Search Results for: Cathode ray tube
fabricated above ground, the concrete-and-steel modules were floated into place, immersed—with their ends sealed—into a trench spanning the bottom of san francisco bay, between san francisco and oakland. crews made watertight connections between the sections, removed the end caps, and secured the entire tube
. the bart project's most dramatic feat, the transbay tube, a submerged tube across san francisco bay, was completed in . the project also included a hard-rock tunnel through the berkeley hills. growing railway bechtel delivered more than miles ( kilometers) of wide-gauge, double-track, ballast-free,...
https://www.bechtel.com/projects/bay-area-rapid-transit-system-bart/