TY JOUR TI APPROACH TO AN ESTIMATION DEFORMABILITY OF BENDING CONCRETE ELEMENTS BASED ON ITERATIVE CALCULATION METHOD KW flexural reinforced concrete element KW stiffener KW flection of the element KW the iterative calculation method. JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Kryuchkov , A.. AU Zhdanov , A.. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov