Piloto, Paulo A.G.Balsa, CarlosLídia R. S. Lima2026-03-262026-03-262023Pilioto, P. A. G.; Balsa, C.; Lima, L.(2023). New Harmonised Proposal for the Fire Resistance of Composite Slabs with Steel Deck . In: Proceedings ICEM20 - 20th International Conference on Experimental Mechanics. INEGI: Porto. ISBN 9789895475674. p.1131-1146978-989-54756-7-4http://hdl.handle.net/10198/36305The ability to sustain the load (R) of a composite slab during a fire, requires the calculation of the temperature for each load bearing component. The load bearing components that are affected by the temperature are: the bottom flange of the steel deck, the web, the upper flange and the reinforcing bars. The concrete part is not affected by the temperature. The current version of the EN 1994-1-2 presents one simple calculation method that is based on empirical coefficients to determine the average temperature of each component. The effect of the load needs to be compared with the plastic moment of the composite slab for specific fire ratings 60, 90 and 120 min) for the case of the normal weight concrete. Based on a numerical parametric analysis, a new harmonised proposal is presented, including all the main parameters affecting the fire resistance. This new proposal is even safer than the current version.engComposite slabsnumerical modellingfire resistanceMATLABconference paper