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更新日期：2013-02-14
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Retaining walls are structures designed to restrain soil to unnatural slopes. They are used to bound soils between two different elevations often in areas of terrain possessing undesirable slopes or in areas where the landscape needs to be shaped severely and engineered for more specific purposes like hillside farming or roadway overpasses.
A retaining wall is a structure designed and constructed to resist the lateral pressure of soil when there is a desired change in ground elevation that exceeds the angle of repose of the soil.
When building a retaining wall, you need to estimate the number of stone blocks, capstones, and cubic yards of gravel needed to complete the project. Getting an accurate landscaping estimate will help you plan for the cost of materials and labor to build a retaining wall.