What is the effect of stacking two bags?

• A. Increases lifting capacity
• B. Increases height of the lift but does not increase capacity
• C. Decreases stability
• D. Increases speed of lift

Answer: (B)

Stacking air bags mainly affects how high you can lift, not how much weight you can safely lift. Each bag has a rated lift capacity, and when you stack them, you’re increasing the height of the lifting assembly by adding more bags to the column. That extra height lets you raise the load higher, but it doesn’t change the per-bag capacity or automatically multiply the overall safe load. If you need more lifting capacity, you’d need bags with a higher rating or a properly designed configuration that shares load according to safe lifting practices. As you raise the load higher, also monitor stability and base support to keep the setup safe.