Testing Cargo Nets For Safety: How is Strength Determined?

Just as each vehicle is rated for the maximum amount of weight it can safely carry, so too is the equipment being used to ensure that the load is safely secured. Some drivers make the mistake of using equipment that is not suitable for the task, or at the very least not rigorously tested for its true strength and durability. This is an especially common occurrence when using rope, or even bungee cords. While rope can sometimes be strong enough for securing a load, the truth is that it's too hard to know how strong a length of rope is, considering the many things that can weaken it over time. Bungee cords, on the other hand, should never be used to secure cargo, thanks to federal laws designed to create safer cargo hauling standards.

Instead of using questionable materials, it is best to purchase a cargo net. With a cargo net that achieves high testing standards, you can be confident that your cargo will remain secured. When choosing between cargo nets, though, it is important to know which is best. So, how is cargo net strength measured?

Working Load Limit (WLL)

• The WLL of a given cargo net is determined by testing for the maximum load it is capable of carrying without breaking, then dividing that number by a predetermined safety ratio. U.S. and Canadian governments both use a safety factor ratio of 1/3.

Failure Testing

• In order to determine the WLL, the effectiveness of products is tested through a method called failure testing. Failure testing determines the overall amount of weight that the cargo net can bear before its structural integrity is compromised. Failure testing is done on the entire cargo net as a fully assembled piece, and also on individual components of the full cargo net. By determining the strength of each component, it is easier to prevent a chain reaction of small failures that ultimately lead to a catastrophic failure.

Building for Better Safety

• The first priority of cargo nets is, of course, to keep cargo and drivers safe. In order to achieve a high WLL standard, cargo nets should be built from only the best components. Quarantine cargo nets come with four detachable tie-downs, four

extra-strong carabiners, and the option to purchase extra tie-downs for further security.

Testing done by Quarantine Restraints has proven that Quarantine nets have a WLL of 1,968 pounds, a number well above that of any other cargo net on the market today. When you purchase a cargo net from Quarantine Restraints, you will see that the WLL of each component is clearly labeled. Backed by high-quality components and rigorous testing, you can be sure that your cargo net is more than ready to handle its task.

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