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Section through railway track and foundation showing the sub-grade. Grading in civil engineering and landscape architectural construction is the work of ensuring a level base, or one with a specified slope, [1] for a construction work such as a foundation, the base course for a road or a railway, or landscape and garden improvements, or surface drainage.
Grade indicator near Bellville, Western Cape, South Africa, showing 1:150 and 1:88 grades. Ruling gradients limit the load that a locomotive can haul, including the weight of the locomotive itself. Gradients are expressed as a ratio of vertical rise to horizontal distance; for example, a 1% gradient (1 in 100) means the track rises 1 vertical ...
A driveway (also called drive in UK English) [1] is a private road for local access to one or a small group of structures owned and maintained by an individual or group. Driveways rarely have traffic lights , but some may if they handle heavy traffic, especially those leading to commercial businesses or parks.
Contract grading is a form of grading which results from cooperation between an instructor and their student(s), and entails completion of a contracted number of assignments of specified quality that correspond to specific letter grades. These contracts often contain the following two characteristics: First, there are no finite amount of, say ...
In mathematics, a contraction mapping, or contraction or contractor, on a metric space (M, d) is a function f from M to itself, with the property that there is some real number < such that for all x and y in M,
Uniform Tire Quality Grading, commonly abbreviated as UTQG, is a set of standards for passenger car tires that measures a tire's treadwear, temperature resistance and traction. The UTQG was created by the National Highway Traffic Safety Administration in 1978, a branch of the United States Department of Transportation (DOT). [ 1 ]