Comedy writes itself

Well, if it's pulling to the rear, it will definitely help more to prevent the coil from climbing over the timber, since it has both downward and rearward components to the force holding the coil in place, where the chain across the bottom has only the downward (and no rearward) force on the coil.

Plus, it is specifically called out in the regulations, as noted above. Here's the illustrated version of the regulations for hauling coils.

 

Well, how well can a tiedown Pulling toward the rear provide downward pressure? The tiedown in the middle does provide downward force and rear/forward force as the coil would need to go up over the timber before it could go forward. Once the coils starts moving I don't think a single tiedown is going to help stop it.

You could have two tiedowns in the middle or one at each end. If it was one at each end you would have only one tiedown preventing forward motion. Would that one be better than two in the middle?

 

Man, you should be a detective lol

 

Keeping it secured from going forward or backwards doesn’t do anything when they go around corners too fast and lay it on it’s side.

 

Tie downs should be spread out. On a small coil, yes, technically securement that only pulls straight down should do the trick. On a large one it gets spread out.

The regs call for one pulling forward and one pulling backward, spread out so that the angle between the chains and the deck is less than 45 degrees if possible. This means two chains straight up and down is not good enough.

Any chain that runs at an angle that is inside the angle of the center of the coil to the timbers will provide downward pull to help keep it in the rack, but only minimally so, depending on the angle.

So a chain pulling backwards, at an angle, will help to prevent forward movement by pulling backwards, as well as by pulling downward into the cradle. It may help to prevent rearward movement if the angle is steep and it is pulling into the cradle. If that makes sense.

I use a strap over the top of my coils, in addition to the usual chains, to help keep the coil in the cradle, and to increase the force on the friction pads to prevent the whole rack from moving.

 

Sure, but you can lay any kind of big truck on its side since most all of them have a high center of gravity. The requirements for lateral securement is 20% of the weight.

The regs aren't designed to keep everything on the deck if you roll the truck. They're designed to keep everything on the truck assuming you're not dumb enough to roll the truck by taking corners too fast.

 

I'm guessing they'll have to change that soon now I'm guessing with the winners they're letting make the rules.

 

How sweet. Lol

 

Yeah, you would want more than two chains on a large coil, two was just an example. You have two chains on a coil. Would you prefer two in the middle pulling straight down, or one at each end at say a 45 angle?

This isn't going on public roads. Myth busters is doing an episode on coil securement with only two chains. Where do you put your money?

 

All trucks have a rollover prevention device, it’s called a speedometer and a brake pedal.