Ureinforced Masonry Building, any firefight in SF will tell you the city is full of them. https://en.m.wikipedia.org/wiki/Unreinforced_masonry_building https:/

Ureinforced Masonry Building, any firefight in SF will tell you the city is full of them. https://en.m.wikipedia.org/wiki/Unreinforced_masonry_building https://en.m.wikipedia.org/wiki/Unreinforced_masonry_buildin...