During Rutshblock testing, which action is performed on hard slabs?

• A. RB6 Hard slabs: remove skis and jump
• B. RB3 bend knees
• C. RB2 1 step down onto block
• D. RB4 jump in same spot

Answer: (A)

Rutshblock testing uses a prepared snow block to gauge how readily a slab will release under load, and the action you perform depends on how hard the slab is. For hard slabs, the test calls for removing skis and then jumping. Removing the skis eliminates ski-snow effects and ensures the load is applied directly through the boot, making the test more representative of a dynamic load. Jumping delivers a quick, high-energy force that is more likely to trigger a release in a stiff, hard slab, giving a clear indication of stability. Bending the knees or stepping one step down apply less dramatic loads and aren’t as effective at testing hard slabs, and jumping with skis on can alter contact and friction, reducing test reliability.