POST AND LINTEL CONTENT • What it is? • Evolution across the history • How does a post and lintel structure work ? • Materials • Conclusion POST AND LINTEL What is it ? A system in which two upright members, the posts, hold up the beams which are laid horizontally across their top surfaces. The exposed logs form a structural frame and the lintel must bear loads that rest on it as well as its own load without deforming or breaking. Two vertical posts on either side of a lintel hold up the beam and everything above the opening. This is a strong support when the structure is level and gravity pulls down evenly on the structure. The weight of the wall above the lintel is the load POST AND LINTEL Post It is a vertical support structure. The posts must support the lintel and its loads without crushing or buckling. Post material must be especially strong in compression Lintel A lintel is a horizontal structural component, supported at each end by a post. Lintels are commonly seen above windows and doors in older houses, supporting the bricks or stone above the opening. POST AND LINTEL EVOLUTION ACROSS THE HISTORY POST AND LINTEL Stone Age Basic post and lintel construction, but gigantic in size of construction members. The sides are vertical slabs of stone, capped with horizontals. Stonehenge POST AND LINTEL Sumerian Civilization. Post and lintel were use as the first structural system , the wall that the lintel supported was constructed with bricks. Sumerians were the ones that created the first building supported with a post and lintel and with brick walls. POST AND LINTEL Egiptians Karnak, Egipt POST AND LINTEL Greeks Post and lintel, it was the first way to support the roofs of temples and buildings. I consist on two posts supporting a lintel with nothing in between. Parthenon was the maximum width that the number of pillars could support without collapsing, or else they’d have to put more pillars inside. POST AND LINTEL Romans Romans brought the concept of post and lintels to a new level with the creation of the arch, which could support more weight than the structures of the Greeks and provided greater stability to their buildings. Also they introduce buttresses to the structure to hold up massive cathedral walls. POST AND LINTEL Moderns Uses Now the wall is an important complement of the post and lintel work, because it adds more support for the construction and also hides the post and lintel design within the framework. Also post and lintels are found in the construction of bridges, complex archways and pergolas. POST AND LINTEL How does this structure work? When post and lintel are use as the main structural system, we have to know that the horizontal member, the lintel is the one that supports the bigger load. It could be a practical decision the use of this system when we do not have big loads to support. Philip Johnson, Glass House For example The Glass House designed by Philip Johnson, with a very thin roof and small loads. Post and lintel were born since the beginning of Stone Age and they are an appropriate answer to solve small structural problems. POST AND LINTEL Materials Stone Concrete Metal Wood POST AND LINTEL CONCLUSION The post and lintel were not fundamentally altered until the production of iron columns, which were stronger and smaller, reducing the weight of buildings. Much modern construction in steel and concrete is based on the post-and-lintel system, restoring the formal simplicity of the oldest structures to modern architecture. POST AND LINTEL Bibliographic sources: Lacoma, T., Advantages of Post & Lintel Construction, available in http://www.ehow.com/about_5066026_advantages-post-lintelconstruction.html Payne, A., Art History Lesson 1 - Greek Art, available in http://www.compuhigh.com/demo/arthistles01.htm Wikipedia, Post and lintel, http://en.wikipedia.org/wiki/Post_and_lintel Kolossal'noy Istoriey Rima, El muro románico y los contrafuertes, available in http://kolossalnoy-istorieyrima.blogspot.com/2010/02/el-muro-romanico-y-loscontrafuertes.html available in