Hello, I would like to request your support in the following aspects of the attached project, 1. Steel beams with a span of 24 m. I passed, do you think it's healthy? It will be loaded with purlin and sandwich panel. 2. Have you ever tried to make steel beams to reinforced concrete columns with gusset joint or do you have any recommendations? I can't get the calculations, report and drawing of the join. 3.Do you have a different recommendation for this system? 4. There are slab thicknesses in the reinforced concrete part that do not recover after analysis, what can I do for them? Waiting for your reply, I wish you good work.