I agree the best way is to model the support and check. but the question is what temperature to consider for the dummy leg. So far I have not found any correct way to guess this temperature. I know I can play with the temperature and make a satisfactory report but what about the real world situation.
But at the same time I understand that this is a very common way to support and I may be missing something in my understanding. I hope our seniors will share their knowledge regarding a correct/better way to design/analayse this case.

Regards
Siv