According to SNiP II-22-81 “ Stone and stone-stone structures ”, paragraph 6. 31: “ Flexible connections should be designed from corrosion-resistant steels or steels protected from corrosion, as well as from polymeric materials.”
This SNiP indicates that the use of non-corrosive fittings, ferrous metal fittings, and wire as flexible connections is dangerous, since their corrosion, leading to the collapse of the facing walls, affects the safety of the building. This condition of the structure is emergency and living in this room is life-threatening due to the real possibility of collapse. Repair of such an emergency building requires significant time and material costs, which is disadvantageous from an economic point of view.