TY CONF TI STRUCTURAL SOLUTIONS OF STAIRCASES OF AN ABOVEGROUND PEDESTRIAN CROSSING, TAKEN INTO ACCOUNT WHEN DETERMINING THE DEGREE OF FIRE RESISTANCE KW urban settlements KW linear object KW object of protection KW aboveground pedestrian crossing KW structural solutions KW staircases KW fire resistance indicators JO TECHNOSPHERE SAFETY: MODERN SCIENTIFIC TRENDS, TECHNICAL AND ORGANIZATIONAL MEANS AND METHODS OF PROVISION, SPECIAL EDUCATION AU Sazonova, S.A. AU Kochegarov, A.V. AU Kazbanova, I.M. AU Stepanenko, M.D. PY 2024 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov