Percorrer por autor "Ribeiro, Otavio"
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- Fire resistance of protected composite slab with a stiffened lower flange steel deckPublication . Piloto, Paulo A.G.; Ribeiro, Otavio; Gidrão, GustavoThis study developed a simplified method to evaluate the fire resistance of composite slabs with steel decking protected by a novel steel shield. A numerically validated model, incorporating experimental data, demonstrated that the steel shield increases insulation failure time by approximately 25% (criterion I) and significantly reduces temperatures in critical zones. New empirical coefficients (bᵢ, cᵢ) were calibrated for use with the EN 1994-1- 2 simplified method, enabling accurate prediction of the thermal and structural behaviour of this system. Mineral wool insulation provided even superior performance. The research offers a practical design tool for engineering more efficient and fire-safe composite slabs.