Straps and Chains
Cargo straps (tie-down straps) and chains are securement devices used on flatbed, step-deck, and open-deck trailers to anchor freight directly to the trailer. FMCSA cargo securement standards specify the number, rating, and placement required based on freight weight and type.
In Depth
FMCSA cargo securement rules require a minimum of 1 tie-down for cargo under 5 feet long and under 1,100 lbs; 2 tie-downs for cargo 5–10 feet long; and additional tie-downs for every 10 feet of additional length. Each tie-down must be rated (Working Load Limit) at 1/2 the cargo weight.
Ratchet straps are standard for most flatbed freight and cost $15–$40 each depending on length and WLL rating. Heavy equipment and oversize loads often use chains and binders rated to 9,400+ lbs WLL, costing $100–$300 per chain assembly.
Properly tensioned securement is critical — straps and chains should be tight enough that the load cannot shift more than 1 inch in any direction. Documenting securement at pickup with photos protects against claims that damage was caused by inadequate securement.
Usage Example
Example: 'The excavator required 4 chains with binders per FMCSA regs for its weight class. I also used corner protectors under each chain.'
Related Terms
Load Lock / Load Bar
A load lock (or load bar, logistics bar, or cargo bar) is an extendable metal bar that wedges between the walls of a trailer to prevent freight from shifting forward, backward, or sideways during transport. They are essential cargo securement tools.
TARP / Tarping Fee
Tarping refers to covering flatbed or open-deck freight with heavy canvas tarps to protect it from weather and road debris. A tarping fee is an accessorial charge of $50–$300 that compensates drivers for the labor of applying, securing, and removing tarps.
Oversize/Overweight Permit
An oversize or overweight (OS/OW) permit is a state-issued authorization that allows a vehicle to operate above standard size or weight limits. Permits are required when loads exceed 8.5 feet wide, 13.5 feet tall, 53 feet long, or 80,000 lbs gross.
Cargo Insurance
Cargo insurance (also called motor truck cargo insurance) covers the freight a carrier is transporting in the event of theft, damage, or loss during transit. FMCSA requires a minimum of $5,000–$10,000 cargo coverage, though brokers commonly require $100,000.
Frequently Asked Questions
How many straps do I need for flatbed cargo?
FMCSA requires at minimum 1 tie-down per 10 feet of cargo length, with total WLL at least half the cargo weight. More are often needed for heavy or unbalanced loads.