LAND SUBSIDENCE IN BUILT-UP MARSHLAND

SEVERE LAND SUBSIDENCE HAS BEEN OBSERVED IN A RESIDENTIAL AREA IN OTTAWA BUILT SOME 15 TO 20 YEARS AGO ON MARSHLAND. SUBSIDENCE VARIES FROM 12 TO 18 IM. (30 TO 45 CM), AFFECTING STREETS, SIDEWALKS, DRIVEWAYS, FENCES, GARAGES, AND OTHER STRUCTURES SUPPORTED ON THE GROUND SURFACE. HOUSES ARE NOT AFFECTED BECAUSE THEY WERE FOUNDED ON SHALLOW BEDROCK. ACCELERATED DECOMPOSITION OF THE PEAT AND THE UNDERLYING MARL IS BELIEVED TO HAVE STARTED WHEN THE AREA WAS DRAINED FOR DEVELOPMENT, AND THIS IS BELIEVED TO BE RESPONSIBLE FOR THE SEVERE SUBSIDENCE OBSERVED. /RATAOC/

  • Supplemental Notes:
    • Vol 8, No 4, PP 592-6, 6 FIG, 1 TAB.
  • Authors:
    • Bozozuk, M
    • Penner, E
  • Publication Date: 1971-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00233890
  • Record Type: Publication
  • Source Agency: Roads & Transportation Assoc /Canada
  • Files: TRIS
  • Created Date: Jan 17 1973 12:00AM