Hand Trucks

Hand trucks are typically found on construction sites as a means of transporting heavy loads. They also feature smooth, flat surfaces to easily roll over obstacles such as gravel driveways and thresholds.
Dollies can be used for moving large items from one floor of a building to another, but the nature of those surfaces is too varied for a dolly to work well across them all.

The word hand truck comes from the 19th-century tradition of carrying loads on a human's hands, with a sack truck being a type of hand truck. The word implies that they can be pushed by one person, with the verb 'push' coming from the old French "pousser."

An early derivation of this meaning was "to load one's hands" as opposed to using both arms to lift things. In time, this term became generalized as "hand carriage" and shortened simply to hand-cart or hand-truck. In some countries, it is called a dolly or trolley instead of a truck.