The objective of this thesis work is to study the connection between two steel Concrete Structures (SCS) wall modules using embedded connection bars. The SCSs under investigation consist of two steel faceplates held together by tie bars, concrete is cast inside, and stress transmission between the concrete and the steel plates is provided by shear connectors as headed studs. The working principle is similar to that of Reinforced Concrete (RC), where the faceplates provide the tensile strength, replacing the rebars in RC, and the concrete the compressive strength. One of the main differences, which makes the use of SCS advantageous, is that the concrete is confined and thus improves its compressive performance by 4-5 times compared to normal RC.