Steel system structures are now suitable for environmentally friendly green building construction technology with economical, aesthetic and original designs as well as the lightest self-weight of the building, ductile behavior capacity, ease of material and construction control, renewable and improvable construction feature against the mass factor against earthquake effects. The most suitable building material for the 100% building system is the STEEL CARRIER system, and it has started to be accepted in our country. The installation of steel construction structures is fast, can be disassembled and reassembled many times, it is a technological material and has a high capacity to produce earthquake-resistant structures, by financial institutions that take into account the robustness of the investors' buildings, by providing credit convenience to investors who make steel system structures, support is in question.