Re: Scissors problem Hello; 1- First of all, the stability beams are connected to the lower head of one truss and the upper head of the other, if you want to do it this way, you need to create symmetry at the same point, that is, there should be an X diagonal image. Another cross coming out of the upper head of the truss connected to the sub-header must be connected to the lower head of the other truss. After doing this with a single cross, divide one of them with the divide command and connect the crosses together with the cross joint. 2- According to EU 3, the sections are divided into their classes and change to the equation. The wall thickness of the sections you use in the truss is very thin, anyway, this wall thickness is also reduced by a cross as per the regulation, you need to increase the wall thickness so that the sections can pass from class 3 to class 2 or 1 and get more favorable design results.