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Posted at 4:35 pm in News

The incapacity to make glasses of great dimensions were solved subdividing the squared leaves of window in smaller, able to be covered with a unique smaller glass piece. The present custom to subdivide the squared cloth of window in smaller is an aesthetic reminiscence that has lasted since then. In the use of the glass in facades, it is possible to pause in the chapter of the cathedrals, especially the gothic ones. These knew to as large as turn the problem the pieces into a virtue: " dibujando" with a lead frame different figures on the facade openings, and filling up the resulting hollows with tinted glasses, created magnificent show windows. Once overcome the problem to protect the hollow with glass, the limitations they had to the structural character of the facade.

The opening of a hollow forced to its piece superior, the threshold, to bear the burden of the building. This prevented to practice hollow too wide, reason why the openings took vertical forms as far as possible to increase the surface of illumination. Also it was necessary to prepare the hollows aligned upon others, so that the trasmisin of the load of the building by the rest of the wall was facilitated. As with the glass, and in spite of not being already necessary, this composition of facade with vertical and regular windows has survived to the present time like a cultural inheritance. In order to increase the size of the bay, in singular buildings the means arc was used later point and the pointed arc. Nevertheless, the first great advance in the facade took place in the gothic cathedrals, when the problem of the hollows was eliminated when undressing of structure function to the facade. The revolution consisted of the substitution of the traditional concept of wall of load by the one of precise pillars, turning aside the load of the cover by means of flying buttresses to outer abutments. Of that way the facade, released of the weight, could be closed now with great show windows. The arrival of the steel at the end of the XIX, and of the reinforced concrete at the beginning of the XX, definitively finished releasing to the facade of its structural dependency. architects of the Modern Movement explored the possibilities of a free facade, popularizing in excess window and the horizontal hollows instead of the traditional verticals, using them as much to adapt itself better to the vision of the people, like demonstrating their independence of the structure Facades for modern houses

Written by admin on January 9th, 2013

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