Go to a truck driving school. You're not going to learn how to drive a Class 8 truck by reading about it on this website.
how many cubic meters does a tri axle dump truck hold
It's a dump truck with four axles--the steer axle in front and three axles in back. One of them moves up and down via a control in the cab, so the tires aren't on the road if the truck's not loaded. A tri-axle dump truck carries more weight than a one-axle or two-axle truck.
A North American truck will be 96" wide.
That's going to depend on the dump truck's configuration. It could be a single axle, tandem, tri-axle, quad axle, quint axle, centipede, frameless end dump, framed end dump, etc.
In the vicinity of 22,000 - 25,000 lbs.
12 or 14. Depends if lift axle has dual tires or not.
The amount of dirt a dump truck can hold depends on the size of the dump truck. The average tri axle dump truck can hold 12 cubic yards of dirt, and a quad axle can hold 14.
A dump truck with two (tandem) rear pulling axles supported by a third fixed axle located in the middle of the truck which only reaches the ground after a certain amount of load weight.
It varies from state to state, and will also be dependent on the tare weight of the truck. I can tell you that, in North Carolina, 13 to 15 tons is the norm for a tri-axle dump truck.
Need to know the specific model and configuration (e.g., single axle, tandem, tri-axle, quad axle, centipede) in order to answer this.
Varies by state. In North Carolina, a tri-axle is generally good for 15 - 17 tons, depending on the tare weight of the vehicle.