The length of the pile (elastic supporting depth [Begin – End] ) is starting on ground level and ending on the effective elastic supported length of the pile:
In case penetration test diagrams are used (qc;gem or NVN 6724), the elastic support value and his element length is calculated common the parts of soil in the soil diagram and limited by the Max. layer thickness value:
where: ∆L ≤ Max_layer_thickness
In case a user defined elastic foundation system is chosen, uniform distribution of elastic supports over the effective elastic supported length of the pile is used. Such uniform part of the effective elastic supported length of the pile has a length of ∆L ≌ Length_of_the_pile / Element length ≤ Layer_thickness.