Bridges--South Carolina; Bridges -- Design and Construction; John P. Grace Memorial Bridge (Charleston, S.C.); Timber; Railroads; Ships
Description
Image #399 (2.75" x 4.5") and Image #400 (2.75" x 4.5"): "Member U12 L12 East Cantilever Arm. 96'-0" c. to c. panel points. As erected this member appeared to be 3 1/2" short, due to fabrication of members, some shorter and some longer than their final geometric lengths, and due to the sub-diagonal M11 L12 (lower right). Pulled together by a 7-part auxiliary falls. Engine kept in high gear to reduce power - max. lead line pull = about 9000 [pounds], approx., giving possible capacity of 130 tons. Required one day to connect each member - two days total.
Digital image copyright 2009, Charleston County Public Library. All rights reserved. For more information contact the Charleston Archive, Charleston County Public Library, 68 Calhoun Street, Charleston, SC 29401
