The stairs are one of the oldest buildings in architectural history, they have always played a central role in the history of humanity, although it is difficult to tell exactly in wich year they were born, it is believed his appearance was by the year 6000 before Christ. The stairs seems to change shape with the change of architectural eras, reflecting the trends used in different ages and revealing the talent of those who designed them.
The first stairs in the history were wood trunks fitter together, these kind of stairs were used to acquire strategic positions for survival. In a basic sense, the first use which was given to the stairs was to overcome the difficulties presented by the terrain, such as valleys or mountains, the goal was to be able to pass these difficulties as soon as possible, move up often meant moving to a place of greater security, then this could have meant at that time the difference between life and death, it was very important to move quickly, hence the importance of the stairs.
In the history of the stairs they first emerged as a solution to a problem, although, years later it was found in China the first granite staircase leading to the sacred mountain in Tai Shan, this indicates that one of the utilities that was given to the stairs in his story was for religious purposes. Confucius in one of his stories said to have gone up this ladder to the top in the year 55 BC. The ladder was used in a metaphoric way reach the divine height and establish a connection between earth and sky. Other examples of stairs built for religious purposes are: the biblical Jacob's ladder, the tower of Babel, which was a helical tower, the pyramids of Egypt that had stairs, the celestial ladder of Shantung in China, the stairs in India, a peculiarity of the stairs in India is that they had also scientific utility. All these stairs have something in common, they symbolize the rise of the light, the sun, and a way in to the gods path.
Later in the history of stairs, spiral stairs wede used in clastles for military reasons, the proliferation of spiral stairs in castles was not casual, they allow a strategic position to the soldier who defended the castle, these spiral staircases and railings were built in order to make the solder placed in top an advantage, this soldier would have his right hand full of space to move his sword, while the woldier placed on the bottom would constantly hit the wall whily fighting, because he would have blocked part of the range of motion of his right, besides, his head would be easy to reach for his opponent, the lack of handrails was not casual, the aim was to push the opponent over the edge of the stair.
The end of the nineteenth century is regarded by many as the golden era of construction of stairs, Peter Nicholson developed a mathematical system for stairs and railings approaching the art of the stairs to the workers of wood and metal. By the end of 1980 Eva Jiricna in London started designing stairs in glass and stainless steel which gave the stairs a sleek and futuristic look.
Today it is increasingly common to exit the conventional design of iron and wood and move on to different materials such as stainless steel, glass and titanium.
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