. Journal of the New England Water Works Association . •;» \*i • » • • • • > « • i • i • • I • ?• i • • i ft. IO4 in. to 5 ft. 113t in thickness from 1 in. at the bottom to ,r>6 in. at the top. The rivetsvary in diameter from 1 in. to | in. Typical details are shown on Fig. the reinforced concrete foundation had been completed thefirst shipment of steel plates was delivered (on .lime 21) and on .Inly 2the erection of the bottom plates began. They were assembled, rivetedtogether, the angles attached to the circumference, and all joints caulked, with the bottom supported on
. Journal of the New England Water Works Association . •;» \*i • » • • • • > « • i • i • • I • ?• i • • i ft. IO4 in. to 5 ft. 113t in thickness from 1 in. at the bottom to ,r>6 in. at the top. The rivetsvary in diameter from 1 in. to | in. Typical details are shown on Fig. the reinforced concrete foundation had been completed thefirst shipment of steel plates was delivered (on .lime 21) and on .Inly 2the erection of the bottom plates began. They were assembled, rivetedtogether, the angles attached to the circumference, and all joints caulked, with the bottom supported on wooden horses three feet above the con-Crete foundation. Four jack screws were then inserted to supporl theinterior plates, and the wooden horses removed. The exterior or periphery. Plate I. of the bottom was supported on blocking in such a way that it could easilylie lowered by removing one block at a time. This use of blocking, insteadof jackscrews, around the edge, may at first thought seem objectionable,as it permitted the plates to sag ;is much as 4 in. between the blocks, as oneafter another of the blocks was removed. Hut as far as could be determinedno damage to either plates or joints resulted. The photograph (Plate I) indicates the general manner of loweringthe blocking, one man operating each of the four jack screws and other menbeing located around the periphery of the bottom to remove the this way the bottom was lowered on to the foundation within a periodof about two hours, in a successful manner and without undue strain onany of the plates, the gang required consisting of one foreman, seven ironworkers and three laborers. The jack screws above referred to, passed through threaded flanges ornuts, riveted to the upper side of the bottom plat
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Keywords: ., bookcentury1900, bookdecade1920, bookidjournalofnew, bookyear1922
