Tie-Down Requirements

Quick Answer

Tiedown requirements depend on the load, not just a quick count. Weight, length, cargo type, tiedown use, WLL, blocking, and commodity-specific rules can all matter.

Practical approach

Confirm the cargo first, then look for a commodity-specific section. After that, review tiedown placement, credited WLL, contact points, edge protection, and whether blocking or bracing is part of the plan.

If the load is unusual, treat the calculator and checklist pages as prompts, not answers.

Watch for these mistakes

A quick strap count can miss short heavy cargo, long light cargo, unstable shapes, or cargo that needs blocking before tiedowns can do useful work.

Scope limit

This page does not set a universal tiedown minimum for every load. Verify the current rule and carrier policy.

Source notes

The page is mapped to the current eCFR tiedown section and the FMCSA overview.

Start with the load, not the strap count

The most common mistake in tiedown planning is starting with a number of straps and working backward. The correct approach starts with identifying the cargo type, checking whether a commodity-specific federal section applies, and then applying the applicable performance criteria.

Some loads need blocking, bracing, containment, friction, or edge protection in addition to tiedowns. A load secured with the 'right number' of straps can still shift or fall if the straps are routed incorrectly, anchored to unrated points, or protecting edges poorly.

The length-based tiedown rule

Under 49 CFR 393.110, an article 5 feet or less in length and 1,100 lb or less must be secured by at least one tiedown. An article 5 feet or less in length but exceeding 1,100 lb must have at least two tiedowns. For articles longer than 5 feet, the minimum increases with length.

These are minimum counts under the general rule — they are not the whole picture. The aggregate WLL requirement must also be met, meaning that the combined credited WLL of the tiedowns must meet the applicable performance standard. A load secured with the minimum tiedown count but with undertensioned or underrated devices may still fail the aggregate WLL test.

Verify the current eCFR text for 393.110 before using this summary for a live load. The thresholds listed here are from the regulation as of the last review date, but rules change.

How commodity sections change the requirements

For cargo types with a specific federal section — metal coils, logs, lumber, concrete pipe, and others listed in §393.116–§393.136 — the commodity section specifies how tiedowns must be positioned, what types are required, and what alternative methods are permitted.

Commodity sections often require a specific number of tiedowns regardless of length, mandate particular tiedown positions (front, rear, at certain intervals), or require a combination of tiedowns and blocking. A plan that meets the general 393.110 count may not meet the commodity-specific standard.

For cargo types that do not have a commodity section — general flatbed freight, machinery, pipe bundles not addressed by a specific section — the general rules in 393.100–393.114 apply.

Tiedown angle and placement

The angle between a tiedown and the cargo surface affects how much of the WLL is actually doing work in each direction. A tiedown at a steep angle contributes more vertical force and less horizontal restraint than the same strap at a lower angle.

Placement matters too. Tiedowns spread across the length of a load provide better resistance to shifting than several tiedowns clustered in the middle. For long loads, the regulation specifies how far from the end of the article the first tiedown should be positioned.

Use the tiedown planning tools on this site as a starting point, then verify against the current regulation and qualified guidance for the specific load.

Practical Notes

This topic carries elevated securement risk. Verify the current eCFR rule text, carrier policy, shipper requirements, manufacturer ratings, and the physical condition of every device before a truck moves.