Our next step is the hearth. The hearth is made up of two layers of concrete: one structural 3 1/2" slab with rebar and wire mesh and another on top made up of insulating concrete. This insulating concrete is made by mixing cement with vermiculite to make a fluffy lightweight concrete having insulating qualities. We'll try the pour this Saturday if the rain holds up.
To form the interior part of the stand we built braces to support the OSB deck. These are not fastened to the structure since the weight of the concrete will hold them in place. Look at the 2x4 cleat around the perimiter of the block stand. It is screwed into the block with TapCon screws and will support/line-up the 2x8 hearth forms.
To form the interior part of the stand we built braces to support the OSB deck. These are not fastened to the structure since the weight of the concrete will hold them in place. Look at the 2x4 cleat around the perimiter of the block stand. It is screwed into the block with TapCon screws and will support/line-up the 2x8 hearth forms.
A note about green building: We strive to use as much reclaimed/recycled materials in this project. My friend Ben has acquired the great majority of the lumber from construction site dumpsters (with the builder's permission). This included rebar, 2x4's, 2x8's, plywood. He could have enought to build an addition to my house, but he's too busy to scrounge all day for me! It's amazing how much builders waste in building homes. You would think that in a tight economy, they would revisit their building practices to conserve materials. We've saved quite a bit in material costs.
Next blog entry we will detail the pour. After the hearth comes the meat and potatoes of the build--the brick oven. Thanks to my brother-in-law Lance, I now have a brick cut schedule for each course of the dome. I wish I knew AutoCad. I am, though, working on Google SketchUp to mock up the look of the oven. We'll see how that turns out.
Next blog entry we will detail the pour. After the hearth comes the meat and potatoes of the build--the brick oven. Thanks to my brother-in-law Lance, I now have a brick cut schedule for each course of the dome. I wish I knew AutoCad. I am, though, working on Google SketchUp to mock up the look of the oven. We'll see how that turns out.
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