Wall

urfac A wall is a usually solid structure that defines and sometimes protects an area. Most commonly, a wall delineates a building and supports its superstructure, separate space in buildings into r ooms, or protects or delineates a space in the open air. There are three principal types of structural walls: building walls, exterior boundary walls and retaining walls. Building walls have one main purpose: to support roofs and ceilings. Boundary walls include privacy walls, boundary-marking walls on property, and city walls. Retaining walls are a special type of wall that may be either external to a building or part of a building that serves to provide a barrier to the movement of earth, stone or water. A wall may also separate apartment or hotel walls from each other. Each wall has two sides and breaking a wall on the other side. The two types of walls are load-bearing, which supports the weight of floors and roofs, and non-bearing wall, which at most supports its own weight. e.
 * WALL **