Fire safety in perforated wooden slab, a numerical approach

• Autor(es): Fonseca, E.M.M. ; Couto, D. ; Piloto, P.A.G.
• Data: 2013
• Identificador Persistente: http://hdl.handle.net/10198/10457
• Origem: Biblioteca Digital do IPB
• Assunto(s): Perforated wooden slab; Fire; Numerical study
• Tipo de Documento: Documento de conferência
• Idioma: Inglês

Descrição

The main goal of this work is to present a numerical model to assess the fire safety of wooden slabs with rectangular perforations at the ceiling. These typical constructions have good sound absorption, heat insulation and relevant architectonic characteristics. They are used in many civil applications: concert and conference halls, classrooms, nurseries, airports, hotels, shopping, universities, and many other public buildings. These panels are normally installed at lower level in building constructions due essential an easy maintenance. Depending of the installation requirement, the perforated wooden slabs could have an insulation material inside the cavities. In this work the proposed numerical model could be used for different design constructive solutions. For guarantee the fire rating in a typical used perforated wooden slab, a transient thermal analysis with nonlinear material behaviour will be solved using ANSYS program. This study allows verifying the evolution of the temperature and the char-layer throughout a wooden slab with different rectangular perforations and considering the insulation effect inside the cavities. The developed numerical model allows future studies and simultaneously characterizes the effect of rectangular perforations in wooden slabs to minimize the fire risk. The numerical model can easily be adjusted for other constructive solutions, to facilitate fire safety validation, in buildings with several wooden slabs assemblies used in floors or in ceilings applications.