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Loads for fire resistance analysis

The forces, that are used for the analysis of fire resistance, should be determined according to the rules for accidental combinations given in EN 1990. The combinations are given by expression

Where is:

Gk

  • The characteristic value of permanent load

Qk,1

  • The characteristic value of main variable load

Qk,i

  • The characteristic value of other variable loads

Ad(t)

  • The design value of accidental load in fire situation, dependant on time t

γGA

  • The partial load factor for permanent loads in accidental combination

ψ1,1,ψ2,i

  • The combination factors

The load may be determined for time t=0 and consider these conditions as constant for the whole length of accidental situation.

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