Chicago : Engineering and Contracting Pub. Co. · leaf 530
ust been completed across thechannel and the water within the lagoon thusformed will be pumped out and the presentbarrier and the area between it and the newone will be excavated to 45 ft. below meansea level with a bottom width of 500 ft.Most of the excavation will be made hydrau-lickally with the… … Fig. 1—Driving Light Corrugated SteelSheeting with 650-lb. Steam Hammer,Steadied by Hand. tween them and the cofferdam are completed,water will be let into the space south of thelocks and the cofferdam will be removed bydredges. This is the last barrier betweenthe locks and the Pacific. Status of…
Buildings
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