Trucks, loaders, rollers

A dump truck (UK dumper truck) is a truck used for transporting material (such as sand, gravel or dirt) for construction. A typical dump truck is equipped with an open-box bed, which has hydraulic pistons to lift the front, allowing the material in the bed to be dumped on the ground behind the truck at the site of delivery.

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A transfer dump is a standard dump truck which pulls a separate trailer which can also be loaded with gravel, sand, asphalt, etc. The second aggregate container, on the trailer, is powered by either an electric, pneumatic motor or hydraulic line. Transfer dumps are typically seen in the western United States because of the peculiar weight restrictions on western highways.

Off-highway dump trucks are heavy construction equipment. Bigger off-highway dump trucks are used strictly off-road for mining. There are two primary forms: rigid frame and articulating frame.

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An articulated dumper is an all-wheel drive, off-road dump truck. Together with all-wheel drive and low center of gravity, it is highly adaptable to rough terrain. Major manufacturers include Volvo CE, Terex, John Deere and Caterpillar.

Water trucks are used for compaction and dust control.

A loader is a machine often used in construction, primarily used to load material (dirt, snow, gravel, logs, etc.) into or onto another type of machine, such as a dump truck.

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A tracked loader is an engineering vehicle consisting of a tracked chassis with a loader for digging and loading material. The ability of a track loader to perform almost every task on a site is why it remains a part of many companies’ fleets.

Vibratory roller is used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. It is widely used to compress the surface being rolled to ensure a smooth, even surface. Vibratory rollers are widely used for compacting asphalt pavements because they achieve the required densities faster.

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Pneumatic tire rollers are used on small to medium size compaction jobs, primarily on granular base materials. One advantage that pneumatic compactors have is that there is little bridging effect between the tires. Therefore, they seek out soft spots which may exist in the fill. Another advantage is that pneumatic rollers can be used on both soil and asphalt so a road building contractor can save by having one compactor for both stages of construction – base and asphalt.

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