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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.
What is the formula to figuring out concrete?
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.
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 6 inches thick?
One Cubic Yard of Concrete: 4-inches thick – covers 81 square feet. 5-inches thick – covers 65 square feet. 6-inches thick – covers 54 square feet.
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 area does a 40 lb bag of concrete cover?
Regarding this, how much does a 40 lb bag concrete cover, as 133 lb concrete = 1 CF, so a bag of 40 lb concrete = 40/133 = 0.30 CF, therefore, a 40 lb bag concrete approximately cover around 1.8 square feet area upto depth of 3 inch.
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 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.
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 many 80 lbs bags of concrete make a cubic yard?
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. If you have a project over a 1/2 a cubic yard you should consider our Mix On-site Concrete especially if you are hand mixing.
How many bags of concrete do I need for a 10×10 slab 4 inches thick?
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 many yards of concrete does a concrete truck hold?
Each cubic yard costs about $65. However, a fully loaded cement truck will hold 10 cubic yards—and partial “short” loads cost $15 to $20 extra for every cubic yard less than a full load.
How many square feet is 3 cubic yards?
Cubic yard to Square feet Calculator 1 cubic yard = 9 ft 2 0.037 cubic yard 3 cubic yard = 18.7208 ft 2 0.1925 cubic yard 4 cubic yard = 22.6786 ft 2 0.2963 cubic yard 5 cubic yard = 26.3162 ft 2 0.4141 cubic yard 6 cubic yard = 29.7173 ft 2 0.5443 cubic yard.
What does 1 yard of concrete weigh?
Concrete Weight per Cubic Yard A solid slab of concrete weighs 4,050 pounds per cubic yard. A cubic yard of broken up concrete weighs 2,025 pounds.
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 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.
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.
How many cubic feet is an 80 lb bag of concrete?
45 cubic feet and an 80-pound bag yields . 60 cubic feet. One 50-pound bag of Quikrete Fast Setting Concrete Mix yields about . 375 cubic feet.
How many square feet does a 60 lb bag of concrete cover?
@ 2″ thick a 60 lb bag of concrete will fill 2.7 sq. ft. @ 4″ thick a 60 lb bag of concrete will fill 1.35 sq. ft.
How much does a 90 pound bag of concrete cover?
A: QUIKRETE® Concrete Mix will yield approximately 0.675 cubic feet per 90-pound bag when mixed. For a pour of 15 feet by 10 feet at 5 inches thick, you will need 62.5 cubic feet of concrete, or 93 90-pound bags.
