TY JOUR TI DEFECTS AND DAMAGES OF METAL COLUMNS OF INDUSTRIAL BUILDINGS KW damage to metal columns KW surface corrosion KW damage to base elements KW damage to the con-necting grid KW damage to the connecting grid elements KW damage to the walls of the column branches KW damage to the column branches KW damage to the column branches JO Construction and Architecture AU Evtushenko, S.I. AU Krakhmalnyy, T.A. PY 2021 IS 9 PB Publishing Center RIOR