For the bearing capacity of layered foundations calculated by Meyerhof and Hanna formula
its calculation procedure is refined; and the bearing capacity common model is derivd. The bearing capacity of layered foundation calculated by Meyerhof and Hanna formula is validated by using using the results of in-situ load examination so as to modify the formula. (1) The key step of the formula is to determine the failure plane limit depth
which significantly influenced the result
(2) By the large-scale stress plane in-situ examination
as the layers of soil exceed double
the ultimate bearing capacity of layered foundation calculated by Meyerhof and Hanna formula compared well.