TELFORDS HISTORIC LINK RETAINED

IN FOUR MONTHS THOMAS TELFORDS FAMOUS CAST-IRON BRIDGE AT CRAIGELLACHIE HAS BEEN REBUILT AFTER 150 YEARS WITHOUT SERIOUS REPAIR OR MAJOR ALTERATION. THE BRIDGE HAS BEEN STANDING SINCE THE BATTLE OF WATERLOO BUT THE INCREASING TRAFFIC BURDEN NECESSITATED A THOROUGH STRESS SURVEY. IT WAS DECIDED TO REBUILD THE BRIDGE ON THE ORIGINAL ARCH RIBS IN MODERN MATERIALS BUT IN THE OLD STYLE. STEEL HAS REPLACED A CAST IRON THROUGHOUT THE SUPERSTRUCTURE. AND WHERE OLD MEETS NEW IN THE VITAL JOINTS ALONG THE ARCH RIBS, WHERE TELFORDS MEN USED A PASTE OF GRAPHITE AND IRON FILINGS, THEIR SUCCESSORS HAVE USED DEVCON---A COMPOUND CONTAINING 80 PER CENT STEEL AND 20 PER CENT MODIFIED EPOXY RESIN. THE NEW BRIDGE IS FAITHFUL TO THE OLD ALMOST DOWN TO THE LAST NUT AND BOLT --- IN THIS CASE SQUARE NUTS WERE WELDED TO THE OUTER FRAME TO RETAIN THE ORIGINAL FORM. /AUTHOR/

  • Availability:
  • Supplemental Notes:
    • Vol 33, No 1617, PP 7
  • Publication Date: 1965-8-18

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  • Accession Number: 00214705
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 18 1994 12:00AM