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University of Auckland ALR5 Lecture Theatre (421W-301) Architecture and Planning building, 26 Symonds Street, Auckland

March 2020

The shrink swell test of determining Expansive Site Soil Classes is Fatally Flawed

Presented by Nick Rogers, Tonkin & Taylor The shrink swell test, which combines both the shrink strain and the swell strain, was developed in Australia in the 1980s. This test now underpins a codified approach to the foundation design of lightweight buildings on expansive (reactive) soils in Australia and New Zealand. This presentation sets out the results of a critical examination of datasets of shrink swell tests undertaken in Auckland, New Zealand and Victoria, Australia and concludes that in these…

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