Securement Question

They changed the indirect thing. Now it just has attach to a different point in the trailer not the other side. If he's hooked to two different stake pockets rated a 5000# he gets credit for both pockets for s total of 10,000. In Ohio and other states the way he has it chained he would get the WLL of the chain on ever two lifts because the binder going to the deck and the other end of the chain going to the deck.

 

What are your chains rated at?

 

Hurst, basically it comes down to where the ends of the chain are connected. If you have both ends of the chain connecting to an anchor point on the trailer then you get the full WLL. If you only have one end of the chain connected to an anchor point on the trailer then the WLL is cut in half.

I think the way you did it is just fine. I would not go more than 4 machines but that is just my personal preference. The only thing that I may have done differently is the binder in the middle of the chain would have been a ratchet binder instead of a snap binder. Just my preference though.

You don't add the anchor points together. Your WLL is based on the single weakest point in the securement. Adding a stake pocket to the securement does not add strength to the other stake pocket. In this case I am just assuming it is 5/16" grade 70 chain with a WLL of 4700 pounds. That would be the weakest point.

 

Yes you do, if I have a 6600 pound chain hooked to two 5000 pound stake pockets you get the full 6600 pounds. The stake pockets are only taking half the load. Look at a multi part crane block or the rating for a chain or sling in a basket hitch. If I take my 15,000# grade 10 lifting chain hook it to a hook drop it through something and take it back up to the hook it's hood for 30,000. It's still a single chain and still only has two hooks but it doubles its capacity.

 

It has been my understanding that indirect securement starts at one point then goes "through, over or around" the object then to another securement point. "Through" as like you secure a coil, "over" like you secure lumber, or "around" like you are choking a bundle of pipe.

 

If you hook to the trailer then directly to the machine that's a direct tie down and the WLL gets cut in half. If you hook to the trailer go through, over, around ect. and back to the trailer like you did that's an indirect tie down, you get full WLL for that. When I tie down a backhoe for example, I use a 16' 3/8 grade 7 chain, I hook one end of the chain through the tiedown eye on the hoe, then I hook my binder on the deck and to the chain then bind it tight. I do the same with the other end of the chain with a different binder on the other side of the trailer. In Ohio this is considered two separate tie downs even though is one chain. I've been told some states will hassle you over it but I've never been bothered.

 

6600.

 

Rigging and securement are two different things.

This is directly from the driver's handbook from the FMCSA

WLL for tiedowns (Section 2.1.6)

The WLL for a tiedown is the lowest WLL of any of its parts or the WLL of the anchor points it is attached to, whichever is less.

- See more at: https://www.fmcsa.dot.gov/regulatio...general-cargo-securement#sthash.5yrqT63N.dpuf

 

I cant remember what doing it that way is called but we just got a insert with our paycheck in the last month from the global headquarters stating "Even though we as a crane company know this method of securement works the DOT doesn't recognize it for load securement.