In my previous blog post, we discussed the mathematics of how the Working Load Limits (WLL) is a relatively small percentage of the actual strength of the components. Now let’s discuss the rationale of making it so small.
Simply put: SAFETY.
The device must not fail. Life, limb, and property depend upon proper operation.
When a device is tested close to a maximum it breaks down. Redline your engine enough and you’ll need a new one shortly. If a cargo restraint device has any components with a tensile or WLL at or just under the advertised product’s WLL, your employees will be testing the device at its max unknowingly.
Restraints fail at max, so err on the side of caution
WLL recommendations for cargo restraint devices must always err on the side of caution. Devices rating the WLL at or above any components tensile strength must be thoroughly examined and inspected. We stringently stick to independently tested WLL and label each product accordingly. I encourage you to check out this information on how WLL are manipulated that contains a chart of BEDNET® WLL ratings. Any questions? Contact me directly at firstname.lastname@example.org.
This post was originally published on Jan. 31, 2014, and has since been updated.