Loading Plastic

This won't really help you probably, but I always just dodged the scales.
Maybe consider pulling liquid tankers.

 

does your tractor have a pressure gauge for the rear tandems?

I pulled dry bulk for a while and that was the part that did me in. lol they didn't give my more than 3 days to get it right. transferred to dry van and the pellets were in gaylords.

so much easier!

 

Air ride ? Put a gauge on it. Do you get paid by the trip or the pound? Rock on!

 

We can assume it's a pneumatic tanker. I used to haul silica sand, I know Chinatown, with no masks, btw( cough), and we had covered dump trailers and pneumatic tanks. I never pulled a tank, but different types of sand came out of the chute at different rates. It was incredibly frustrating, as it was a "load and go" deal, no dumping off excess. Some I'd load until I could touch the top of the pile, but that didn't always work. With plastic pellets, I think they are pretty uniform, ( and not near as dangerous as sand), and it might take a couple tries, but it shouldn't vary much, but it's still incredibly frustrating. It's not common practice to install air gauges on a company truck, and not many places load on a scale, like grain, so the only thing left, if you want to make a buck, take Chinatowns advice, (over)load the wagon( for possible future fines) and dodge the scales. Since that probably won't work for you, trial and error, I guess. I used to haul plastic pellets in a container in boxes and that was a heavy load too. Good luck.

 

Load with one of your other trucks and do what they do. Try timing the loading process to at least get an estimate.