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The discipline, art, skill and profession of applying scientific knowledge and principles to the design and manufacturing of machines, structures, devices, systems, materials and processes.

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Engineering; Civil engineering

An excavating machine or digger consisting of a digging bucket on the end of a two-part articulated arm chiefly used for trenching and pit-like excavations. Also called a rear ...

asphaltic concrete paving

Engineering; Civil engineering

Commonly called asphalt paving or beck-top, it is a construction method by which the mixture of asphalt and aggregate (sand and crushed rock or gravel) is spread while hot onto a ...

asphalt batch plant

Engineering; Civil engineering

A central mixing and manufacturing plant for preparing asphaltic concrete paving for delivery to job sites. At the plant, drying, screening, storing, and mixing operations are ...


Engineering; Civil engineering

A means of providing light, ventilation, or access to a basement or cellar by an earth-retaining, pit-like recess, out and around a below-ground window or doorway.

arrested crushing

Engineering; Civil engineering

Rock crushing in gyratory or jaw crushers in which rocks are crushed by the equipment jaws instead of breaking each other in a choked crushing. In arrest crushing, the machine's ...

autogeneous healing

Engineering; Civil engineering

The natural closing and disappearance of cracks that can occur in concrete with the presence of moisture, and the absence of tensile stress. The repair is by a combination of ...

sprinkler irrigation

Engineering; Civil engineering

A method of irrigation in which the water is sprayed, or sprinkled, through the air to the ground surface.