Client: Kiewit/Flatiron/Manson, Joint Venture
Contract Value: $1.04 Billion
Description: Formwork Geometrics for Segmental Concrete Bridge Construction

One of the more challenging aspects of the San Francisco/Oakland Bay Bridge was the development of the formwork geometry for the precast segments. Of particular interest was the geometry of long-line soffit forms that would be used to cast the curved sections of the structure. While involved in a peer review of erection calculations for the bridge, Civil Geometrics was tasked with the development of this formwork geometry for the project’s casting yard in Stockton, CA.

This process involved the development of the bridge’s cambered geometry in its global coordinate system, and the transformation of this geometry to its appropriate position in the casting yard. With our extensive segmental experience, Civil Geometrics was able to apply vector based tools and matrix operations to provide the layout and grading for the casting process.