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nees@berkeley Quasistatic Test Scheduled for Feb 10

A quasistatic test will be conducted on February 10, 2014 in the nees@berkeley laboratory at the Richmond Field Station on a full scale, two story pre-1988 steel concentrically braced frame. Testing is expected to start around 1:00 pm and continue for at least 3-5 hours.

The test on February 10 will be the second experimental test done in the nees@berkeley lab for this study, exploring the adequacy of existing braced frames designed prior to the 1988 Uniform Building Code and their ability to resist seismic demands. The second test involves the repair of the first braced frame tested in October of 2013, replacing the damaged second story braces and gussets with the same sections and sizes, while adding net section reinforcement at all brace connections. The braces have been filled with low strength concrete to address the early fracture observed during the first test, to explore unobserved avenues of damage that were outweighed by the braces’ early fracture.

Watch a new summary video about the project with footage from the October test.


This test is a part of the George E. Brown Network for Earthquake Engineering Simulation Research (NEESR) project Collaborative Developments for the Seismic Rehabilitation of Vulnerable Braced Frames that is being led at the University of Washington by Principal Investigator Dr. Charles W. Roeder, with co-investigators Dr. Jeffrey Berman at the University of Washington, Dr. Dawn Lehman at the University of Washington, and Dr. Stephen A. Mahin at the University of California, Berkeley. The nees@berkeley tests are conducted by PhD student, Barb Simpson, with the support from post-doctoral researcher, Jiun-Wei Lai. This research is funded by the National Science Foundation (NSF).

The test can be viewed in-person or by Real Time Data Viewer (RDV):
Instructions for the RDV
Live video feeds (Cameras 1, 2 and 5)

Those wanting to attend in person at the nees@berkeley lab are welcome but must RSVP to PEER.

For more information about the test, contact Barb Simpson.