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(mechanical engineering)
A high-bodied, wheeled vehicle with a leveling blade mounted between the front and rear wheels; used for fine-grading relatively loose and level earth.



a trailer-type earth-leveling machine that, through activation of its power source, cuts banks and shifts and levels ground, snow, and loose construction materials. Graders are used in agriculture and for construction and maintenance of roads and airports. A grader has a blade with a cutting edge mounted to its frame. This blade is easily lifted, lowered, and turned in both horizontal and vertical planes. Grader machines built in the USSR have blade lengths of 2.5 to 4.5 m and a productivity of 45 cu m/hr. Self-propelled graders are in especially wide use because of their greater productivity and maneuverability.


grader, towed grader

A multipurpose machine used for leveling and crowning, mixing and spreading, ditching and bank sloping, and side casting material, or for light stripping operations; not intended for heavy excavation.
References in periodicals archive ?
The RCC currently has 80 graders and the nine will replace some of the worn out graders and will be used for gravel roads maintainance.
It found that the annual prevalence of illicit drug abuse was 13% among 8th graders (down from 22% in 1997), 28% among 10th graders (down from 39% in 1997), and 37% among 12th graders (down from 42% in 1997).
For example, use of cigarettes in the past 30 days as reported in 2007 was 7% among 8th graders (compared with a peak of 21% in 1996); 14% among 10th graders (compared with a peak of 30% in 1996), and 22% among 12th graders (compared with a peak of 37% in 1997).
Alcohol use remained nearly stable among 8th and 10th graders as well, with nonsignificant decreases in the lifetime and past-year measures and nonsignificant increases in the past-month assessment.
B1(E)-B2(G)-P2 (E)-P1(G)], illustrating stronger L1-L2 relations and L1-L2 mobility, compared to first graders.
After reading about panning for gold in Chang's Paper Pony by Eleanor Coerr, second and third graders visited the Consolidated Gold Mine in Dahlonega, Georgia, site of America's first gold rush, and panned for gold.
In one set of analyses, they compared the abstinence reasons between sexually inexperienced females and males, and between 12th graders and ninth graders; in a second set, the same comparisons were examined among sexually experienced students.
After the lumber passes through the MSR machine, it is transferred to another set of chains that transport it past the graders.
Kindergarten children based their stories on previously heard material, first graders based theirs on familiar surroundings, second graders based their inventions on their imagination, and third graders tended to base their stories on personal experiences.
fourth graders above the international average in math and science; eighth graders were above average in science and a little below in math.
We look forward to working with them on 5th Grader games for social media and mobile platforms," said Mark Burnett.
6%) in the use of prescription sedatives among 12th graders, which marks the end of a long, gradual increase over the past 12 years (from 2.