TY JOUR TI CALCULATION OF GEOMETRICAL PARAMETERS OF THE FIREPROOF COVERING BY MEANS OF THE PROGRAM COMPLEX «ELCUT 6.3» KW ELCUT 6.3 KW fire resistance limit KW fireproof covering KW ELCUT 6.3 JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Romanov, N.N. AU Konstantinova, A.S. PY 2018 IS 2018 PB Saint-Petersburg University of State Fire Service of Emercom of Russia