In layerwise summation method

e-lgp is superior to av and e-p method; the reason is that it can be in consideration of the influence of soil stress history. But it is a pity that e-lgp method is rarely used in practical engineering because the related parameters are difficult to be determined. One thought to consider the influences of soil stress history in av and e-p method is given when lack of high pressure consolidation test data; and the corresponding concept of correction coefficient Ms is put forward. Besides

the approximate spans of Ms for different status soils are analyzed. Then

the calculated formula is developed. It is found that the results of av and e-p methods which are rectified with the correction coefficient are more accuracy and more closed to the e-lgp method. This method can be reference for engineers.