샌프란시스코 고급콘도 침하 논란 VIDEO: SF TOWER SINKING AND TILTING TOWARD THE STREET

VIDEO: SF TOWER SINKING AND TILTING TOWARD THE STREET

Luxe condo highrise built on sand has sunk 16 inches and is leaning two inches northwest

샌프란시스코 밀레니엄타워 source .neogaf.com

  샌프란시스코의 럭셔리 콘도인 밀레니엄타워가 약 40cm가 가라 앉고 5cm가 동서방향으로 기울어졌다.

58층의 이 밀레니엄타워는 샌프란시스코 301 미션스트리트에 있는 고급 콘도로 한채에 1천만불을 홋가하고 있다.

왜 가라 앉았나? 지진 때문에?

이 건물은 진흙 지반에 두꺼운 콘크리트 슬래브로 시공되어 있다으며 기초파일은 암반층인 36m가 채 안되는 조립모래지반까지 24m가 설치됐다.

하지만 건설업자들은 보통 건물은 수명이 다할 때까지 이 정도까지 침하된다며 안전에는 문제가 없다고 주장하고 있다.

황기철  콘페이퍼 에디터

ki chul, hwang conpaper editor 

VIDEO

http://www.constructionequipment.com/video-sf-tower-sinking-and-tilting-toward-street

edited by kcontents 

August 02, 2016

Residents of San Francisco's Millennium Tower are none too pleased with the direction their building has taken in the past 8 years.

The luxury 58-story highrise at 301 Mission Street, featuring condos priced up to $10 million, is not built on bedrock and instead sits on a thick concrete slab atop an area of mud fill. Pilings extend 80 feet into dense sand - about 120 feet shy of the bedrock layer.

Quick question: They get earthquakes out there, right?

The builder expected some settling, estimating the tower would sink maybe 6 inches over its lifetime.

P.J. Johnston, spokesman for Millennium Partners and principal owner Sean Jeffries, said a 2014 independent safety review “determined the settlement has not significantly affected the seismic performance of the building, and does not represent a safety risk.”

Greg Deirlein, director of Standford's Earthquake Engineering department says the sinking situation is a significant concern.

Who is to blame depends on who is asked. Parties that could be held legally accountable for the building's shifting could include the Transbay Join Power Authority, Caltrans, Caltrain and AC Transit. That's because all of those operations pushed heavily for the completion of the tower as an anchor for the beleaguered Transbay Transit Center, with the TJPA alone pumping $58 million into an underground support system for the tower before it even broke ground in 2010.

Residents are being advised not to rush to sell their units, being told the problem will be fixed

http://www.constructionequipment.com/video-sf-tower-sinking-and-tilting-toward-street

kcontents