The study looked at how cold-formed steel roof trusses behave under different conditions. By using computer simulations, the researchers could predict which part of the truss would fail first and why. They found that for longer spans, one truss design was better than another. By analyzing the strength of each truss component, engineers can predict which part will fail first and ensure the truss can still support the load. This means that even if one part fails, the truss as a whole is still reliable.