대략 기사는 https://www.miamiherald.com/news/local/community/miami-dade/miami-beach/article252394008.html


요약하면, 이 아파트가 Flat Slab 공법 (무량판 공법)으로 지었다는 소리야. 그런 공법은 기둥이 콘크리트 상판을 뚫고 나오는 "펀칭"현상이 나면, 한번에 와르르 무너질 수 있다고..


무량판 공법에서 펀칭 현상으로 한 방에 무너진 건물이면, 딱 생각나는데가 삼풍이쟎아. 


무량판 공법으로 지어진 건물들 목록 같은것 어디 없나 궁금함.. 


Structural plans from 1979 show that the Champlain Towers South Condo was built using a “flat slab” style of construction in which concrete slabs reinforced by steel rebar sit directly on top of support columns — a common method of construction for everything from parking garages to apartment buildings, experts said.

Over time, the rebar in the concrete can become corroded and crack the slab and joints, potentially weakening the structure. If one part of the structure collapses due to corrosion, it could cause a larger catastrophe.

“When you have one structural failure in one column or beam, it’s a domino effect,” said Charles Danger, retired building chief for Miami-Dade County.

A concrete slab that’s damaged by corrosion can be prone to a type of failure called “punching,” in which the column punctures the slab and weakens the overall structure, said Abieyuwa Aghayere, a professor of forensic engineering at Drexel University. He said that could be one explanation for the building’s sudden collapse.