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July 2012
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Friday, July 27, 2012

July Lunch Program Bay Bridge Replacement Project

12:30 PM - 02:00 PM Eastern Standard Time



Speaker: Hayat Tazir, P.E. - Senior Bridge Engineer with T.Y. Lin International.

To attend, register here by Tuesday, July 24

Contact Lauren Proctor, lauren.proctor@ch2m.com, if you encounter any problems with registering.

 

 

T.Y. Lin International, in a joint venture with Moffatt & Nichol, is currently providing complete design services for the replacement of the eastern span of the Bay Bridge between San Francisco and Oakland. From conceptual and final design through construction support services, T.Y. Lin International has been involved in all phases of the project, which includes an asymmetrical Self-Anchored Suspension (SAS) bridge, Skyway structure, approach structure on the Yerba Buena Island side, and approach structure on the Oakland side-a total project length of 6.39km.

Please join us on July 27 to hear the latest news on the construction of this iconic project. Hayat Tazir, with T.Y. Lin International will be walking us through design and construction of the world's longest Self-Anchored Suspension Span Bridge, including how the complex feat of installing 137 strands of steel nearly a mile in length was accomplished in just 15 weeks.

Self-Anchored Suspension Span

The innovative design calls for two main sections; a 162-meter-high single, central steel tower asymmetric suspension bridge with a main span of 385 meters and a back span of 180 meters, and a 2.57km twin streamline concrete segmental Skyway. The unique single tower is comprised of four steel shafts connected by "shear link" beams, designed to protect the load-bearing shafts in the likely event of another Bay Area earthquake. A single cable gracefully drapes from the tower's top and loops back below the west end, with slender suspender cables that attach the main cable to girders beneath the road deck. The bridge has two separate decks that are 25m wide, which carry five lanes of highway traffic. In addition, the EB structure has 5m cantilever supports and a pedestrian and bicycle path. The SAS is scheduled for completion in 2013.

About our Speaker:

Hayat Tazir, P.E. is a Senior Bridge Engineer with T.Y. Lin International. Hayat Tazir earned her M.S. from Massachusetts Institute of Technology in 1988. A structural engineer with more than 15 years of design experience in the specialized field of bridge engineering, Ms. Tazir has held significant roles on projects such as the Center Artery/Tunnel in Boston, the historic Verrazano-Narrows Bridge and the record-setting San Francisco-Oakland Bay Bridge. Her work encompasses structural analysis and design of concrete and steel structures. In the past several years, during construction of the San Francisco-Oakland Bay Bridge, Ms. Tazir responsibilities have grown to include Team Lead for shop drawing review and On-Site Representative working with steel fabricators for the SFOBB box girders.

TIME:
11:30 a.m. - 12:00 p.m. Registration/Mingling/Lunch Served
12:00 p.m. - 12:45 p.m. Speaker Presentation
12:45 p.m. - 1:00 p.m. Q & A

LOCATION: Sacramento Area Council of Governments (SACOG) Board Room
1415 L Street, Suite 300
Sacramento, CA 95814

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