SEISMIC RESEARCH PROJECT
UCSD Seismic Research on Building Nonstructural Components
The project was funded by the National Science Foundation, as well as public and private stakeholders. The purpose was to understand how nonstructural components and systems interact with a building and with each other during an earthquake. Additionally, researchers evaluated the post-earthquake fire performance of critical systems. A full range of NCSs including a functioning passenger elevator, piping, sprinklers, HVAC, interior walls, suspended ceilings, cladding systems and building content as well as both passive and active fire systems were installed for evaluation.
Hilti’s involvement in the project started in the conceptual phase. In 2006, Hilti researchers had just concluded collaboration with the University of California, San Diego on anchored pipe seismic tests in a seven-story structure. The research team realized that there was a much larger opportunity and need to study the interaction of nonstructural components and building systems, as well as post-earthquake fire protection system performance.
Testing a complete building system at full scale under earthquake and fire loads, provides Hilti a unique opportunity to see what happens when all the systems are connected together. For example, the pipe system is supported by a strut and anchorage system which is protected with firestop as it penetrates a fire-rated wall. By approaching the NCS at the system level, Hilti researchers and engineers will be able to see how our products work together across the system. Data collected from this project will allow us to validate our predictions based on current building code methodologies and from in-house test results obtained at Hilti’s research and development facilities around the world.
Below is a summary of the testing sequence that was performed on the five-story building: