OK, here we will discuss something familiar to most truckers, ratchet straps, as you can plainly see, you can find two words, ratchet and straps, and you also guessed right, the ratchet straps are assembly of ratchets and webbing, think about cam buckle straps? yeah, they are cam buckles with straps! Relatively weak, the cam straps are most seen inside box trucks and on passenger cars. Ratchets are another story, the hardware is pretty strong, and due to it's mechanism, the ratchet can be pretty small and fairly large, it will be easy to find 1''-4'' ratchets around, and the breaking strength can be as weak as a couple of hundred LBS to as strong as 16,2000 LBS, it's pretty versatile compare to all or any other truck tie downs.
starting a box truck business is estimated that 80% trucks are box trucks, and the e track tie down system is merely for semi trailers, so e track straps are hottest cargo straps. And these straps are not as strong because the one we use on flatbed truck, the working load limit of typical e track straps is 1,000lbs, with minimum breaking strength of 3,000lbs. The working load limit of 2' e track straps are less than other 2'' truck straps, for the reason that the truck wall will provide support for the strain and prevent the strain from moving if stacked properly, nevertheless, you still need to make sure the strain in your truck are secured properly and the way to secure them work.
As per cargo securement standard, the look factor of ratchet assembly is 3:1, which means that the breaking strength of the tie down is 3 times of the working load limit, this means that a relatively forgiving work place, on the other hand the design factor of transport chains is 4:1, which indicates the chains will undoubtedly be better fitted to tough conditions, such as for example very high/low temperature, moisture, while the aforementioned truck straps are just for normal conditions.
The truck straps usually created from polyester, which includes low elongation and less elastic, which is perfect for tie down truck load, since we don't want the strain on the cargo area to move or budge. When coming up with tie down straps, manufacturer must follow certain guidelines and pass DOT inspection, this implies all the straps made for tie down purpose have to meet all the requirements imposed by FMCSA(Federal Motor Carrier Safety Agency) and follow the guideline of WSTDA and ASTM.