The two-support system is a very cost-efficient solution with two vertical columns and additional bracing by a diagonal strut. Instead of one or two solid supports without additional bracing, this system creates a flexurally rigid truss via the diagonal. This has equivalent load-bearing properties while using less material. Furthermore, the bearing forces on the ground are significantly reduced, especially compared with the single-column system - with the advantage of simpler foundation design. The system is also characterized by high stability. The two-support system is therefore preferable to the single-support system if the soil can be rammed into well.