Which stabilization tool is used to support collapsed structural members?

• A. Tripods
• B. Bar Screw Jacks
• C. Spreader bars
• D. Wedges

Answer: (B)

The tool used to stabilize collapsed structural members is the bar screw jack. This device provides adjustable, solid vertical support that can be placed under a sagging beam or other compromised member and raised or held at a precise height. When paired with cribbing and base plates, bar screw jacks create a stable shoring system that prevents further movement and allows rescuers to work safely beneath or around the collapse, or to relieve load as needed.

Tripods are mainly for lifting or establishing a stable point for lines and access, not for sustained vertical support of heavy collapsed members. Spreader bars are used to distribute loads or create space between members, rather than to bear or adjust a load themselves. Wedges help prevent or control movement but do not provide the continuous, adjustable support required for stabilizing a collapsed structure.