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How do I calculate how much concrete I need for a slab? Measure the area in feet. Multiply length by width, and then by thickness. Divide the resulting number by 27 to find cubic yards.
How much concrete do I need for a 10×10 slab?
The amount you will need for a 10 x 10 slab is 1.3 cubic yards, we always add an extra 10% to allow for any slab depth variations or spills that may occur.
How many yards of concrete do I need for a 24×24 slab?
For example, for a concrete slab that is 24′ X 24′ X 4”, simply enter 4 in the Thickness/Depth field, 24 in the Width field, and 24 in the Length field. Click “Calculate”. Your answer should be 7.11 yards. Note: The Concrete Volume Calculator can also be used to determine yardage for aggregate products.
How many square feet is a yard of concrete 4 inches thick?
One Cubic Yard of Concrete: 4-inches thick – covers 81 square feet.
How much does an 80 pound bag of concrete cover?
80 lb bag of concrete cubic feet 80 lb bag of concrete yields 0.60 cubic feet which is approximately around 0.0222 cubic yards that will cover around 3.6 sq ft area up to standard depth of 2 inch excavation or backfills, and for 1 cubic feet of landfill you will need 1.66 bags of 80 lb concrete.
How much cement do I need for a 12×12 slab?
Regarding this, “how much concrete do I need for a 12×12 slab?”, at 4 inches thick, generally you will need approximately 1.76 cubic yards or 47.52 cubic feet or 1.35 m3 (either 104 bags of 60lb or 80 bags of 80lb) of premixed concrete for a 12×12 slab, at 5 inches thick slab, 2.22 cubic yards or 59.90 cubic feet or.
How do I calculate how much concrete I need?
Essentially you are solving for volume and then converting to cubic yards. For concrete, the formula for volume is as follows: length x width x thickness.Here’s what the math looks like for a 10′ by 10′ concrete patio: 10 x 10 = 100 square feet. 4 ÷ 12 = .33. 100 x .33 = 33 cubic feet. 33 x .037 = 1.22 cubic yards.
How thick do I need my concrete?
Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.
How much does it cost to pour a 24×24 slab of concrete?
A typical 24×24 garage slab costs between $3,057 and $5,944 with prices ranging from $5.31 to $8.31 per square foot for a 4” reinforced slab of concrete, and $6.83 to $10.32 per square foot for a 6” slab of reinforced concrete.
How do I calculate square feet into yards of concrete?
To convert square feet to cubic yards, you simply multiply your square footage figure by the height or depth of the area (in feet) to get a volume measurement in cubic feet. You then divide the total by 27 to get your measurement in cubic yards.
How many square feet cover a yard of concrete?
How much concrete is in a yard? Concrete volume is measured in cubic yards. When poured on a perfectly level surface, one cubic yard will cover 27 square feet at one foot thick.
How many bags of cement do I need for 1 yard?
# It takes approximately 5 Bags of Portland cement, 8 cubic ft of sand, and 20 cubic ft of gravel to make approximately 1 cubic yard (27 cubic feet) of concrete.
How many yards is a 60 bag of concrete?
If you’re using 60lb bags of concrete, you’ll need 60 bags to make a yard. If you’re using 80lb bags of concrete, you’ll need 45 bags to make a yard.
How many bags of concrete make a yard?
How many concrete bags do you need? One 80lbs bag of Quikrete Concrete Mix will yield approximately . 60 cu ft. So it will take 45 bag to equal one cubic yard of concrete.
How many bags of quikrete do I need for a 10×10 slab?
The thickness of your 10′ x 10′ slab will determine just how many bags you need. The average thickness of a 10′ x 10′ concrete slab for a shed is 4 inches thick. At 4″ thick, your 10 x 10 slab will take 56 bags of concrete that weigh 80 lbs.
How much concrete do I need for a 30×30 slab?
18 yards of 3000 psi concrete mix @ 135.00 per yard. Wire mesh reinforcement. A double row of #4 rebar around the edges. Labor to form the slab.
How many bags of concrete do I need for a 10×8 slab?
Regarding this, “how many bags of concrete do I need for a 10×8 slab?”, at 4 inches thick, generally you will need approximately either 58 bags of 60lb or 45 bags of 80lb of premixed concrete for a 10×8 slab, at 5 inches thick slab, either 73 bags of 60lb or 56 bags of 80lb premixed concrete are required, while at 6.
What is the concrete formula?
Use the formula. Calculating the volume for concrete requires using three dimensions: length times width (which is area) times the height (thickness) or L x W x H. If you are using feet as your standard unit of measurement, this formula will give you the volume of concrete in cubic feet.
What is cement formula?
4CaO·Al2O3·Fe2O3 = calcium alumino ferrite. C-S-H. Calcium silicate hydrate, a colloidal and mostly amorphous gel with a variable composition; this is the major hydration product of Portland cement, constituting approximately 70 percent of the paste, and is the phase providing most of the strength and binding.
How many pounds can 4 inches of concrete hold?
Typically we like to limit the weight to about 40 lb/sqft on an unknown 4″ slab. In most cases you can go to 80 lb/sqft in isolated spots, but unless you know roughly what the soil bearing and reinforcing is for that slab you might be looking at cracking.
Do you need rebar for 4 inch slab?
The thickness of rebar should be no more than 1/8 that of the slab, so a 4” slab shouldn’t have steel greater than #4 or 1/2″ bar. It’s best to check with a Structural Engineer if your slab will bridge or cantilever. What is this? For 4” concrete slabs used for driveways and patios, #3 rebar is common.
How strong is 4 inches of concrete?
A concrete patio slab should be at least 4 inches thick and have a compressive strength of 3,000 PSI.
