In construction and engineering: How does a ';Base Isolation'; foundation work?

NO, no, no, no, no.





Base isolation - the base slides as the ground moves underneath it, reducing the forces and acceleration transmitted to the building, letting the whole building ';skate'; as the earth slides back and forth beneath it.





http://nisee.berkeley.edu/lessons/kelly.鈥?/a>In construction and engineering: How does a ';Base Isolation'; foundation work?
Foundation achorage keeps a structure and its base moving as a unit when the ground begins to quake.


Base isolation allows a structure's foundation and the ground to move as one, minimizing the forces on the building itself.


Pile foundations reach down through unstable soil to the bedrock beneath for added stability.





EDIT:


No wonder! We've been using an outdated book! It's the older edition! The new edition explains it MORE accurately!