ABSTRACT
It is certain that it was in England where the Industrial Revolution began, it was in 1720 when Abraham Darby managed to get cast iron just smelting the iron with coke and thereby, the obtaining of the first cast iron in large masses. After leading several improvements in the casting and manufacture processes, laminated iron sheets were achieved in the mid-eighteenth century, that achievement will evolve over the following 50 years until the railroad rails appear in 1830, which are the precursors of the T beam in England and later the double-T beams in France, that will change the concept of architecture and structural engineering for the s.XIX.(H.,H.,S, 1976)
Although England was into this technology boom, France was the first country where it was clear from the beginning that the discovery of Abraham Darby would provide a real breakthrough. In fact, France realized that the possibility of a new resistant material given in large masses was the perfect chance to change the scale and therefore, it was tried in 1755 with a failed attempt to build a cast iron bridge over the Rhine River, twenty years before the English engineers managed to do it across the Severn River. This shows that France, with its constructive way of thinking and its rationalist thought, pioneered constructing a new concept of modern architecture.
