Tests to assess how elevators, fire systems perform in earthquakes

Sep 22, 2011
Two graduate students look on as construction crews pour the roof slab on a five-story building at Englekirk Center. The building will be outfitted to test nonstructural components, including a working elevator, stairs, a sprinkler system and medical equipment. 

Structural engineers at the UC San Diego Jacobs School of Engineering are preparing for a series of earthquake tests focused on nonstructural components, including a functioning elevator, stairs, ceilings, and passive and active fire suppression systems, such as sprinklers and partition walls, in a full-scale, five-story concrete building on the world’s largest outdoor shake table.

The tests performed at the Englekirk Structural Engineering Center at UC San Diego will be the first of their kind in the United States to focus on a broad range of systems and equipment that can malfunction during an earthquake and make it more difficult to evacuate buildings, which can lead to more injuries and deaths.

Construction crews recently completed the five-story structure with a final pouring of the roof slab. Interested members of the media are invited to tour the structure and interview researchers the week of Sept. 26, after which crews will begin installing nonstructural elements.

The structure is uniquely outfitted with nonstructural systems that are found in multi-use office and hospital buildings. The top two floors will feature patient beds, a patient lift, computers and other hospital equipment that are common to California medical facilities, including a complete intensive care unit and surgery suite.

“We know very little about the earthquake and post-earthquake fire performance of nonstructural systems in buildings, and even less about those in hospitals,” said Tara Hutchinson, a professor of structural engineering at the Jacobs School and principal investigator for the component of the testing program supported by the National Science Foundation. “Meanwhile, lives and property are being lost due to nonstructural damage, even under moderate seismic events.”

“While building codes in California have attempted to address this by strengthening the requirements for nonstructural components in recent years, components designed to these new requirements have not yet been tested in strong earthquakes,” Hutchinson said. “These tests will help fill this gap in knowledge,” she added.

At 25 ft. by 40 ft., the UC San Diego-Network for Engineering Simulation Outdoor Shake Table is the largest shake table in the United States and the largest outdoor in the world.  The powerful hydraulic actuators at UC San Diego’s facility can simulate ground motion speeds up to six ft. per second, allowing researchers to create realistic simulations of the most devastating earthquakes on record.

Once construction crews install all non-structural components, engineers will subject the entire five-story building to large simulated earthquakes and fire tests from January through March 2012. Media will be invited to observe key tests during this time and should contact the press office at the Jacobs School of Engineering for updates as the test schedule is developed.

Explore further: PsiKick's batteryless sensors poised for coming 'Internet of things'

add to favorites email to friend print save as pdf

Related Stories

Protecting lives, buildings from earthquakes

Jan 10, 2011

Several major earthquake events around the world over the last few years have led to significant damage and loss of lives. Many of these quakes caused buildings to collapse related to the construction quality ...

Recommended for you

Large streams of data warn cars, banks and oil drillers

Apr 16, 2014

Better warning systems that alert motorists to a collision, make banks aware of the risk of losses on bad customers, and tell oil companies about potential problems with new drilling. This is the aim of AMIDST, the EU project ...

User comments : 0

More news stories

Venture investments jump to $9.5B in 1Q

Funding for U.S. startup companies soared 57 percent in the first quarter to a level not seen since 2001, as venture capitalists piled more money into an increasing number of deals, according to a report due out Friday.

White House updating online privacy policy

A new Obama administration privacy policy out Friday explains how the government will gather the user data of online visitors to WhiteHouse.gov, mobile apps and social media sites. It also clarifies that ...

Hackathon team's GoogolPlex gives Siri extra powers

(Phys.org) —Four freshmen at the University of Pennsylvania have taken Apple's personal assistant Siri to behave as a graduate-level executive assistant which, when asked, is capable of adjusting the temperature ...

Scientists tether lionfish to Cayman reefs

Research done by U.S. scientists in the Cayman Islands suggests that native predators can be trained to gobble up invasive lionfish that colonize regional reefs and voraciously prey on juvenile marine creatures.

Leeches help save woman's ear after pit bull mauling

(HealthDay)—A pit bull attack in July 2013 left a 19-year-old woman with her left ear ripped from her head, leaving an open wound. After preserving the ear, the surgical team started with a reconnection ...