Sunday, 7 February 2010

Bridges have KEYS to standing up =O

This was a weird but interesting fining, I knew realised how important this bit of "ancient" design was. THE KEY TO A BRIDGE! Is the middle block =O

As explained on the website i found...


The keystone is the most important stone in an arch bridge, without this stone the arch would collapse. The keystone holds the arch together.

Heres the link I found this useful bit of information from^^

Anddd it has examples of bridges in europe =O Big difference to the stone bridges in asia no?

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