Material that is stockpiled in a continuous row is called a windrow. Motor Graders work with windrows, either moving them from side to side or spreading material from them. The new windrow that is formed from the material coming off the mouldboard should fall between the wheels of the motor grader or sometimes past the wheels of the motor grader. The motor grader should never run on the new windrow, as that will compact the windrow.
CAUTION: A motor grader tends to move the material in the direction of travel. It is recommended that the direction of working be reversed periodically to bring the material back to the original positions.