• Understand that both steel and concrete progressively lose strength and stiffness at elevated temperatures.
• Understand that fire resistance is quoted in relation to furnace testing
using a standard time-temperature curve in which the temperature never reduces,
and does not refer to actual survival in a real fire.
• Know that EC1 specifies three such standard fire curves, of which two
refer only to hydrocarbon and external fires, but also provides a method of
modelling parametric natural fires if sufficient detail of fire loads, ventilation
etc are known.
• Understand the concept of time-equivalence in rating the severity of
a natural fire in terms of the standard fire curve.
• Know about traditional methods of passive fire protection of steel
• Understand that other strategies may be used in fire engineering design
to provide the required fire resistance, including overdesign, selection of
framing systems, and use of sprinklers.
• Understand the principles of the simple design calculations of resistance
in fire conditions of beams and columns, and the concept of critical temperature.
• Understand the methods of calculating the thermal response of protected and unprotected members to increase of atmosphere temperature in a fire.
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