Glacial Till
Glacial Till
(OP)
Anybody with a general description of Glacial Till? General classification parameters, constituents, testing, properties...
Thanks.
Thanks.
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RE: Glacial Till
However, go to this link for more.
http://en.wikipedia.org/wiki/Till
RE: Glacial Till
The source of the question is we are driving steel sheet piles for a 1400' long dock. There's insufficient boreholes but what there are of them indicated the toe of the SSP would be around 3' into glacial till before bedrock. There's about 12' of soft organic sandy silt then 20' of silty clay then about 3' of glacial till then bedrock. Driving the piles is like a hot knife in butter through the silt and clay and it's turning out the till? as well. I would have thought the till would have slowed the vibro down but it barely notices the till. In the past when I've excavated in till it's dense and hard. In any case the word till was used the geotechnical report uses the following; clayey silt, few pieces of gravel, stiff qu = 2.5k/sq.ft. and/or sandy silt few pieces of gravel firm (SPT 8 blows for 0.5 feet).
Thoughts? Is this Till? Sure doesn't seem like it when driving through it?
RE: Glacial Till
RE: Glacial Till
Right good to keep in mind a material name not actually it's properties such as density.
RE: Glacial Till