check your vehicle GVW usually listed on the door sticker. Then subtract the weight of your truck with an empty flat bed. the remainder will be what you can haul.
It depends on the brand/cab configuration/drivetrain, but An example: Isuzucv.com 14,500gvw reg cab diesel, Body+payload = 8378-8564lbs.
As much as it wants
Legally, in the US, it's typically between 43,000 and 48,000 lbs of payload. The max legal interstate weight is 80,000 lbs. for the truck, trailer, and payload. How much the actual payload comes out to depends on the empty weight of the vehicle and trailer, and that'll be affected by a number of factors, such as the frame length of the truck, what the trailer is made of (steel or aluminum), etc.
Legally, about 140 - 150% of its tare weight. Most could haul significantly more if need be.
For interstate travel in the US without requiring oversize permits, the gross weight is 80,000 lbs. What that translates to in cargo weight depends on the vehicle's tare (empty) weight. Typically, a truck with a flatbed trailer will be good for 45,000 - 48,000 lbs., and a truck pulling a dry box can typically haul 43,000 - 45,000 lbs. of freight.
10,000
Gross 52,000 lbs
Subtract the actual weight of the truck from 26,000 lbs (GVWR) to get the weight you can haul. This is assuming you are talking about a single straight truck with no trailer. It would be best to actually weigh the vehicle with full fuel tanks to get the most accurate measurement. You can get a weight at most places that sell gravel, stones, etc.
How much a tow truck can tow depends on the kind of tow truck or tow truck chassis is used. A few examples of types of tow trucks are boom, hook and chain, wheel lift, flatbed, and integrated.
ABOUT 23,000 LBS ABOUT 23,000 LBS
Need more info, are you building a flatbed for a truck, out of wood or steel, or a flatbed trailer, are you building it yourself, are you paying someone to build it for you?
The volume that a dump truck can hold depends on the size of the truck. You could say that there is no 'typical' dump truck. The horsepower, the axle weight, and the size of the box are a few of the features that determine how much the truck can hold and haul.