Wall+--+Post+and+Lintel

 **__Wall__** A wall is a solid, vertical structure that protects or defines an area. Walls are used in construction and they are the most important structural system. The can be made of brick, stone, concrete, wood or bamboo. The wall is the principal element in construction.  Types of walls: structural wall, tightened wall, armed land walls, load-bearing wall, non bearing wall.

**__Post and lintel__** This is the most basic and simple construction technique. In the ancient times it was used in houses, temples, entrances and openings. Through time, the technique grew and we made more complex buildings. In succession post and lintel is capable of hold greater weights. Post and lintels are still used (but we oftenly found them like beams and columns). The materials used for making post and lintels in the ancient times were stone and wood. Nowadays, we can make them from steel, aluminum or even plastic.