hauling weight

How do I know legal/safe towing capacity for single axel dump 33000gvw 300 cummins?

 

Georgia. I get the axle weights-but is there a formula/spec for towing capacity?

 

Does truck manufacturers give a spec for this? How would you find if so? Thanks for help!

 

Here is basis for question...im interested in purchasing a 93 ford l8000 with 300 cummins and 10 speed.The heaviest thing I have to haul is an excavator that weighs #27,000. Im trying to avoid a ten wheeler because of a few issues. Cost, insurance, manuverability, storage. I would like your opinions. Thanks guys.

 

Any specific experiences? Thanks.

 

Thanks. I'm in georgia so no triaxles. When I order stone the loads (tandems) are usually 14 to 16 tons because of the weight limits. In NY I hauled 11 tons all the time on my single axle truck. I was was quoted 2400/yr for ins. for a single x and 5500/yr for tandem. My truck use is sporatic so I don't know if I would haul enough to offset costs. If I planned on utilizing the tandem by extra hauling I would have to put on a driver.