When breaking a tempered glass door, where is the most effective location to strike?

Striking a tempered glass door at the bottom corner is effective due to the inherent properties of tempered glass. Tempered glass is designed to be strong and withstand pressure, but it is particularly vulnerable at its corners. When you strike near the bottom corner, the impact can create a stress fracture, leading to a shattering effect.

The bottom corner is advantageous because tempered glass typically breaks in a manner that sends shards away from the impact site, and targeting this area can exploit the weaknesses that arise from the manufacturing process. The other locations may not produce the same result, as the center and edges may not cause sufficient stress to initiate the breakage, while the top corner is still relatively structurally sound compared to the bottom corner where the stress can be maximized.

Understanding these principles is crucial for effective tactics in emergency situations where breaching a tempered glass door is necessary.