "shake table" at the University of Buffalo. The building will undergo the rigors of a controlled earthquake to determine how it performs. There will be two phases to the shake table testing: Phase One is taking place June 12-14 and will test only the structural components, which include the cold-formed steel skeleton and the OSB (oriented strand board) sheathing for the floor diaphragm and roof; Phase Two will add non-structural components like stairs, gypsum sheathing and interior partitions. The objective is to advance cold-formed steel light-frame design in buildings to the next level and equip engineers to implement these performance-based seismic designs in their projects.
The data from the research is published on NEEShub, the cyberinfrastructure component of the NEES network. The NEEShub platform is powered by Purdue's HUBzero software.
The research team is led by Benjamin Schafer of the Department of Civil Engineering at Johns Hopkins University and a longtime member of two standards-developing committees of the American Iron and Steel Institute (AISI) - the Committee on Specifications and the Committee on Framing Standards. Schafer's team includes additional researchers from Johns Hopkins and Bucknell University, with input from colleagues at the University of North Texas, Virginia Tech and McGill University in Montreal, Canada.
Several steel industry partners are participating in the project, providing technical expertise, donated materials and additional funding. The steel industry partners include the American Iron and Steel Institute, Bentley Systems Inc., ClarkDietrich Building Systems, Devco Engineering Inc., DSi Engineering, Mader Construction Co. Inc., Simpson Strong-Tie Co. Inc., the Steel Framing Industry Association, and the Steel Stud Manufacturers Association.
"We appreciate the valuable technical and economic input that our industry partners have provided," said Schafer, the project's principal investigator.
"This project has already resulted in several innovations that will immediately impact seismic cold-formed steel design standards, making buildings safer," Schafer said. "Now comes the fun part - getting to see how all the research plays out on the shake table. One of the important deliverables from this project will be the transfer of our research results into an open-source software framework. The data will then be made available to engineers, allowing them to see how their structural system designs will respond to an earthquake before they are constructed. This software will create cost efficiencies and potentially save lives."
In fact, project data is already on NEEShub. Preliminary testing conducted on building components (shear walls in particular) have been posted for engineers to examine. Initial uploading of the test data happens immediately after the tests. Fully curated data will happen over the course of this summer.
Schafer said Johns Hopkins graduate student Kara Peterman is on site at the University of Buffalo Structural Engineering and Earthquake Simulation Laboratory (SEESL) and is providing updates on the structure's construction and blog entries at the CFS NEES blog.
Project Background
The award is an outcome of the National Science Foundation 09-524 program solicitation for the George E. Brown, Jr. Network for Earthquake Engineering Simulation Research competition. The title of the project is "NEES-CR: Enabling Performance-Based Seismic Design of Multi-Story Cold-Formed Steel Structures," award number 1041578.
The analysis and initial testing for the project began in late 2010 and took place at John Hopkins University and the University of North Texas. The focus has now moved to the University of Buffalo, where construction of the two-story test building was recently completed. Full-scale shake-table testing is expected to take place in the summer.
About the George E. Brown, Jr. Network for Earthquake Engineering Simulation Network (NEES) at Purdue
Since Oct. 1, 2009, the NEES operations and cyberinfrastructure headquarters has been at Purdue University's Discovery Park, the result of National Science Foundation cooperative agreement #CMMI-0927178. The 14 participating universities hosting NEES laboratories include Cornell University; Lehigh University; Oregon State University; Rensselaer Polytechnic Institute; University at Buffalo, SUNY; University of California, Berkeley; University of California, Davis; University of California, Los Angeles; University of California San Diego; University of California Santa Barbara; University of Illinois, Urbana-Champaign; University of Minnesota; University of Nevada, Reno; and University of Texas, Austin. In addition, 5 institutions involved as administrative partners include: San Jose State University, University of Washington, University of Kansas, University of South Carolina, and the Fermi National Laboratory.
Related Stories
| Jun 11, 2014
Esri’s interactive guide to 2014 World Cup Stadiums
California-based Esri, a supplier of GIS software, created a nifty interactive map that gives viewers a satellite perspective of Brazil’s many new stadiums.
| Jun 10, 2014
Site optimization: Paving the way for smoother land development projects
The biggest cost differential when dealing in site development from one site to another is the earthwork. So, when selecting a site, it is critical to not only take into account the initial purchase price of the property, but also what sort of investment it will take to prep the site for development.
| Jun 10, 2014
Gaudi’s famed cathedral on ice: Dutch students to construct 132-foot ice replica of Sagrada Familia
"Sagrada Familia in Ice" will be built with a mixture of wooden fibers and plain ice that is three times stronger than ice.
| Jun 10, 2014
Built-in balcony: New skylight windows can fold out to create a patio
Roof window manufacturer Fakro offers a skylight window system that quickly converts into an open-air balcony.
| Jun 10, 2014
New York's first-ever public housing for visually-impaired begins upgrade
Selis Manor is the first government-funded residence for the vision-impaired and disabled in New York City. MAP’s design eases crowding, increases security, and separates residents and visitors.
| Jun 9, 2014
6 design strategies for integrating living and learning on campus
Higher education is rapidly evolving. As we use planning and design to help our clients navigate major shifts in culture, technology, and funding, it is essential to focus on strategies that help foster an education that is relevant after graduation. One way to promote relevance is to strengthen the bond between academic disciplines and the campus residential life experience.
| Jun 9, 2014
Green Building Initiative launches Green Globes for Sustainable Interiors program
The new program focuses exclusively on the sustainable design and construction of interior spaces in nonresidential buildings and can be pursued by both building owners and individual lessees of commercial spaces.
| Jun 9, 2014
10 projects named 2014 AIA Small Project Award winners
Yale's funky new Ground café and a pavilion made from 53,780 recycled plastic bottles are among the nation's best new small projects.
| Jun 9, 2014
Eli Broad museum files $19.8 million lawsuit over delays
The museum, meant to hold Eli and Edythe Borad's collection of contemporary art, is suing the German company Seele for what the museum describes as delays in the creation of building blocks for its façade.
| Jun 8, 2014
What’s the word of the day? It’s all about ‘resiliency’
Just for the sake of argument, let’s put aside the rhetoric about climate change—whether it’s actually happening, whether it’s a result of manmade activity—and agree that we are experiencing some pretty dramatic weather events that are having huge impacts on populations here in the U.S. and worldwide.