The Run

The inability to manufacture glasses of large dimensions was resolved subdividing window leaves into squares more small, able to be covered with a single piece of glass smaller. The usual current of subdividing window cloths into smaller squares is aesthetic reminiscent that has survived since then. The use of glass in facades, it is worth stopping at the chapter of especially the Gothic cathedrals. They knew how to turn the problem of the size of the pieces into a virtue: drawing different figures on the openings of facade with a lead frame, and filling the resulting holes with tinted glasses, created magnificent stained glass Windows. Once overcome the problem of protecting the hole with glass, the limitations due to the structural character of the facade. A hollow opening forced her bodice, the lintel, to support the load of the building. This prevented practice holes too wide, so the openings adopted vertical forms to increase the surface of lighting where possible. It was also you have aligned holes some on top of others, in a way that will facilitate transmission of the load of the building for the rest of the wall.

Just as with glass, and despite no longer be necessary, this facade with vertical and regular Windows composition has survived until our days as a cultural heritage. Arch was used to increase the size of the vain, in singular buildings of half a point and then the pointed arch. However, the first breakthrough in the facade came in Gothic cathedrals, when removed the problem of gaps by stripping of structural function to the facade. The revolution consisted of the replacement of the traditional concept of load-bearing wall by the of pillar point, deflecting the burden of the deck by flying buttresses to exterior buttresses. Thus the facade, liberated from the weight, could close now with large stained glass Windows. The arrival of steel at the end of the 19th, and the reinforced concrete in the early 20th, definitely ended up freeing the facade of their structural dependence. The architects of the modern movement explored the possibilities of a free facade, popularizing the run window and horizontal holes rather than the traditional vertical, using them both for best suit the vision of people, as to demonstrate its independence from the facade structure for modern homes

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