Steel holds the world together, and no one knows that better than the builders here in earthquake country where the connections tend to be mighty metallic. At the top are rebar cages that go into the base of our footings. They get overlapped and tied together and the concrete is poured over and around them. In the second pic, that huge bolt you see in the foreground is an anchor bolt that stretches down over two feet into the form. We'll attach a big steel hold down to the bolt that will connect the concrete foundation to the wood framing. Hold downs are placed at each corner of a shear wall. The whole system works together to prevent the house from breaking off into the ocean during the next big one.