Understand Bracing Principles (Compression vs. Tension)

What happens here

The demonstrator elaborates on the structural principles behind the observed strength differences. He explains that the stronger, compression-braced configuration works because the top latch-side corner's downward pressure is effectively transmitted as a compressive force through the diagonal brace to the sturdy bottom hinge-side corner. In contrast, the weaker, tension-based configuration relies on the top rail to hold tension, which is often less robust than the bottom structure, and requires the brace to pull rather than push. He adds that tension-based bracing is only effective if using materials like cable, which are designed to withstand pulling forces.

Goal: Explain why a compression brace provides superior strength for wooden gates.