San Francisco : Architect and Engineer, Inc · leaf 70
Elevations for the bridge are referred tothe U. S. Engineers datum at Slaughterbar on Columbia River. Mean low wateris at plus 2 feet with a main channel depthof 37 feet; the highwater elevation is plus27 feet. The river-bed elevation ranges fromminus 30 to minus 35 feet. Pier foundationsare in a… … COLUMBIA RIVER LUNItN lEW BRBethlehem Steel Com way Officials. The main trusses are de-signed for 60 pounds per square foot ofroadway and for forty pounds per squarefoot of sidewalk. Secondary stresses werefigured throughout. Carbon and siliconsteel members were employed; the siliconbeing used…
Architecture · Building
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