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I can’t sit still….I got the hippy hippy shakes!.

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Presentation on theme: "I can’t sit still….I got the hippy hippy shakes!."— Presentation transcript:

1 I can’t sit still….I got the hippy hippy shakes!

2  Earthquakes are damaging!

3  Engineers have been designing materials and structures that can better withstand earthquakes!  They put their designs to the test on shake tables.

4  There are several rules that we use when building our cities and homes to withstand earthquakes.  A lot of this research is done where earthquakes are common.  Japan  California

5  Putting weight near the bottom of a tall object makes it harder to push over!

6  BUOYS!!!

7  Mass at the bottom is the best way to ensure a strong foundation!

8  Deep foundations and pilings anchor the buildings to the ground!

9 …maybe a little too much

10  If a building cannot sway slightly, it may snap like a brittle twig.  Swaying allows the building to ABSORB energy!  Concrete crumbles…  Steel is the best thing for this!  Swaying buildings in Japan! Swaying buildings in Japan!

11  http://www.youtube.com/wa tch?v=o1mPXOi5thk&noredi rect=1 http://www.youtube.com/wa tch?v=o1mPXOi5thk&noredi rect=1  What is the strongest structural shape??  TRIANGLES

12  How it works! How it works!

13  It works in a bridge too!? It works in a bridge too!?  Model without damper Model without damper  Model with damper! Model with damper!  Taipei 101 (the tallest building in the world)

14  Action during an earthquake! Action during an earthquake!

15  Museum shake table http://www.youtube.com/watch?feature=pla yer_detailpage&v=FTb9Mbx0DwQ http://www.youtube.com/watch?feature=pla yer_detailpage&v=FTb9Mbx0DwQ  Elastic Bearing  http://www.youtube.com/watch?v=phgdkqn9 aTI (1 min) http://www.youtube.com/watch?v=phgdkqn9 aTI


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