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External Window Fires
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Structural members located outside a compartment
may be exposed to fire through the windows of the compartment when
there is occurrence of fire in the compartment. The direction of
the fire flame from the window will be deflected due to wind effects,
and hence the thermal actions on the external members.
Annex B (informative) of BSEN1991-1-2 provides
a simple calculation approach for determining thermal actions for
external members due to fire through windows of fire compartments.
Basically, this method provides the following
information:
- The maximum compartment temperatures
- The size and temperatures of flame from openings
- The heat transfer parameters of radiation and convection
The section will briefly discuss followings,
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