Bridges--South Carolina; Bridges -- Design and Construction; John P. Grace Memorial Bridge (Charleston, S.C.); Timber; Railroads; Ships
Description
Image #531 (4.5" x 2.75'): "7-9-29. Lowering the first main engine from the deck of the Cooper River Span to a lighter below. Weight of engine 31 tons, plus rigging. Two sets wire cable falls of 5 parts each, leading off of the two top drums. Clutch out, frictions in, and lowered by foot brakes. Engine running to allow use of clutch if necessary."; Image #532 (2.75" x 4.5"): "7-9-29. Same as 531. Note horizontal leads of cable falls, thru snatch blocks, instead of straight up off of drums."; Image #533 (2.75" x 4.5"): "7-11-29. Removing rigging, riveting, laying forms, pouring concrete deck, & painting overhead - all at once!"
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
