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History of Engineering

A long history of the engineering development from ancient Egyptian pyramids to the rise of computers

The history of engineering revolutions Part 4

No doubt steel is a material very good. But it has several drawbacks. First, the steel rusts; secondly melted. If the frame from the action of temperature begins to soften, and it is at this moment pushing a huge load of overlying floors, it is, of course, a direct path to the accident. There is a third drawback of steel is quite expensive.

The history of engineering revolutions Part 2

But perhaps the most common type of arch in our architecture is the dome arch, turned around its own vertical axis by 180 degrees. It's good to show the example of the Pantheon, which was held, probably the longest record in the history of mankind: the passage of a width of 43 meters nobody could beat for 1,300 years until, until it was built the Cathedral of Santa Maria del Fiore.

Roman roads Part 3

Of course, the routing and the creation of a framework for pavement engineering problems is not exhaustive. The construction of roads was in constant struggle with the terrain. Sometimes the road is raised on embankment, sometimes, on the contrary, had to cut through passages in the rocks. Rivers threw bridges, and in the mountains, if you had the opportunity, paving the tunnels.

Roman roads Part 2

Many Roman roads have survived to the present day, and this is the best evidence that their construction was approached thoroughly and with all due diligence. In other places the time didn't spare the creations of the ancient builders, but where once marched the legions of the paved modern highway.

These paths it is easy to find on the map highway, running along the route of the Roman, generally almost perfect straightness. Which is not surprising: any "hook" would lead to a serious loss of time for the Roman troops, moving mostly on foot.

Roman roads Part 1

It is hard to believe, but even in the twilight of antiquity, more than a thousand years ago, it was possible to travel from Rome to Athens or from Spain to Egypt, almost all the time remaining on the highway with a firm covering. For seven centuries the Romans have entangled the entire Mediterranean world the territories of the three parts of the world high quality road network with a total length of two of the earth's equator.