20090729

Fallen in Shanghai

If you saw this building, that had "fallen over"...perhaps you've wondered why. Most of you are clever enough to know it had to do with the foundation, but for a more precise answer, here you are...





[For those of you that speak English...
(1) An underground garage was being dug on the south side, to a depth of 4.6 meters
(2) The excavated dirt was being piled up on the north side, to a height of 10 meters
(3) The building experienced uneven lateral pressure from south and north
(4) This resulted in a lateral pressure of 3,000 tonnes, which was greater than what the pilings could tolerate. Thus the building toppled over in the southerly direction.]

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