new project - 2 straight tank trucks

[skeeter]

Originally Posted by Fury Fan

Correct by both guys. Most trucks that have a bunch of axles are for road-loading regulations (aka bridge laws) for the roads they travel, it's independent of the GAWRs the truck is built with. For a single drive axle, GAWRs of 19k-23k are pretty common, yet almost all states limit the weight of a single axle at the GAWR, or 20k, whichever is lower (steer axles are generally quite lower on GAWR). If you've ever seen the cement-mixers with that funny drop-down axle-arm hanging off the back, that's to satisfy a bridge law for that region.

Then of course, if a truck's vocation requires it to have extra axles to avoid getting stuck, the manufacturer or bodybuilder puts them on, to make sure they can continue selling trucks into that job.

I couldn't have said it better myself!