旧金山豪区Marina district JohnChan 发表于 2022-10-17 20:11
基本上填出来的土地都是liquefaction zone https://www.kqed.org/news/11799297/large-parts-of-the-bay-area-are-built-on-fill-why-and-where When Nicole was growing up, her grandmother always told her: Don't live anywhere built on artificial fill. Her uncle also had strong memories of watching the Marina District burn after the 1989 Loma Prieta earthquake, when parts of the ground liquefied, causing buildings to collapse and gas lines to break. Nicole wants to follow her grandmother's advice, but she needs to know a few things: "What neighborhoods and cities in the Bay Area are built on filled land? And what are those cities and neighborhoods doing to mitigate the risk of liquefaction?"
房子是70年代的，你说“现代地基”指的是新建房？还是老的房子地基也不稳？有些人说好像老房子的用料做工反而比新建筑好，不知真假。
液化区还有一个问题，就是通常靠海（湾）。想想4大华人区至少有3个在山上。海平面会不断上升，您懂的。
按海拔排序：
Palo Alto，30英尺 Fremont，56英尺 Cupertino，236英尺 Saratoga，423英尺
Palo Alto的101以东（靠近海湾海拔较低）是另一个世界“不能住人”。类似的Fremont的使命圣荷西海拔348英尺。
晓庆姐最喜欢的普洛西住的旧金山Pacific Height海拔370英尺。哪怕是奥克兰里也有好区，Piedmont海拔331英尺。
我说的现代地基指2000年以后。用一大整块水泥做地基。地震液化的时候地基漂在液化土壤上。房子不会被拆散。现在的building code和以前不一样。老房子要维修地基可能要花钱合规。具体问经纪。
专业啊！👍
这么说老房子地基问题更大，对吗？问了经纪，人说没问题。这不是按版上的说法，经纪的话不能全信，所以上来问问，说不定碰到懂的，这不就碰到你了吗😉。
看inspection。不放心自己戴N95爬进Crawl space里去看。有位朋友为了买房自嘲看地基看成了专家。我不知道地基问题长什么样。我的房子没有地基问题。但有雨后积水等问题。山区没办法。不影响使用就不管了。我的理解是，都老房子了，如果没问题在您手上通常也不会有什么问题。如果有问题，您就是修了以后也会继续出同样的问题。像我说的我的房子有积水/地下水问题一样。Location、location、location。
你口中的湾区指哪里？液化的基本在旧金山湾填海区，貌似只有旧金山半岛（旧金山-圣荷西）东边延湾部分少部分突出来部分才是填的，你说半个foster city还可信…..Foster City水景漂亮但地基确实令人遐想担忧。这么担心可以买在280沿线的山上
旧金山豪区Marina district
是的，地基旁有很深的shearing wall,防止水土流失
基本上填出来的土地都是liquefaction zone
https://www.kqed.org/news/11799297/large-parts-of-the-bay-area-are-built-on-fill-why-and-where
When Nicole was growing up, her grandmother always told her: Don't live anywhere built on artificial fill. Her uncle also had strong memories of watching the Marina District burn after the 1989 Loma Prieta earthquake, when parts of the ground liquefied, causing buildings to collapse and gas lines to break. Nicole wants to follow her grandmother's advice, but she needs to know a few things: "What neighborhoods and cities in the Bay Area are built on filled land? And what are those cities and neighborhoods doing to mitigate the risk of liquefaction?"
谢谢链接！