Public works . igners and constructors of marine andharbor improvements. This method was approvedby Frank M. Williams, state engineer, whose co-operation made the execution of the work possible. LARGE SUBMERGED ADJUSTABLE FORMS A very important element of the equipment in-stalled for the execution of the work was the twosteel forms of unusually large dimensions, whichwere built by the Blaw-Knox Co. according to thecontractors general design, the details and workingparts of the form being designed by the builders maccordance with their patents. The forms for the front and rear face of the wallw
Public works . igners and constructors of marine andharbor improvements. This method was approvedby Frank M. Williams, state engineer, whose co-operation made the execution of the work possible. LARGE SUBMERGED ADJUSTABLE FORMS A very important element of the equipment in-stalled for the execution of the work was the twosteel forms of unusually large dimensions, whichwere built by the Blaw-Knox Co. according to thecontractors general design, the details and workingparts of the form being designed by the builders maccordance with their patents. The forms for the front and rear face of the wallwere 25 feet long and consisted substantially of flatsteel la-gging plates, countersunk riveted to the out-side ribs of structural steel in transverse verticalplanes 5 feet apart. The lower edges of the steelplates terminate about 5 feet above the bottom ofthe form and beyond this point the steel plates arereplaced by wooden planks to provide for easy andaccurate fitting over irregularities of the rock \ ^^(*^««;S>»H^H ? .-^ - 1111 iiiiilli EXTERIOR FACE OF SUBMERGED FORM SHOWINGWOODEN LAGGING AT BOTTOM. SIDE PIECES OF FORM SUSPENDED FROM TOWER,READY FOR SUBMERSION. The two remaining sides or ends of the form arecomposed of vertical transverse detachable bulk-heads that have horizontal wooden lagging nailedto vertical posts that engage top, bottom and inter-mediate outside riveted stiffening trusses in horizon-, tal planes. The ends of the stiffening trusses projectbeyond the faces of the concrete walls and engagelugs riveted to the side forms, permitting them to besecurely locked together to enclose wall sections fromthe rock bottom to the surface of the water. The forms, weighing about 55 tons each, are sus-pended by turnbuckle rods from the top of a steelgantry tower with four legs resting on the rockbottom. The tower, which is made chiefly of anglesand connection plates, has two transverse bents con-nected by longitudinal bracing. Each bent has twolegs or si
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmunicip, bookyear1896
