Quick Answer
FMCSA's cargo securement rules come down to two math checks and one principle. The math: your tie-downs' combined working load limit must be at least half the cargo's weight, and the minimum count is one tie-down for articles 5 feet or shorter (up to 1,100 lbs), two for anything up to 10 feet, plus one more for each additional 10 feet. The principle: cargo must not shift or fall under hard braking and turning forces. Securement was this year's Roadcheck vehicle focus — inspectors are looking.
Key Takeaways
- The 50% rule: aggregate working load limit (WLL) of all tie-downs ≥ half the weight of the cargo they secure.
- The count rule: 1 tie-down for articles ≤5 ft and ≤1,100 lbs; 2 for ≤5 ft over 1,100 lbs or anything 5–10 ft; +1 per additional 10 ft or fraction.
- WLL is printed on the strap or chain — a frayed strap's rating no longer counts, and inspectors down-rate damaged gear to zero.
- Commodity-specific rules (logs, coils, lumber, vehicles, concrete pipe and more) override the general rules for those loads.
The two numbers inspectors check first
Aggregate WLL. Every strap, chain, and binder has a working load limit stamped or tagged on it. Add up the WLL of everything securing an article: the total must be at least 50% of the cargo's weight. A 20,000-lb coil needs at least 10,000 lbs of combined WLL holding it. A cut, burned, or knotted strap contributes exactly nothing — inspectors treat damaged tie-downs as absent.
Tie-down count. Independent of the weight math, there's a minimum count based on the article's length:
Article | Minimum tie-downs |
|---|---|
≤5 ft and ≤1,100 lbs | 1 |
≤5 ft and >1,100 lbs | 2 |
5–10 ft (any weight) | 2 |
Over 10 ft | 2 + 1 per additional 10 ft (or fraction) |
A 32-foot bundle of lumber: 2 for the first 10 feet, plus 3 more for the remaining 22 → 5 tie-downs minimum, and possibly more if the WLL math demands it. You satisfy both rules, whichever is stricter.
The principle behind the math
The regulation's performance standard is simple to say: secured cargo must withstand the forces of hard braking, acceleration, and turning without shifting or falling. Practically that means blocking or bracing against forward movement (headboard, blocking, or friction that's actually real), tie-downs tensioned — loose straps secure nothing — and edge protection where straps cross sharp corners, because a strap cut in transit fails at highway speed.
Commodity rules override the general rules
Logs, dressed lumber, metal coils, paper rolls, concrete pipe, intermodal containers, vehicles, and heavy equipment each have their own securement sections with specific requirements. If you haul one of these, the general rules above are the floor, not the answer — learn your commodity's chapter.
Why this matters right now
Cargo securement was the vehicle-side focus of Roadcheck 2026, and blitz emphases become year-round defaults at every inspection level. Securement violations can park the load on the spot and feed the Vehicle Maintenance side of your CSA record. The good news: unlike brakes, securement is 100% visible from the ground — a two-minute walk at the pre-trip and again after the first 50 miles (straps settle; re-tension) catches essentially everything an inspector would.
Educational content, not legal advice. Confirm requirements — especially commodity-specific rules — against current FMCSA regulations.
FAQ
Q: How many straps do I need for a 20-foot load?
A: At minimum 3 by the count rule (2 for the first 10 feet, +1 for the next 10) — and more if the 50% aggregate WLL rule requires it for the cargo's weight. Apply whichever rule demands more.
Q: Where do I find a strap's working load limit?
A: On the tag or stamping from the manufacturer. If the tag is missing or the strap is damaged, inspectors treat its WLL as zero — replace it.
Q: Do these rules apply to enclosed dry vans?
A: The performance standard applies to all cargo: it must not shift or fall under driving forces. Vans rely on blocking, bracing, and load bars rather than external tie-downs, but a shifted load is still a violation — and a rollover risk.
