How do you get concrete walls with a curve? In this video, Matt Risinger, master builder, visits a building site erecting some board-form walls, and a curved wall is already up. In order to achieve the beautiful grain in the wall, all of the forms were sandblasted. The material is Doug Fir. At a wall in progress, the wall is 9' tall and will require serious support, achieved by kickers that go out 12-15 feet and there are also adjusters. The fiberglass form ties are in, but they disappear once the wall is poured. There will be a foam core in the wall, which will be an outside wall on the building. There will be an inside wall and an outside wall, and a big piece of insulation between them. The finished wall is incredibly beautiful. One of the walls did not need to be insulated because there is an air gap between the structure and the living quarters. On the other two there are windows that are in the actual pour of the concrete. The boards for the walls are bent and a radial arm saw is used to make sure the depth is the same on all of them and so that the bend stays exactly the same. All of the relief must be exactly the same. Italian glass windows make the largest glass in the world. One window can be 10' x 36’. No one else creates something like that. Doug Fir boards are curved and assembled on site. There are adjustable jacks so when the kickers are added they can do fine-tune adjustment. Stabilizers are added and plasticizers, using a five-sack mix for a lot more of a top coat that gets into the grain. They use 3-4 vibrators and the concrete is placed with a pump, making sure everything is poured at one time, pouring it from the bottom up. Silicone is put in between the boards and the water stays in. If the water gets out then there will be dry spots that will cause sand, which will bleed through. Supporting the system are steel pipes that exceed the engineering request. There is also a 2' x 2' grid work of support beams and all the steel interconnects from pile to pile. As all the rebar comes up and out of the pile, it's connected to the next pile, all tied to be one giant grid work. Even if one of the piles fails," the interconnection of the steel will make up for it. This is important on this manmade lake.