![]() Note: It is convenient to use tar paper because it doesn't readily stick to the cured concrete and is easy to remove. To get rid of them use scissors to cut through the inner tar paper, in the bulging area, down to the fold and tape the cut so that the tar paper lies flat. There will likely be bulges in the tar paper ring. You will need to trim portions of the upper edge of the tar paper ring so that the height of the ring is uniform. Place the remaining unsecured length of tar paper around and behind the secured tar paper and tape the tar paper together so that you essentially have a tar paper ring. Place a long piece of duct tape over the beginning end of the tar paper so that it is taped to the tar paper behind it as seen in Photo 4. When you work your way back to the starting point, place the unsecured tar paper behind the beginning edge of the secured tar paper as seen in Photo 3. Tape the tar paper to the tire, taping the free end of the tape inside the tire as seen in Photo 2.Ĭontinue taping the tar paper to the tire at 3 inch (76 mm) intervals all the way around the tire. Position the tar paper inside the tire bead with the folded edge down and place a piece of duct tape about 2 inches (50 mm) from the end. This gives the illusion that we are working with only one tire.Ĭut a 10 inch (254 mm) piece of the tar paper and fold it in half lengthwise so that you have a folded piece of tar paper that is 5 inches (127 mm) wide and 40 inches (1m) long. In Photo 5 the shadows obscure the lower tire so that only the upper tire is visible. The upper tire is the temporary mold which provides support to keep the concrete in place and is later removed after the concrete has cured. The bottom tire is the permanent mold and is filled with concrete. To start this section I will refer you to Photo 1 to show what we are going to build in the next 2 steps. Ready-mix concrete: 2- 60 pound (27 kg) bags Old tires: 2, one for the pier and one for the mold. Materials Needed for 1 Concrete Tire Pier:ģ/8 inch (10 mm) rebar, 12 inches (305 mm) long: 3 However, I am only providing instructions and a material list for just one concrete tire pier.ģ/4 inch (20 mm) metal pipe, 3 or 4 feet (.91 or 1.22 m) long 2 needed In this project I am making 4 concrete tire piers, to support wooden beams, using worn tires from my small car. Those with access to specialty tools and materials could certainly do things differently. I have tried to make this project as simple as possible, keeping recycling in mind and using tools, materials and technology that are within reach of most people.
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