You specify the thermal bowing deltaT (Temp_Top - Temp_Bottom) on the Special Execution Parameters dialog. This deltaT is applied to all load cases that include temperature load primitives. For example, both load cases below would include the effects of thermal bowing:
1) W+T1+P1 (OPE)
2) W+T2+P1 (OPE)
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Regards,
Richard Ay - Consultant