1. English to Architects and Urban Planners II (ID-2125) Teacher: Magaly Rodriguez Students: Laura Mariño Rostyn Rivero

2. Content  Introduction  What is a wall? (Definition)  Types of walls by function  Types of walls by materials  What is a defensive wall? (Definition)  Walls in history.  Conclusion

3. Introduction What is the difference? Wall Defensive wall Let’s find out!

4. Wall A wall is a solid structure that defines and protects an area. Commonly, a wall delineates a building and supports its structure, separates space in buildings into rooms, or protects or delineates a space in the open air.

5. Types of walls  Function: Building wallsBoundary wallsSeparation wallsRetaining wallsShared wallsPortable wallsStuctural walls

6. Types of walls  Materials: Adobe wallsStone wallsMasonry wallsConcrete wallsBrick walls

7. Defensive walls A defensive wall is a fortification used to defend a city or settlement from potential aggressors. In ancient to modern times, they were used to enclose settlements

8. Walls in history The practice of building massive walls having its origins in prehistory. It was refined into the medieval period and beyond in certain parts of Europe.

9. Conclusion A wall is a solid structure that defines and protects an area. A defensive wall is a fortification used to defend a city or settlement from potential aggressors. The difference between a wall and a defensive wall is that a wall can be create in interior or exterior spaces, it delineates spaces, separates space into rooms or support structures. A defensive wall is constructed in exterior spaces to defend the habitants from external aggressors or like separation barrier and It is more thickness and longer.

10. Sources  http://www.arqhys.com/construccion/paredes- construccion.html  http://en.wikipedia.org/wiki/Wall  http://en.wikipedia.org/wiki/Separation_barrier  http://www.buildwisely.com/interior-wall-materials.html  http://en.wikipedia.org/wiki/Defensive_wall