Structural Engineering Slide Library

Prestressed Concrete Beams for BART, California (1968)

	Image-GoddenG28 Prestressed beams for Bay Area Rapid Transit System (BART), California. This view shows the formwork for the hollow box beams. It is made of steel plate. (San Francisco, Bay Area)
	Image-GoddenG29 Prestressed beams for Bay Area Rapid Transit System (BART), California. The rebar reinforcement for the webs and lower flange has been placed, as well as the end shear reinforcement. The top flange reinforcement has yet to be positioned, though some of the top transverse bars can be seen at the far end. (San Francisco, Bay Area)
	Image-GoddenG30 Prestressed beams for Bay Area Rapid Transit System, (BART), California. The finished beam after prestressing. Note the lifting lugs and the protruding reinforcement for the rail bed. The four cable anchorages can be seen on the near end of the beam. These beams were manufactured in large numbers in a casting yard with overhead crane constructed for the purpose. (San Francisco, Bay Area)

Set G: Structures Under Construction