initially a relatively slow rise before 100 C. This temperature
behavior may be the result of thermal-induced migration of the
moisture toward the center of the column, where as shown in
the figures, the influence of the migration is most pronounced Lie
and Irwin [18]. Fig. 12 shows the calculated and measured axial
deformations of the columns during exposure to fire. The numerical
analysis predicts reasonably well, the trend in the progression
of the deformation with time. The fire endurance decreased with
load level, Fig. 13, until the column could no longer support the
applied load, Table 5. It is easy to determine the fire resistance of
column for given applied load level, and vice versa.