Infrastructure

Oil rig blast caused by gas hydrates, Berkeley professor believes

05/12/10 Los Angeles Times — Robert Bea, a UC Berkeley engineering professor who is conducting an informal assessment of the Deepwater Horizon wellhead blast, said Tuesday that BP documents leaked to him indicate that contaminants in cement encasing the well were the initial cause of the explosion that led to the ongoing oil spill in the Gulf of Mexico.

New ways to drill, old methods for cleanup

05/10/10 The New York Times — As hopes dim for containing the oil spill in the Gulf of Mexico anytime soon, more people are asking why the industry was not better prepared to react. "They [oil industry engineers] have horribly underestimated the likelihood of a spill and therefore horribly underestimated the consequences of something going wrong," said Robert G. Bea, a professor at UC Berkeley who studies offshore drilling. "So what we have now is some equivalent of a fire drill with paper towels and buckets for cleanup."

Engineering approaches to oil spill: Berkeley Engineering’s Robert Bea on Science Friday

05/07/10 Science Friday — The oil continues to gush from the sunken Deepwater Horizon oil platform in the Gulf -- and the official solution for stopping the flow, which involves finding the borehole and drilling into it at an angle -- could take weeks. But are there other options? Some people, such as UC Berkeley professor of civil and environmental engineering Robert Bea, are looking outside the box for engineering solutions

We are using really old technology to clean up the oil spill

05/05/10 True/Slant — The effectiveness of the cleanup of the massive oil slick from the explosion of BP's oil rig Deep Horizon in the Gulf Mexico will be both a matter of speed and technology. And on both fronts, we may lose. Nearly impossible to clean up will be whatever is below the surface. UC Berkeley engineering professor Robert Bea, who serves on a National Academy of Engineering panel on oil pipeline safety, says, "There's an equal amount that could be subsurface too." And that oil below the surface "is damn near impossible to track."

On a Yosemite cliff, listening

05/05/10 — About every 10 days, falling rock shatters the tranquility of Yosemite National Park. "It's a dynamic place," says park geologist Greg Stock. "Rockfall is the most powerful geologic force acting on the park today. The goal is to eventually predict rockfalls and better constrain the hazard." Enter Valerie Zimmer, a Berkeley geoengineering Ph.D. student who launched her doctoral work studying rockfall in mines using tiny acoustic sensors to document the rock mechanics and geophysical forces underground.

In search of an earthquake-proof building

03/02/10 CNN.com — Earthquakes alone don't kill people; collapsed buildings do. But can people engineer buildings that wouldn't crumble when subjected to the rumblings of the Earth? High costs keep countries such as Haiti from adopting the latest building techniques and technologies, said Nicholas Sitar, professor of civil and environmental engineering at UC Berkeley. He said making buildings more basic might actually make them stronger and would cost less than high-tech upgrades

Building codes, earthquake’s ‘shake’ explain why Chile fared better than Haiti: experts

02/27/10 Gwinnett Daily Online — Chile's preparedness and the extent of Saturday's earthquake explain why the loss of life and property was far less than the death and destruction Haiti's less powerful quake caused last month, experts say. "The Haiti earthquake was shallower, the high population area was closer to the fault that ruptured and, very importantly, the buildings and infrastructure in Chile are designed considering earthquake effects - whereas Haiti had no building codes,'' said Jonathan Bray, an earthquake engineering professor with the University of California, Berkeley.

Engineer: Construction methods at heart of Haiti quake tragedy

01/26/10 Oakland Tribune — Haiti's construction industry is to blame for hundreds of thousands of deaths in a tragedy that will repeat itself unless there are changes to building practices there, a Berkeley engineer said Tuesday. In one of the first technical reports on this month's earthquake, Eduardo Fierro, president of BFP Engineers, presented his preliminary findings at UC Berkeley following a week of reconnaissance in Haiti that started just two days after the magnitude 7.0 quake struck Jan. 12.

Haiti quake raises flags on U.S. hot spots

01/23/10 CBS News — Researchers tell us America gets a "B+" for knowing what causes earthquakes, but a "C+" when it comes to securing infrastructure. Short-term predictions are simply not possible yet, and earthquakes can happen in places you wouldn't expect. Khalid Mosalam, an engineering professor at UC Berkeley, works in one of 15 university labs across the U.S. testing port stability, how much stress steel beams can handle and what happens inside a building during an earthquake. "Any heavy content of the building if not secured to the walls of the building, they would tend to be tossed around," Mosalam said, adding that such objects would also cause injuries or worse.

A Fix for Memorial Stadium

05/02/09 — If the Hayward Fault ruptures during a Cal home game, Memorial Stadium fans would be in for a wild ride. But they should be safe-even if they're seated in the most vulnerable end-zone sections. That's the outcome that David Friedman (B.S'75 CE) envisions for the massive retrofit of UC Berkeley's landmark but seismically poor football venue. Friedman, senior principal at San Francisco–based Forell/Elsesser Engineers, is the lead engineer for the stadium's renovation. Built in 1923, Memorial Stadium straddles the Hayward Fault and is in need of seismic upgrades.