Hello there; - First of all, the wall load on your beams was the default value of the program. Change it to 0 as you will not have a wall load on the roof. - The high cross-sections of the beams do not constitute a situation where the columns do not save, because you do not have any significant load in your model. Loads such as coating, snow, wind are not available. There does not seem to be a reason for it not to save with its own weights, but if you have calculated it manually or if you have obtained different results in the same modeling in another program, please send it to us, if there is an error, the necessary work will be done. However, in general, there does not appear to be a problem with these elements as you mentioned in the tests. - While modeling your lovers, you need to make some changes so that they do not conflict with the junction plates. You can find it in the attached image. I made some changes in your projects. Please review. Good work.