San Francisco : Architect and Engineer, Inc · leaf 498
It wasdecided to make the posts continuous onlyabove the third tier in order that the lowerwaling sets and struts might be jacked downif necessary to take care of any great dififer-ences that might be found in elevation ofrock at corners of cofferdam. It developedlater, however, that the jacking… … ^3f TYPICAL CROSS SECTIONS, MAIN PIERS,SUISUN BAY BRIDGE Mud was then jetted out from under thebottom wales, using, at first, a lYz inch pipetapered to a 1^^ inch nozzle, average pres-sure at pump being 125 pounds per squareinch. A diver was lowered to inspect thework but reported that this jet was…
Architecture · Building
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