Mark Ketchum's Online Scrapbook
Home Page for Mark Ketchum of Berkeley California. Focus on bridge structures, thin shell concrete roofs, motorcycles, family, and friends.
Ketchum, Mark, Milo, Engineering, Structural, Bridge, Civil, Design, Building, Structures, Long, Span, Suspension, Cable, Stayed, Segmental, Girder, Box, Arch, Concrete, Precast, Cast-in-Place, Steel, Plate, Box, Composite, Orthotropic, Dome, Thin, Shell,
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