All things dependent, you'd probably be looking at 13,000 to 16,000 lbs. If you need a precise empty weight, my suggestion would be to scale out empty at your nearest truck stop.
I own one with a 5 yard dump box on it. I weigh in at 11060lbs empty.
2,000 pounds
it weights 2330459556 lbs
13000
15000 lbs.
In the vicinity of 22,000 - 25,000 lbs.
The 1972 F600 with a 359 HD dump weighs 9980 lb (4527 kg).
Between 9000-10000 lbs. curb weight, # depending on std/crew cab, engine and wheel base. GVW rating usually at 26,000lbs. (thats truck, cargo,occupants)
Depends on what the truck and dump body is rated for.
The weight of a 1988 Kenworth dump truck can vary depending on its configuration and specifications, such as engine type and bed size. Generally, a typical Kenworth dump truck from that era can weigh between 20,000 to 40,000 pounds when empty. For precise weight, it’s best to refer to the specific model and any additional equipment it may have.
I found out how much my truck was by going to the dump, your recipt will have your before and after weight. A truck stop, Hwy weigh station or salvage yard also have scales and could give you an exact weight.
What type and configuration of dump truck? A single axle dump truck is going to be much shorter than a centipede, and you could be referring to any dump truck in between the two extremes, as well.