following sheet pile 29 39 is guided by prior sheet pile 29 39 in fig1 when sheet piles 29 39 are sunk in order aspect of following sheet pile 29 39 is made opposite to that of prior one the aspect of sheet piles can be changed at optional positions fig3 is a partly sectional perspective view of a wall constituted by only sheet piles as for this type of wall earth or concrete is placed at the bottoms of holes 30 to a certain height in the state shown in fig2 c and thereafter earth inside the curves of the sheet piles 29 i e on the side of the holes 30 is removed to a certain depth and earth on the opposite side is supported fig5 is a sectional elevation view of a completed wall constructed as abovementioned as also shown in fig3 it is possible that a horizontal connecting member 31 of column or plate shape is pushed or fastened on the wall and further tie rods are provided as required fig4 is a partly sectional perspective view of a wall constructed according to other embodiment of the present invention in the present embodiment reinforcements or wire cages.