Graders are commonly used in the construction and maintenance of dirt roads and gravel roads. In the construction of paved roads, they are used to prepare the base course to create a wide flat surface upon which to place the road surface. Graders are also used to set native soil or gravel foundation pads to finish grade prior to the construction of large buildings. Graders can produce inclined surfaces, to give cant (camber or side slope) to roads. In some countries they are used to produce drainage ditches with shallow V-shaped cross-sections on either side of highways.