Don't be this guy

If he stayed there long enough a Swift would back into his right side and straighten them things out.

 

You mean the same Swifty that backed into his *left* side and caused this predicament???

 

I agree with you.

 

Dehumand iw correct, it is a standard pipe load, and he has plenty of straps. If you look closer, it appears that some of the dunnage may have snapped, causing the load to shift. Look at the dunnage on top of the first layer, it is pointing "up". This is always a worry when hauling pipe, and I make darn sure I take corners nice and easy.

 

Which is why he should have gut wrapped it.

 

If you look closely all winches on one side, with at least one 4x4 dunnage broken but the biggie prob here is that his dunnage only had wedges nailed to the top of the 4x4, none on the bottom side.. causing the dunnage to slip sideways and shifting the load.

 

all of our trailers have winches on only one side of the trailer and we haul all kinds of pipe, no one has ever had a problem to my knowledge. Like SHC said probably a combination of no chocks, soft or bad wood and/or driver error.

 

We have a few trlrs with winches on one side as well,,, I bought 8 4" ratchet straps to use on the "off" side... issue solved

 

I also believe *several* factors were involved in the load shifting, however the fact that all winches were on the same (left) side will certainly add a negative "side force" effect on the load. Common sense & common physics. That is, unless you have a 100% friction-less contact point(s) where the straps contact the top pipe row. That's certainly not the case in nearly all loads/securements, even round pipe.

This results in (numbers only for simplicity purpose) say,, 2000 lbs strap tension on the winch side versus, say,, 1200 lbs tension on the rub-rail side. Now multiply that tension difference by number of straps. Guess which side the pipe wants to shift if *any* other contributing factor comes into play (cornering, dunnage side-slip, etc)? Dunnage should have been blocked top & bottom, but also having straps alternate winch sides equally (right & left) surely would have helped equalize right-left strap tension.

On a third note.. seems to me the pipe appears to be fairly heavy-wall (3/4" to 1" possibly) judging from the pics. Each pipe, needless to say, is an extremely heavy sumbuck. That said, I think his dunnage should have been increased to 6 rows per tier, not just 3 rows (as pictured). Three rows is too weak to carry that load, should any little unexpected side-shift occur.

 

got a couple myself and want to get a couple more. Very handy to have around.