Dump Truck
Dump trucks are used for transporting many different loose materials, including sand, dirt, and gravel in the construction business. The usual dump truck has an open box with a hinged overhead tailgate, that when raised at the front (with hydraulics) the content fall out the back.

There are a number of unique configurations for dump trucks. Each one fulfills specific tasks in the construction process.

Standard dump truck
The dump truck that is a standard truck chassis, with the dump bed mounted onto its frame is the standard dump truck. A hydraulic ram lift is mounted under it towards the front of the truck, and lifts the back as needed for dumping.

Standard dump trucks have one or more rear axles and one front axle as well. Nearly all work with dual wheels on each side of each axle, except the front steering wheels. The most common are the six wheelers, and the ten wheeler versions.

Transfer dump truck
These are a standard dump truck that pulls a separate trailer which can also be loaded. They are known for the sound they make when they move their contents as it’s simple to distinguish. The extensions can be loaded with asphalt, sand, dirt, gravel, among other materials.

The extra container (B box) on the trailer is powered by an electric motor, and rolls off the trailer and into the primary dump box.  It’s greatest advantage is maximizing the cargo capacity without having to lose maneuverability.

Semi trailer end dump truck
Semi end dump truck is a tractor and trailer combination which contains the hydraulic hoist on the trailer. The most common semi end dump truck is a 3 axle tractor that pulls a 2 axle semi trailer. These load and unload rapidly.

Semi trailer bottom dump truck
The bottom dump truck is also a 3 axle tractor which pulls a 2 axle trailer, but has a clam shell like dump gate in the bottom of the trailer. Their biggest advantage is being able to dump material in a wind row. It’s also maneuverable in reverse too. Whereas double and triple dump trailers cannot.

Double and triple trailer
Doubles and triples bottom dump trucks consist of a 2 axle tractor pulling a semi axle trailer that has additional trailers. These types of dump trucks allow the driver to spread in wind rows without leaving the cab or stop. They can’t go in reverse though.

Side dump trucks
Side dumpers amount to 3 axle trailers pulling a 2 axle semi-trailer. It has hydraulic rams that tilt the dump body onto the side. This spills the contents to the left or right of the whole combination. They carry more weight than the rest of the dump trucks.

Another advantage is that they are much harder to tip over while dumping. Many of the others are much more prone to this. Though the length of these dump trucks impedes their movement and limits them.

Off road dump trucks
Trucks that are meant for off-road resemble heavy construction equipment more than they do highway dumpers. Their uses include heavy dirt hauling, coal transportation, and many other uses related to excavation. They are very large, and excellent for those times when roads need to be dug out in large quantity and hauled off elsewhere.
 
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