You 10,600 can change with the position of the kingpin. The farther the kingpin is back from the nose of the trailer the more weight is put on the steers just like having a sliding fifth wheel.
We load our 48' vans to a max cargo weight of 34,000lbs. Putting 20,000lbs on a 48" van is nothing I would not even think about how it was loaded unless the freight is piled in the front quarter of the trailer.
Wow I would hate to pull that trailer. Loading heavy weight behind the trailer tandems can do really bad thing in bad weather, other than riding like
, like have the trailer wanting to pass you when you go down hill. You know a jack knife. I would love to talk to who ever told you about the teeter-totter or balance point thing because the center point between the kingpin and trailer tandems is the actual weight dividing point. I all my years of hauling construction equipment on lowboy trailers if I need to move weight off the tractor tandems a would move the machine more towards the rear and vise versa to move weight off the trailer axles. I could bore you with the whole bridge weight formulas and the use of jeeps, and stingers.
See comment above
Ok the max weight XPO says you can put on a 48' trailer with a single axle truck is 34,000lbs and half of that is 17,000. So you can load 17,000 in the first 24' and 17,000 in the last 24' the only thing remaining is were to slide the trailer tandems too. As for were to put you 8 skids that depends on the gross cargo weight of your load and how much freight you have to put on the trailer. Your 16 feet is only 4 skids spaces and I would put them near the center of the trailer, but depending on the amount of freight I have to load I might load them in the front. 3 single then, side by side then a single then the last two side by side that's 24' as an example. A lot of factors come to play, the weight of each skid, and the size of each skids plays a big role on how to load a trailer.