BRIDGE COLLAPSE

THE COLLAPSE OF AN OVERBRIDGE CARRYING A SIGNAL BOX OCCURRED BECAUSE OF UNCHECKED CORROSION OF PAINTED STEEL, DUE TO LAX EXAMINATION, ERRORS OF JUDGMENT AND DEFECTIVE ORGANIZATION IN HANDLING EXAMINATION REPORTS. A FAILURE TOOK PLACE AT THE LOWER END OF A TWO-PLATE DIAGONAL MEMBER OF A PAINTED STEEL LATTICE MAIN GIRDER. AN EXAMINATION OF THIS DIAGONAL MEMBER INDICATED THAT THERE WAS PROBABLY AN ALMOST UNBROKEN SKIN OF PAINT ON THE OUTSIDE SURFACE OF THE OUTER PLATE, ALTHOUGH THERE WAS EVIDENCE OF CORROSION HOLES RIGHT THROUGH THIS PLATE AT THE POINT OF FRACTURE. HOT DIP GALVANIZING IS RECOMMENDED FOR CORROSION PROTECTION AS WELL AS EFFECTIVE INSPECTION PROCEDURES.

• Supplemental Notes:
  • Vol 13, No 1, PP 7-8, 1 PHOT
• Corporate Authors:

  Corrosion Prevention & Control /UK

  ,    
• Publication Date: 1966-1

Subject/Index Terms

• TRT Terms: Collapse; Corrosion; Corrosion protection; Failure; Galvanizing; Inspection; Lattices; Painting; Steel plates; Steel structures; Structural mechanics
• Uncontrolled Terms: Structural failures
• Old TRIS Terms: Hot dip galvanizing; Steel structure painting
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216285
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 18 1994 12:00AM