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It is need to understand concern with settlement of embankment and wall face deformation, strength of geogrid and earth pressure of back the wall, to recognize stability of geogrid reinforced wall with wall block used dry construction method.We were constructed the 8.0m test embankment of geogrid reinforced wall with wall block used dry construction method.The test embankment was set earth pressure gauges of back the wall and on base, strain gauges on the geogrids and settlement plates in back fill. It was observed deformation of the wall face, top of the embankment and settlement plates about one year.Next we were trying FEM analisys. This FEM analisys is used double contact point method, because it is able to think friction coefficient of soil and geogrid and wall block and geogrid,. In result FEM analisys of double contact point method is useful for geogrid reinforced wall with wall block used dry construction method.

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Pile-net method has been used gradually as one of the countermeasures for the high organic soil deposits (peat and muck) in Hokkaido and for the high sensitive soft clay deposits (Ariake clay) in Kyushu, Japan.Pile-net method may be often used in the future, because of it's advantages which are for example, a rapidity of construction, a facility of execution management, an arresting effect on the lateral flow and so on.However, a reasonable design guide to pile-net method has not been established untill now.This paper presents the applications of two finite element analyses previously proposed by the authors to the Ariake clay deposits used pile-net method which are subjected dead loads of testing embankments. And presented herein is a few remarks on the design guide to pile-net method, as the results of some consideration and comparisons between the observed and the calculated settlements.