Janbu, Bjerrum and Kjaernsli (1956) proposed an equation to calculate the average settlement of a flexible footing embedded on saturated clay, under undrained condition.
The value of soil
displacement is dependent of the embedment depth and the thickness of the soil
layer.
Charts providing
the key parameters to use the equation has been improved by Christian and
Carrier in year 1978.
The soil is
assumed as perfectly incompressible material, where the Poisson ratio is taken
as 0.5.
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