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The solution lay in three key architectural innovations that formed the secret of Rome’s great monuments. The most important, is the arch.

The arch is an almost perfect design for bearing heavy loads. And that design is so simple. A series of wedge-shape blocks is assembled together in a semi-circular forum, and supported on top of two pillars at the side. The weight of the building is absorbed by the key stone in the centre of the arch, and distributed evenly over the entire span of the arch and then down into these two-side pillars. This allows the pillars to bear enormous loads. And because the space in between the pillars is empty, this reduces the weight of the building even further.

The arch would become a reoccurring theme throughout the building of the Colosseum. On the outer ring, 80 gigantic arches, 23 feet high, form a giant ring around the groomer. On top of this, is seven other 80 arches, on top of these, is a third tier, making 240 arches in all. The Colosseum really is nothing but arches; it’s a symphony of arches.

The organization required to achieve this feat of engineering was phenomenal. But even here, Rome’s engineers had a tricker too of their tilters. For them, building was a business of mass production.

Standardization is key for the efficient building of the Colosseum. For example, the Romans used the arch, and the arch’s repeated again and again and again, by countless teams of builders and that kind of standardization is very keen to what we have in an industrialized world today.

So the breaking-down of the building allows them to have lots of work goings with not huge skills. They just had to simply build the arch.

In this way, the thousands of laborers working on the Colosseum could be left to build their section with minimal supervision, confident in the knowledge that their labors were being repeated all over the structure.

You are gonna have a lot of unskilled laborers, you are gonna have a lot of bricklayers, you are gonna have a lot of people that have some sort of skill, but they are not gonna be required no more than a helot. Then you are gonna have a lot of skilled laborers, people that are gonna be carving the columns, people that are gonna be carving the statues that are gonna go in the niches of the Acropolis, so you are gonna have a lot of skilled craftsman, you are gonna have a lot of unskilled people participating in this very massive and important construction site.

Just making sure that each working was in the right place of the right time, and doing the right thing, was a challenge itself.

谢谢楼主哈.............

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