Bridges--South Carolina; Bridges -- Design and Construction; John P. Grace Memorial Bridge (Charleston, S.C.); Timber; Railroads; Ships
Description
Image #451 (4.5" x 2.75"): "6-18-29. Bow in main compression diagonal L14 U15, south truss, east cantilever arm. Measured deflection 1 9/16". Note string at lower left. See 495 and 496 for method of straightening."; Image #553 (4.5" x 2.75"): "7-27-29. L14 U15 after being straightened while under load in the bridge. Note straight string along lower left flange. Max variation is now 7/16" at lower end only. Remainder straight."; Image #452 (4.5" x 2.75"): "6-19-29. West cantilever (far side) to L21 and east arm (top) to L17 with hangers at U18 L18."
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
