DIAMOND-SAW SURGERY FOR UNDERMINED OVERBRIDGE

The author describes the use of hydraulic-powered, wall mounted diamond saws to cut through an M1 overbridge in Derbyshire, threatened by subsidence from mineworkings below. A detailed description is given of the operation which involves increasing the clearance between the bridge's abutments and columns at either end from 75 mm to 230 mm by taking a vertical slice out of the parapets, duct covers, deckslab and abutments. The advantages of the method chosen are outlined and include the resulting clean edge and relatively low cost. /TRRL/

Media Info

  • Features: Photos;
  • Pagination: p. 18
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00165654
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Mar 14 1978 12:00AM