First steel coils

The mid marker light is just behind the 3rd pallet.

 

That weird screwed up trailer is a good example of why you need to know how to find the center load line. But I much prefer my plain Jane Great Dane. 1 ft behind the turn signal and I'm good to go. No thinking required for those days I haven't had enough coffee for my brain to turn on.

 

That's a CA legal spread. Bunch of outfits around Birmingham used to run them.

 

That main problem with that load of stone is placement and weight per foot. The four rows of regular flagstone on the rear are the heaviest pallets. The boulders are the lightest and the stand up flag some where in between. A better way to load that load would have been from front to back: 2 rows of flagstone, 1 row of boulders, 2 rows of stand up flag, and finally 2 rows of flagstone. Easiest on the trailer by spreading the weight out and slightly heavy to the real to utilize the spread axles.

In short your center of gravity is too far to the rear, that's why your over on the spread.

 

My 48 ft with a normal 10'2" spread is plenty legal in California. So what do you mean by California legal spread'

 

People like to be safe and load the spread heavy even after you tell them the axles are set forward, maybe they are too busy to remember. Draping a glove over the rubrail at the center seems to be effective.

 

They tuck the back axle up about 2 feet to shorten the KP to center of axle. With a 36" KP it gets it close to 40'. Deaton had a bunch of them, Boyd, and several companies that ran Ca all the time. Never pulled one but that's what they advertise them as.

 

Defeats purpose of a 48, kind of like breasts on a boar hog

 

Myself, I prefer to balance my loads. A lil more weight on the truck or just about even, truck/trailer. Rides better toting the weight, versus dragging it. Course it could be this particular truck.

 

But you don't need to get it to 40.ft. that's why I'm not understanding the purpose. That 40ft kingpin to rear axle law is on trailers over 48. On a 48 the back axle can be right at the rear like normal