(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.
We have more pictures of this and a step by step of what went wrong, if you are interested in seeing more please email us.
