Land subsidence in built-up marshland

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Journal titleCanadian Geotechnical Journal
Pages592595; # of pages: 4
Subjectsubsidence; swamps; settlement; drainage; marecage; tassement; drainage
AbstractSevere 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 in. (30 to 45 cm), affecting streets, sidewalks, driveways, fences, garages, and other structures supported on the ground surface. Houses were 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.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number12175
NPARC number20374655
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Record identifierd51355a9-72f7-44c9-8fef-b5c3611630b2
Record created2012-07-23
Record modified2016-05-09
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