The failure points were the same: walls and slabs not tied properly into columns -- that's a roof slab hanging off the building -- cantilevered structures, or structures that were asymmetric, that shook violently and came down, poor building materials, not enough concrete, not enough compression in the blocks, rebar that was smooth, rebar that was exposed to the weather and had rusted away.
Punctele de rupere erau la fel -- pereţi şi dale neconectate corespunzător la coloane -- aceasta este o dală din acoperiş care atârnă de pe clădire -- structuri cu grinde, sau structuri asimetrice, care au fost scuturate violent şi s-au prăbuşit, materiale de contrucţie proaste, beton insuficient, compresie insuficientă în blocuri, armături moi, armături expuse şi ruginite.