Analysis Using the Oedometric Modulus
The equation to compute compression of an ith soil layer below foundation having a thickness h arises from the definition of oedometric modulus Eoed:
vertical component of incremental stress in the middle of the ith layer
thickness of the ith layer
oedometric modulus of the ith layer
The oedometric modulus Eoed can be specified for each soil either as constant or with the help of an oedometric curve (σef/ε relation). When using the oedometric curve the program assumes for each layer the value of Eoed corresponding to a given range of original and final stress. If the value of oedometric modulus Eoed is not available, it is possible to input the deformation modulus Edef and the program carries out the respective transformation.