[cliff]

You have the more normal type and the photo below shows that it does have a steel deck inside. Photo is from Pictures Australia and is from one of the State Libraries. It has always been my understanding that this type of tipper body was all steel.


here is another photo of the same truck as above. I have used photo shop to lighten the shadows under the deck and it appears to be an all steel body to me. Photo from the same source as above.