See the related link to "Bridge Formula Weights Calculator". Although a set of tandem axles is allowed 34,000 lbs. on the Interstate, this is reduced when you get below a bridge length of 35 feet between the trailer and drive axles.
If you don't want to measure out your distances between axles, at a minimum, you need to tag it for 67,000 GCWR.
To move large quantities of goods in a single trip.
Straight truck is a single vehicle; i.e., there isn't a trailer in tow.
Your tractor drive tandems could weigh in at 34,000 lbs, but you could only have 20,000 lbs. on the single axle of the trailer.
The weight a single axle tractor with a 48-foot trailer can pull typically ranges from 20,000 to 34,000 pounds, depending on the specific tractor model, trailer design, and load distribution. However, regulations often limit the total combined weight of the tractor and trailer to around 80,000 pounds in the U.S., including cargo. It's important to check local regulations and the manufacturer's specifications for precise limits.
Depends on the truck's specs. A US beverage distribution truck hauling a single axle trailer would be permitted between 54,000 and 56,000 lbs gross weight, whereas single axle tractors pulling tridem trailers in Europe and permitted a gross weight of 44 metric tons (about 97,000 lbs.)
What type of truck and trailer? For all I know, you could be talking about a Ford F650 and a single axle utility trailer. If you're referring to Class 8 vehicles, something like a single axle tractor towing a single axle trailer would be allowed an interstate GVW of 52,000 lbs.
25,000 - 40,000 lbs. or more, depending on specifics. When you say "tractor-trailer", you're citing an all-inclusive category which would include everything from a single axle tractor pulling a 28' single axle trailer up to heavy haul units of over 20 axles... I've personally run combinations which have weighed in excess of 250,000 lbs. empty.
A tandem truck usually refers to the amount of axles on the trailer or tractor. A single drive axle on a tractor would be referred to as a single, or the same for one axle on the trailer. I have seen it referred to the amount of tires on the end of an axle. When there are two tires on the end of the axle, that would be referred to as a dual, not a tandem.
Mini trucking? That's a new one on me. You might be thinking of what's referred to as "hotshot" trucking, which is a single axle trucking pulling a multi-axle trailer. This can be anything from a one ton pickup pulling a gooseneck trailer up to a single axle tractor-trailer power unit pulling a semi trailer.
3 psi/minute single vehicle, 4 psi/minute combination vehicle.
Whatever it weighs. You could be talking about a tractor-trailer unit, or a single vehicle, either of which in a number of configurations, and corresponding weights.
Not without a permit, and, to be able to do that, it must be a single piece load.