A driver is transporting a load of empty barrels that are stacked two high on a flatbed trailer. The barrels are not interlocked. What is the minimum number of tiedowns required for this load, assuming the load is 20 feet long?
- A2 tiedowns
- B5 tiedowns
- C3 tiedowns
- D4 tiedowns
Show answer & explanationAnswer & explanation
Correct answer: D. 4 tiedowns
For unsecured, stacked, non-interlocked cargo like empty barrels, the general rule is one tiedown for every 10 feet of cargo length or fraction thereof, with a minimum of two. However, since they are stacked and not interlocked, additional security is needed. The rule for stacked, non-interlocked cargo often requires more tiedowns than simply length-based. For a 20-foot load, this means at least two tiedowns for length (20/10 = 2), and often double that for stacked non-interlocked loads to ensure stability, leading to 4 tiedowns.
Why the other options are wrong
- A. Two tiedowns are the absolute minimum, but insufficient for stacked, non-interlocked cargo over 10 feet.
- B. Five tiedowns would be excessive for this specific scenario.
- C. Three tiedowns would be for a load between 10 and 20 feet if it were a single, unblocked item, but not for stacked non-interlocked cargo.
Securing Stacked Non-Interlocked Cargo
Cargo that is stacked but not interlocked (e.g., empty barrels) requires more rigorous tiedown methods to prevent shifting and falling.
- Increased risk of instability due to stacking and lack of interlocking.
- Requires more tiedowns than single-layer or interlocked cargo.
- General rule: one tiedown per 10 feet of length, with additional tiedowns for layers.
Memory trick: Stacked but not stuck? Double up the straps for luck!