2.2.8.4 Extraordinary loads for car equipment and their fixations2.2.8.4.1 Safety factors for extraordinary loads for car equipment + fixation and related material propertycalculation of extraordinary static loads - requested safety factor Sy against yielding shall be: Sy=1.15 (EN 12663-1)test of extraordinary static loads - requested safety factor Sy against yielding shall be: Sy=1.00 (EN 12663-1)calculation of extraordinary static loads - requested safety factor Su against breakage shall be: Su=1.50 (EN 12663-1)test of extraordinary static loads - requested safety factor Su against breakage shall be: Su=1.30 (EN 12663-1)the minimum admissible strength value of yield strength Sigma y and ultimate strength Sigma u including safety factors shall be taken to evaluate the structural integrity: min(Sigma y/Sy ; Sigma u/Su)calculation/test of extraordinary static loads - required stability safety factor Sb=1.50 against buckling (EN 12663-1)