What is a retaining wall, and how is it used in building design?

A retaining wall is a structure that is designed to hold back soil, rock, or other materials from a building or structure. It is used in building design as a means to create level areas or to prevent erosion and landslides. Retaining walls can be made of various materials, including concrete, stone, brick, wood, and even recycled materials. They vary in size and shape depending on the purpose, and they can be designed to blend in with the surrounding landscape or stand out as an architectural feature. Some common uses of retaining walls include creating terraced gardens, supporting roadways, and protecting buildings from water damage in areas with high rainfall or prone to flooding.

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