Things You'll Need
2 feet plastic pipe, 1-inch diameter
U-bend, 1-inch diameter plastic pipe
Large plastic barrel
Electric or hand saw
Two large, sturdy door handles
Septic tank covers, which sit atop a tank to protect it from excess moisture -- and you from unpleasant odors -- have been known to crumble and collapse into the tank. The worst-case scenario involves replacing an entire tank, which can cost thousands of dollars. If the structural integrity of the septic tank hasn't been compromised by a collapsed cover, however, you can create another concrete tank cover that will ensure that the bacteria in your tank continue to thrive and your septic system continues to function.
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Cut the bottom of the plastic barrel to create a large form about 1 foot deep. The form should be large enough to cover the entire septic tank opening, plus a few inches for overlap. Set the plastic pipe in the middle of the barrel, standing up vertically. The pipe will act as a vent for the tank.
Mix the cement according to the manufacturer's instructions. Pour it into the barrel to a depth of 4 to 6 inches.
Place the handles on the top of the cement. The handles should be long enough extend at least 3 inches into the cement. Let the cement dry at least 24 hours. You should then be able to pick up the septic tank cover by the handles.
Cut the barrel away from the concrete. Place the cover on top of the septic tank, making sure that it fits snugly over the top of the tank. Attach the U-bend to the top of the straight pipe that comes out of the cover. The U-bend will allow the tank to vent without collecting rainwater.
Choose a plastic barrel that's large enough to cover the septic tank opening. You may need to cut the middle of the tank and use a piece of plywood for the bottom part of the form.
Do not drop the septic tank cover. It will be quite heavy and can break -- or break other things -- if dropped.