ABSTRACT

Data on the behaviour of materials at elevated temperatures is needed to allow both the Fourier equation of heat diffusion and the structural simulation to be solved. Data are given on timber, masonry and aluminium, although in the case of timber there is less need for such data as design methods do not generally need temperature-dependant properties. In the case of masonry, there are no detailed design methods in current use which involve the need for such data. Data for calculating the thermal response are normally required only for concrete, steel and aluminium. Although calculations for the thermal response can be carried out for masonry, it is not generally necessary. For timber, strength calculations are carried out on the core which is either taken to be temperature unaffected, or an allowance is made for the temperature effect by a factor applied to the allowable stresses based on member thickness.