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2. Grading (earthworks) - Wikipedia

   en.wikipedia.org/wiki/Grading_(earthworks)

   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.

3. Ultisol - Wikipedia

   en.wikipedia.org/wiki/Ultisol

   Map of the United States showing what percentage of the soil in a given area is classified as an Ultisol-type soil. The great majority of the land area classified in the highest category (75%-or-greater Ultisol) lies in the South and overlays with the Piedmont Plateau, which runs as a diagonal line through the South from southeast (in Alabama) to northwest (up into parts of Maryland).

4. Pine Level, Montgomery County, Alabama - Wikipedia

   en.wikipedia.org/wiki/Pine_Level,_Montgomery...

   Pine Level, also known as Pine Tucky, is an unincorporated community in Montgomery County, Alabama, United States. Pine Level is located along U.S. Route 231 (also known as Alabama State Route 53 ), 25 miles (40 km) southeast of Montgomery .

5. Irrigation - Wikipedia

   en.wikipedia.org/wiki/Irrigation

   Irrigation of agricultural fields in Andalusia, Spain.Irrigation canal on the left. Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns.

6. Soil classification - Wikipedia

   en.wikipedia.org/wiki/Soil_classification

   Soil texture triangle showing the USDA classification system based on grain size Map of global soil regions from the USDA. For soil resources, experience has shown that a natural system approach to classification, i.e. grouping soils by their intrinsic property (soil morphology), behaviour, or genesis, results in classes that can be interpreted for many diverse uses.

7. Water table - Wikipedia

   en.wikipedia.org/wiki/Water_table

   When excavation occurs near enough to the water table to reach its capillary action, groundwater must be removed during construction. This is conspicuous in Berlin , which is built on sandy, marshy ground, and the water table is generally 2 meters below the surface.