Posted by John in La on July 02, 2010 at 19:18:57 from (67.35.227.237):
In Reply to: Hauling chain posted by 37 Chief on July 02, 2010 at 10:24:11:
You can use any size or grade chain that you want as long as you have enough rating to cover the load weight in all directions. The DOT will use these regulations 0.8 g deceleration in the forward direction 0.5 g acceleration in the rearward direction 0.5 g acceleration in a lateral direction
So if your load is 5000 lbs you need enough chain to hold 4000 lbs forward and 2500 lbs rearward and lateral.
Grade 4; 43 and 430 is all the same stuff. Your problem is your hooks are not marked so you have to use grade 3; 30 or 300 charts. You have to use the weakest link in the hold down and go by that rating. In other words buying grade 70 chain and not using grade 70 hooks or tie down points still makes you use the lower charts. Any piece that is not marked (such as a rusty grade 70 chain) has to use grade 30 charts because the markings must be readable.
Since you did not say the size of your chain I will give you the grade 30 working load limits for a few sizes. 1/4.... 1300lbs 5/16... 1900lbs 3/8.... 2650lbs 7/16... 3700lbs
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