Weight Distribution across a flatbed trailer?

Decided to continue here with my first OS load since the issue was not where I thought it might be (meaning legal side with permits). Today was the day of THE Crane guy. 6 x 55' long pipes, 1.5' FOH, 2' ROH, overall weight 44k. To make it short - two piece of dunnage in front behind the fifth wheel and two piece almost at the end of the trailer. That's it. I was too late to see and realize what they were doing and they had put two pipes already. So I asked to lift them up and started playing with the dunnage. There was no way I could arrange them so the pipes were laying flat. It was either front or back of the pipes playing on the middle wood. And the dushbag said he wouldn't give me a single piece of thinner wood of his. After several attempts he just put it back the same way - two in front, two in back and added one in the middle. Which I'm not sure gets enough pressure. I protested and he called his boss, the broker, my dispatch etc and the scene has started. So since it only was 320 miles, I decided ok, let it be the way it was. However, every time I go past the trailer my heart is crying. Scaling showed 12k, 25k, 37k. So numbers and driving show that everything is ok (Could be better, of course). Yet I'm pretty upset and stressed out about how the rear part is looking.
Right after load:

Front shot:

Rear shot:
Not sure if the curve is visible here. Or maybe I just became too sensitive.

And just an overall shot after strapping. Tried to belly strap the middle as much as I could. Not sure if this helped to take any load off the sides.

What do you guys think?

 

Placement of the boards doesn't matter for weight distribution. The only way to load the drives heavier with that load is to have more front overhang or maybe spin the pieces around if they were heavier to one end.

Those pieces are too long and have the weight too spread out to take the arch out of the trailer. They are clearly able to support their own weight so 1 board on each end is fine. Trying to get long stuff like that to sit on more than 2 points is a pain with trying to shim everything so the boards stay put.

The next issue is the what looks like CA axle placement with a short wheelbase tractor. You don't have room to move a load like that forward. You did the best you could with that load and kept the axle weights legal at least.

 

Nice job, considering.
Razororange has you covered. About the only thing I'd have done different, is to put more straps on that first level to keep it tight to the trailer, and then put two belly wrapped straps one in front and one in back on that top pipe, to cinch those where they would most likely move at...but remember, technically belly wrapped straps don't count toward Aggragate WLL calculations.
More straps is always better, but when I was hauling pipe loads, I focused on making sure the lower level didn't move, and the higher level was kept cinched and tight also. I like that you put two on the back, as I would have also, but I think you should have put one more on front, as is required when there is no bulkhead....besides, it can't hurt to have one more keeping that front down on the front of the deck to keep it from coming in the cab.
Welcome to the Thunder Dome.

 

In my opinion, the last strap should’ve be behind your dunnage. That will typically keep the dunnage from walking backwards. Other then that it looks fine.

 

Last time I had pipes, I put a strap at an angle and it did hold excellent. That was a 2,000 mile drive. I should have done it this time, too, whatever the trip was. Something like that:

 

Yep, that's usually what I do, strap front and back of the dunnage for that reason, also.

 

That blue line really is too angular for that kind of load...putting your front strap over both levels in the front, would have handled that right, and you'd have been able to put the cinch and lower strap just behind that, and then another strap over both levels in back of the dunnage, should have been the plan...but...it's done now, right? That's for next time you do it, knowledge.

 

I know this question depends on many things, but still want to ask. 46-47k lumber or wall-boards that are loaded with a top stack in the middle - drive me insane at tarping. So given a 53' trailer with CA spread, do you think moving the first stacks to the front as much as possible and putting the last two stacks at the end instead of the top, would still work? Say, for example, as long as they won't extend behind the last axle? Which is about 42'-44'. Always wanted to try this but my next such load is to CA and I don't want to risk blindly.

 

Not sure why that stack in the middle is such a thorn in your side, but the point is balance and weight distribution. You can lay it out any way you want, as long as your numbers are legal for the axles and overall. Once it's on your truck, scale before you leave the yard and have them reload it if it's not right (but always doubt the accuracy of their in-house scales) if they will do it for you. That's the problem with trying to change from what's "normal" for a load. You need to have a good reason for alternating, or at the least, be ready to do the work yourself to experiment..and production facilities are unlikely to play around like that because since the shipper is responsible to properly scale the load, and you're responsible to make sure they do that, you better have a definite knowledge that your choice will work to balance the load overall and over the axles properly. If the shipper ships it like that and it's legal, your pet peeve will have to take a back seat to necessity.