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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 ?
Adding and subsequently removing a grader would be disruptive.
This year, 39 percent of Texas fourth graders scored at or above proficient, compared to 37 percent of national fourth graders.
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).
In addition, 17% of 8th graders, 28% of 10th graders, and 40% of 12th graders reported that anabolic steroids were fairly easy or very easy to get, yet the lifetime use among youngsters is at its lowest since peaking in 2000 (currently 2% among students in all grades).
And while past-year abuse of OxyContin decreased significantly among 12th graders (from 5.
In fact, some third graders (25%) engaged in the aforementioned memory strategy twice within a given recall protocol [i.
The most common reasons they cited were fear of STDs (34% of ninth graders and 38% of 12th graders) and parental disapproval (36% and 33%, respectively).
Kindergarten children told mostly fantasy stories, first and second graders told mostly realistic fiction, and third graders told mostly personal narratives.
5% of 12th graders in the past year) and other illicit drugs including PCP, nonheroin narcotics, and methamphetamine.
Graders, who will be paid $15 an hour, must provide a minimum of three seven-hour days each week.
Berliner says Gallagher's assertion that 57 percent of American fourth-graders cannot read is "nonsense" and adds, "1 do not believe there is any data whatsoever that would say that 57 percent of fourth graders are unable to read.