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Bedrock is important because it is just that, rock. The term bedrock is used to descibe any type of solid rock that lies beneath the loose topsoil. It is important because bedrock is what allows buildings to have solid foundations. Bedrock is particularly important to big buildings since the topsoil often cannot support the weight of the building and unless the foundation are dug down to bedrock the building would actually sink in the ground. In some areas, such southern Louisiana, the bedrock is so deep that it cannot be reached, in these cases the buildings rely on what are called friction pillings. Friction pillings are long poles or columns that are driven so deep into the ground that although they're not resting on bedrock the force of friction from the surrounding dirt prevents them from moving. I believe this is the technique that was used to build the new football stadiumin New Orleans.

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19y ago

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