In the case of load-bearing divisions of aluminium alloy,
the average temperature of the structural core obtained by the thermocouples
described in 7.6 should not
rise more than 200°C above its initial temperature at any time
during the minimum test duration relevant to the classification (see 8.5). Where the structural core is
of a material other than steel or aluminium alloy the Administration
should decide the rise in temperature which should not be exceeded
during the test duration.