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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.
Larger tools (or lawnmower attachments) are more often used for large areas of de-thatching or soil preparation. A concrete rake is a heavy-duty tool with a flat edge for spreading and smoothing wet concrete and a curved side for scooping. Made of durable materials, it is essential for leveling concrete surfaces in construction. [2]
In soil science, soil gradation is a classification of a coarse-grained soil that ranks the soil based on the different particle sizes contained in the soil. [1] Soil gradation is an important aspect of soil mechanics and geotechnical engineering because it is an indicator of other engineering properties such as compressibility , shear strength ...
Every plant requires a specific soil pH range within which it can best absorb essential nutrients. Because the optimal range is different for every plant, gardeners should learn the pH ...
As well as for agricultural purposes, rollers are used on cricket pitches and residential lawn areas. Flatter land makes subsequent weed control and harvesting easier, and rolling can help to reduce moisture loss from cultivated soil. On lawns, rolling levels the land for mowing and compacts the soil surface. Rollers may be weighted in ...
Fills can also be used to cover tree stumps, rocks, or unstable soil, in which case material with a higher bearing capacity is placed on top of the obstacle in order to carry the weight of the roadway or railway and reduce differential settlement.