I know this is not strictly military, but it has a link with a diorama I am planning. The idea is to depict a scene at a WW2 military vehicle show, with a commercial truck offloading a military vehicle, ready to join the other exhibits at the event.
My question relates to the load carrying capacity of a three-axle lorry (with twin wheels on the rear two axles). The lorry in question is a Mercedes-Benz Eurocab (fixed body), which I intend to convert into a 'beavertail' low-loader. I need to work out what such a lorry would be able to carry, as this will determine the type of WW2 vehicle to be added. Any suggestions welcome.

Thanks.