0.8 g securement

I thought it was 0.8 to the rear not forward?

 

80% of 20000=16000/6600=2.42 or 3 rounded up. 4 points for a vehicle over 10k plus 80%g force pull. You need 5 total. 2 forward, 3 rear.

What's throwing you off is the direct securement rule. Indirect for 20000lbs would be 20000/2=10000/6600=2 points of securement indirect.

 

Don't worry about that I've NEVER been hassled about is as a matter of fact the book says "Generally, motor carriers are not required to conduct testing of cargo securement systems to determine compliance with the performance requirements. The new rules explicitly state that cargo immobilized or secured in accordance with the general securement rules, or the commodity-specific rules, are considered to meet the performance criteria." The math is more complex than that, it says securement must be able to withstand 0.8 G's of forward movement not 80% of your securement. I've also seen it written (but can't find it right now) that this is based on the ultimate breaking strength not the wll of the device. You meet the minimum tiedowns you'll be fine

 

That whole g securement rule is bs anyways. We're truck drivers not mathematicians. I do my 4 points and then an extra pulling back for me.

 

I know this subject has been looked at from every which way, here is a method I did on purpose a couple months ago just for a pic.
Direct: Trailer to load.
Indirect: Trailer, around, thru or over & back to trailer.
This would be opposite ? of indirect? giving the same 100% WLL ? From load, thru trailer & back to load.
Your thoughts... Ya'll are better schooled on the legal stuff.

 

It has to go from one side of the trailer, over, thru the load to the other side of the trailer to get 100%.

 

No they changed it now it says "
The working load limit for each tiedown that goes from an anchor point on the vehicle, through, over or around the cargo and then attaches to another anchor point on the vehicle" it used to say "the other side but they changed it, for the record I learned it right here. Here's the link Minimum Working Load Limit for Cargo Securement Devices and Systems - See more at: https://www.fmcsa.dot.gov/regulations/cargo-securement/cargo-securement-rules#sthash.iJo9B12r.dpuf @rank posted it and set me straight in the securing an excavator to a step deck thread. @truckdad I'm not sure your way counts since it only hooks to the trailer once, not saying it really makes a difference in the real world but might on the side of the road I've done it the exact same way plenty of times. I make sure I hit the minimum number of tiedowns then I just make sure I'm comfortable with it I don't spend that much time thinking about it.

 

Your pic would be direct securement. Indirect securement pulls the load down on to the trailer. Direct securement pulls the load a certain direction.

Say for example you get a big steel beam on a trailer. You throw your securement over the top from one side to the other and tighten. That's Indirect, right? Now if they weld lifting tabs on this beam and you secure it through the lifting tabs, that's Direct. Now the reason why they half the WLL is because if if you have securement pulling to the left, it is useless unless you have opposing securement pulling to the right.

Now in your picture, you're pulling a load that requires 4 points pull direct. Foward left, rear left, forward right, rear right. Your pic looks like a rear left pull. If you don't match it on the other side, the securement you do put on isn't really doing anything.

 

Could be for piece of mind but the regs dont state that they say; "The working load limit for each tiedown that goes from an anchor point on the vehicle, through, over or around the cargo and then attaches to another anchor point on the vehicle" it doesn't say anything about pulling any direction. That's copied and pasted directly from the FMCSA website.