More after the break (sorry for the “Duh†ones, but I didn’t write them). (Graphic by Caltrans)īelow are a few items to think about the next time you’re driving through a workzone taken from a Caltrans fact sheet. For 2006, 614 motorists died in work zone crashes. They may face damage to their vehicles, injuries, and loss of life. Motorists are also at risk for not following work zone safety precautions. Figures for 2007 will be released by the National Work Zone Safety Information Clearinghouse later this year. For 2006—the last year for which data is available—more than 1,000 died in work zones. (Illustration by New York Times)Īpril 7-11 is National Workzone Awareness Week (NWZAW) which draws attention to the hazards roadway construction crews face from motorists not heeding safety warnings. Check out the NY Times article for a great graphic showing the system. All of the existing tiebacks will be left intact. Work for the counterfort wall will be done by hand in order to avoid the existing tieback cables. In the portion of the wall that will be displayed, a counterfort wall will be constructed behind it and new tiebacks will be installed on the front. They are also lining them with additional concrete and reinforcement in front of the walls along with additional tiebacks to stabilize them. The are adding some kind of foundations improvements to stabilize the toe of the walls, the New York Times article calls them caissons, but I don’t know if its a tangent or secant wall or something else. The existing slurry walls are being incorporated into the foundation system of the new facility but not without some improvements. The wall section displayed will be 62-ft by 64-ft. The National September 11 Memorial and Museum at the World Trade Center that is currently under construction will preserve a portion of that wall making it the largest exhibit the museum will offer. The only portions of the World Trade Center towers that survived the attack on 9/11 were the basement slurry walls, part of the original shoring and foundation system.
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