Master the 2026 Urban Search & Rescue Challenge – Ace the Structural Collapse Level 2 Exam!

Stability under load is the key safety factor in a collapse environment. A ratchet jack sits on a small contact footprint with a tall lifting column. That slim base and high center of gravity make it easy for the jack to become unstable on uneven, soft, or shifting debris. If the ground settles, the load shifts, or the ratchet mechanism releases unexpectedly, the load can drop. Other jacks used in rescue work typically have broader bases and more robust control features, giving better resistance to tipping and a more controlled lift. Because of its tall, narrow design and reliance on a ratchet mechanism, this type of jack is inherently less stable, which is why it’s considered hazardous in lifting operations.