Reconstruction of the Grenfell tower fire—Part 6—Numerical simulation of the Grenfell tower disaster: Contribution to the understanding of the tenability conditions inside the common areas of the tower

摘要

Summary The recent dramatic events at Grenfell Tower in London involving a combustible fa?ade system have raised concerns regarding the fire risk that these systems pose. The spread of fire over the fa?ade of the Tower was previously modelled numerically and the results of this modelling were validated by comparison with observations of the real fire. This model was used to determine the fire behaviour of the fa?ade and the propagation of the fa?ade fire into the apartments through windows. The modelling used an impact model according to ISO 13571 and included fire loads from the fa?ade and, when relevant, from apartment contents. Tenability levels inside the apartments were quantified by an analysis of the toxic and thermal conditions due to the combustion of the fa?ade materials and the apartment contents. In the present paper, the conditions inside the lobbies and stairs of the Tower are investigated, building on the previous analysis of the apartments. This allows an understanding of the evolution of toxic and thermal conditions whilst the fire spread, and their impact on egress during the fire event.