SUSPENSION CABLES SPUN ON QUEBEC'S FRONTENAC BRIDGE

CABLE SPINNING OPERATIONS HAVE BEGUN ON CANADA'S LONGEST SUSPENSION BRIDGE, THE $43 MILLION, 3,414-FOOT FRONTENAC BRIDGE NEAR QUEBEC CITY. TWENTY-ONE THOUSAND SIX HUNDRED MILES OF HIGH STRENGTH WIRE WILL BE USED TO BUILD UP THE PARALLEL WIRE CABLES, A DESIGN FEATURE BETTER SUITED FOR LONGER SPANS, GIVING HIGHER ALLOWABLE STRESS. THE WIRE LAYING PROCEDURE EMPLOYS A WHEEL APPARATUS, TWO BIGHTS OF WIRE ARE HOOKED AROUND THE WHEEL, TOWED ACROSS THE RIVER, AND LAID IN THE CORRECT PROFILE. EACH CABLE COMPRISES 12,580 WIRES. A NIGHTLY CHECK IS MADE OF THE CABLES PROFILE AGAINST AN ACCURATELY SURVEYED GUIDE CABLE. WHEN THE CABLE HAS BEEN COMPLETED, IT WILL BE COMPRESSED AND BOUND, THUS INCREASING ITS STRENGTH. THE VERTICAL SUSPENDER CABLES WILL THEN BE INSTALLED, FOLLOWED BY THE BRIDGE DECK, CONSISTING OF 27 80-FOOT PREASSEMBLED SECTIONS WHICH WILL BE LIFTED UP INTO PLACE FROM BARGES ON THE RIVER. THE BRIDGE WILL BE ABLE TO WITHSTAND WINDS UP TO 124 MILES PER HR., AND WILL BE SUBJECTED TO A RANGE OF MOVEMENT AT MID-SPAN OF UP TO 9 FEET DUE TO SEASONAL EXTREMES OF TEMPERATURE. /CGRA/

  • Availability:
  • Supplemental Notes:
    • Vol 13, No 21, PP 6-8, 12, 1 FIG, 9 PHOT
  • Publication Date: 1969-5

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Filing Info

  • Accession Number: 00208208
  • Record Type: Publication
  • Source Agency: CANADIAN GOOD ROADS ASSOCIATION
  • Files: TRIS
  • Created Date: Apr 16 1970 12:00AM