how to work out how much concrete for footings?
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CONCRETE CALCULATOR FORMULA Measure the length and width that you'd like to cover. Multiply the length by the width to determine square footage. Convert the thickness from inches to feet. Multiply the thickness in feet by the square footage to determine cubic feet.
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Multiply the value from Step 1 by one million. The result is the value expressed in thousands of cubic feet, or MCF. For example, 12.56 BCF x 1,000,000 = 12,560,000 MCF.
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The formula: Number of Cubic Yards = Length (in feet) Width (in feet) Depth (in feet) ÷ 27. Simply multiply the three dimensions together to find the number of cubic feet, then divide by 27 to find the number of cubic yards.
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["Convert all dimensions into feet (18” ÷ 12” = 1.5')", "Multiply length x width x height (16' x 4' x 1.5' = 96 cubic feet)", 'Divide (96 ÷ 27 = 3.56 cubic yards)']
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One cubic foot equals 1728 cubic inches. So, to convert from cubic inches to cubic feet you should divide your cubic inches figure by 1728.
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How Much Does Concrete Weigh? The weight of concrete is calculated based on the length, width and thickness of the slab. *A cubic foot or yard of concrete weighs less once it's broken up due to the amount of empty of space now included in the measurement.
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An 80-lb bag of dry concrete will weigh about 80-lbs mixed. Divide the amount of weight you need by 80lbs and you've the number of bags needed to mix. concrete weighs anywhere from 135lbs to 150lbs per cubic foot.
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['DLBD method to determine material requirement for Nominal Concrete Mix (M20 – 1:2:4)', 'Step-1: ... ', 'Step-2: ... ', 'So, Sand required = 0.07*1600 = 112 kgs.', 'and Aggregate required = 0.14*1450 =203 kgs.', 'Step-3: ... ', 'Empirical method to determine material requirement for Nominal Concrete Mix:-', 'Step-1:']
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If your home's foundation is in need of help, concrete piers are an extremely effective method of foundation repair for homes with damaged or sagging foundations. A hole approximately one foot in diameter is drilled to a depth of anywhere from 12 to 20 feet underneath your home.
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Divide the desired depth for your landscape rock in inches by 12 to convert it to feet. For instance, if you want the rock to be 2 inches deep, divide 2 by 12, which equals 0.1667 feet. Multiply the length by the width by the desired depth in feet for your landscape rock to find the number of cubic feet you will need.
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According to the table above, one cubic yard of concrete placed at a thickness of 5-inches covers 65 square feet. In a perfect universe, our 1,080 square foot driveway will need exactly 16.62 cubic yards of concrete (1,080 square feet / 65 square feet equals 16.62 cubic yards).
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30 cubic feet, 60 pounds of concrete mix yields . 45 cubic feet and an 80-pound bag yields . 60 cubic feet. One 50-pound bag of Quikrete Fast Setting Concrete Mix yields about .
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On average footings cost $500 to $1,900 per 100 linear feet. The price varies based on the size of the footings and amount of excavation needed. Here are some factors to consider when pricing concrete footings.
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['Multiply your length, width and height figures together, giving you a total in cubic inches (in3)', 'Divide the total by 1728 (as there are 1728 cubic inches in a cubic foot).']
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Measure the width that the footing extends past the foundation wall. Footings are typically constructed with a width equal to twice the thickness of the foundation wall. By doubling the extension you measured to account for the side of the foundation you can't see, you would get the width of the foundation wall.
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First, find out how much total floor area a building has. Then, subtract the shared square footage to determine the usable square footage. The owner or owner's agent should be able to give you these numbers. Then divide the total floor space by the USF to get the load factor.
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Multiply the three dimensions together to find the number of cubic feet (0.5 feet x 12 feet x 12 = 72 cubic feet) Divide the cubic feet by the number of cubic feet in a cubic yard (27) to find the number of cubic yards (72 ÷ 27 = 2.67 cubic yards).