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Characteristic Parameters of Tills in Relation to Earthworks

Lookup NU author(s): Professor Barry Clarke, Siamak Hashemi


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Evidence from fresh exposures in subglacial tills shows that they contain lenses and layers of sands and gravels and softer clays. This suggests that many subglacial tills could be described as deformation tills and excavation failures should be expected. Foundations in glacial tills are often over designed. Extensive testing programmes have shown that the mobilised strength and stiffness of these tills are underestimated. Further, the design methods and chosen parameters may not be appropriate for the subglacial tills. These issues need to be addressed if economic, safe solutions are to be developed for earthworks in glacial tills.

Publication metadata

Author(s): Hashemi S; Clarke B; Hughes D

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Conference on Earthworks

Year of Conference: 2002