Retailing walls are keeping safe all that is build after a great slop that terrain has. They are strong barrier that keeps the soil on the other side and useful area at the opposite side of the wall. But, to do this, the retailing wall needs to be build deep from the ground to the safe height above the sloppy ground. So, the constructor workers add several layers in the construction to make sure the wall will be strong enough. The images bellow contains schemes showing the elements, layers of needed materials that makes the retailing wall functional enough.

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