Re: Combination of truss to reinforced concrete structural elements.(Scissor arm Hello; With version 8.103, the problems of joint points in reinforced concrete-steel mixed systems have been fixed. There may be errors you have read about old versions. This is the reason for the detailed explanation. In the videos on the link I sent, ide CAD Steel 8 is explained in general. It is a 5-hour training package and all the features of the program are mentioned, for details, honeycomb beam design, composite beam design, joint designs, etc. videos on different topics in the coming months. The combination I mentioned for you to use is the support joint. The attached image will help. Good work.