Never stack more than how many pneumatic air bags?

Never stack more than how many pneumatic air bags?

• A. 1
• B. 2
• C. 3
• D. 4

Answer: (B)

Never stack more than two pneumatic air bags. This limit keeps the lift stable because two bags provide a reasonable base and predictable load distribution. Adding a third (or more) increases the risk of instability: the stack can shift, bags can slip, or a bag can fail, leading to a sudden drop or collapse. For higher lifts, use cribbing and progressive, controlled lifts or other appropriate methods per protocol rather than stacking additional airbags. Using one bag may be insufficient for heavier loads, and using more than two introduces unnecessary risk.

Never stack more than two pneumatic air bags. This limit keeps the lift stable because two bags provide a reasonable base and predictable load distribution. Adding a third (or more) increases the risk of instability: the stack can shift, bags can slip, or a bag can fail, leading to a sudden drop or collapse. For higher lifts, use cribbing and progressive, controlled lifts or other appropriate methods per protocol rather than stacking additional airbags. Using one bag may be insufficient for heavier loads, and using more than two introduces unnecessary risk.