Objectives

 

After completing the module the student should:


• 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 members.

• 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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