https://padlet.com/jmcdan8045/3nuvcy67qi44 the history of arched bridges en-us 2016-02-02 23:32:22 UTC 2023-03-21 16:29:39 UTC hello@padlet.com https://padlet-assets.storage.googleapis.com/portrait/earth.jpg jmcdan8045 https://padlet.com/jmcdan8045/3nuvcy67qi44/wish/92772275 http://www.britannica.com/technology/arch-architecture
http://www.ancient.eu/Roman_Architecture/]]> 2016-02-02 23:27:11 UTC https://padlet.com/jmcdan8045/3nuvcy67qi44/wish/92772275 jmcdan8045 https://padlet.com/jmcdan8045/3nuvcy67qi44/wish/92772276
     the arch was invented by the Romans and lasted over 2815 years and was invented in 800 BC. this was a great step forward for the Romans by creating over more efficiency for the active Roman cites. ]]> 2016-02-02 23:17:45 UTC https://padlet.com/jmcdan8045/3nuvcy67qi44/wish/92772276 jmcdan8045 https://padlet.com/jmcdan8045/3nuvcy67qi44/wish/92772277
   
   New arched bridges are now typically made  of steel with gaps between each beam. The new arched bridges are now made to let people pass and let large boats pass and are now much larger and stronger than before. these bridges have much larger and less arches. the arched bridge is great  for natural landscapes by letting water flow under with no distributions, and the bridge takes much less space.

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       Ancient roman arched bridges were mad of clay bricks and concert. These bridges were designed to let people cross but still let small boats pass under. the arch was  made by stacking stones and then build scaffolding to lay the other stones that are above the river and lastly they place a KEYSTONE on the top to finish the arch. The arch helps a bridge by distrusting the load above the river to the solid concrete blocks placed in the river.

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