Kate Playground Zip Threads

tunnels and bridges error

This the Lefortovo tunnel in Moscow, Europe's longest city tunnel, 3150 m !
He is leaking in some places and the overlying flow penetrates in some places.
At temperatures below 0 ° then the following happens - and this video is supposed to record a single day ......

Avalon music, artist Juliet.



And this new bridge over the Volga is designed earthquake-resistant construction:



But sometimes works is not so good, the Tacoma Narrow Bridge in the U.S. , 4 months after its completion, it sank in the waters of Puget Sound.



And now she is!

Quote:

The event changed forever how engineers design suspension bridges. Gertie's failure led to the safer suspension spans we use today.

That was 1940, that does not mean that you are not even today can repeat old mistakes, the time it was thought to have solved, right?