Wall

Walls are solid structures that define and protect an area and not only these but they’re usually the main support of the building. Also, walls delimit the interior and exterior spaces of a construction. There are three principal kinds of walls:


 * Buildings walls:** they support floor and ceilings
 * Boundary walls**: they’re privacy walls, boundary-marking walls and city walls
 * Retaining walls:** they can be external or be part of the building. They provide a protection against some natural elements like water or stone

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