A new continuous basement wall called SRC basement wall, which has steel encased reinforced concrete has been developed. SRC wall has higher shear strength and ductility than reinforced concrete wall and can serve as a basement wall, a shear wall and an earth retaining wall. This paper discribes strength test results and actual size construction test results conducted on SRC wall. An example of a large scale excavation on soft around enabled by using SRC wall is also described.