Modeling of Time-Dependent Lateral Deformation

On the basis of the predicted temperature gradients (see Chapter 6), the midheight lateral second-order deflection due to thermal expansion, at time step can be approached by [18]  

10% at a fire exposure time of 30 min, for example, would decrease the estimated lateral deflection by 94% approximately. This may explain why the sharp increase in deflections was predicted too early, after 25 min instead of after 49 min when failure actually occurred. 

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