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Waite Concrete Products, LLC <br /> Anti-buoyancy: 1000 Gallon Tank <br /> Minimum Cover-18" <br /> The following is a list of methods that may be used, as additional <br /> precautions, to insure tank submergence in area with high ground water. <br /> 1 . Require a minimum cover of 18" where there is high groundwater. <br /> 2. After setting the tank, pour an additional thickness of concrete over the <br /> tank top 3" minimum extending a minimum of 12" beyond the sides of <br /> the tank. <br /> 3. Concrete buoyancy blocks secured with stainless steel cables placed <br /> over tank. <br /> Calculations in feet: Tank: Cover: <br /> Length 6.75 6.75 <br /> Width 6.25 6.25 <br /> Height 5.50 1.50 <br /> Volume 232.03 63.28 <br /> Water Weight (Ib) 14485 <br /> Tank Weight (Ib) 9300 <br /> Weight to Balance (Ib) 5185 <br /> Weight to Cover (Ib) 5333 <br /> Density: <br /> 62.43 Water (Ib/ft3) <br /> 1.35 Soil Factor (typical bulk density) <br /> 84.28 Soil (Ib/ft3) <br /> 2.21 Concrete Factor <br /> 8.24 Concrete (Ib/ft3) <br />