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When a structure
applies load on a footing, total and effective stress increases in
soil mass. NovoLiq can update σv and σv based on stress increase
(DP)
due to stress below the footing. This overburden stress update will
not be applied for calculating N1(60) which is dependent
on overburden stress, too. All other parameters which are function
of overburden stress will be raised by DP; for example Cyclic Stress Ratio will be
calculated as below:
Where:
σv : total
overburden pressure at the depth considered
σv’ : effective
overburden pressure at the same depth
 Stress increase is
calculated based on 2:1 slope method: DP=B.L.P / {(B+Z).(L+Z)}
Where:
B: Foundation
width
L: Foundation
Length
P: Stress below
the foundation (load / length2)
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