Comedy writes itself

OK, Imagine the shackle in the middle is a coil and the chains are coming out of the eye and getting tiedown. Do we still want throw X-amount chains and figure their WLL as 100% when calculating aggregate WLL?

 

That’s when your pulling towards the center, in load securement we’re pulling out.

 

I'm not sure how that makes a difference.

We would be pulling outward when tightening a binder, but if the coil wants to move it will be pulling, it will be doing the pulling, towards the center.

 

Well first your original point lifting and securing are entirely different. Second if the rigging is pulled inward, look at the forces applied because of the low angle of the rigging. It you’re pulling outward like to the edge of a trailer your applying force different than you are in your lift scenario. Take a couple rigging classes and get back to me.

 

You’re not lifting you’re securing again for and aft movement. The Regis say “not more than 45 degrees from the deck when viewed from the side” I’m not saying I agree with it and that would mean most coils I see aren’t chained properly.

 

I still don't see how it matters.

Granted we are not trying to lift the coil up we are trying to "lift" it down when securing it. It's the same principal but reversed isn't it? We might aswell turn the trailer upside down and be trying to lift the coil with the trailer. Even more so if the coil is trying to move having some momentum to it, it won't just be dead weight.

 

It's true in crane rigging, the more the spread the less the capacity of the rigging. In theory the same thing would happen with chains on a coil being angled forward and back, therefore reducing their WLL.

 

Sure

 

The chaining to a deck is most like the first with two hooks.

 

Let me guess does it Start with S and end with T ? with a W in the middle.