How many bags of concrete for 8x8 slab

Oct 7, 2023 · Choose Round Column (or Round Slab) on the calculator. Enter Height 4 ft (or 48 in) Enter Diameter 10 in. Calculate and the answer is 0.08 cubic yards for one concrete tube. Multiply 0.08 x 50 = 4 total cubic yards of concrete for 50 tubes. Note that this calculation is the volume of your tubes only and does not account for any overflow or loss ...

Welcome to the concrete calculator. It will help you calculate the number of bags of concrete required for your path, slab or post holes. Please select your stateConcrete slab leak repair can be a costly endeavor, but it is an essential one to ensure the structural integrity of your home. If you suspect a leak in your concrete slab, it is i...How many bags of concrete do i need for a 8×8 slab at 4 inches thick. At 4 inches thick, for a 8×8 slab you would need 0.782 cubic yards or 21.12 cubic feet of concrete. If you use premix concrete, either 36 80-Pound, 47 60-pound, 57 50-pound, or 71 40-pound bags of premixed concrete will be required. Let’s do calculation and proceeds ...At 3 inches thick, for a 10×15 slab you would need approximately either 63 80-Pound, 84 60-pound, or 125 40-pound bags of premixed concrete. If you measure in yards, 1.39 cubic yards (or 37.5 cubic feet) of concrete will be required. Let's do calculation and proceeds following steps: 1. Convert 3″ thickness in feet = 3/12 = 0.25′. 1 cubic yard = 27 cubic feet. With this formula in mind, you’ll be able to calculate just how much concrete or cement you’ll need for your project: One 60-lb bag of concrete gives you .45 cubic feet of concrete when mixed with 2.5 quarts of water. In order to have enough concrete for one cubic foot, you’ll require 2.2 bags of 60-lb concrete. Pour and Level the Concrete. Drag a straight 2×4 (screed board) across the top of the concrete forms to level and begin to finish the concrete surface. Make multiple passes if needed to create a flat, evenly filled area. Have a helper add or remove concrete in front of the screed as you pull it. Family Handyman.With a brief look, a 20x24 area at 6 inches deep, you would need approximately 12.62 tons or 8.89 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas. Wire mesh on average costs $0.56 per sq ft and fiber mesh costs $0.13 per sq ft. So for your 480 sq ft area, this may roughly cost $268 ...

With a brief look, a 16x24 area at 6 inches deep, you would need approximately 10.1 tons or 7.11 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas. Wire mesh on average costs $0.56 per sq ft and fiber mesh costs $0.13 per sq ft. So for your 384 sq ft area, this may roughly cost $215. ...At 6 inches thick, for a 10×12 slab you would need approximately either 100 80-Pound, 134 60-pound, or 200 40-pound bags of premixed concrete. If you measure in yards, 2.22 cubic yards (or 60 cubic feet) of concrete will be required. Let's do calculation and proceeds following steps: 1.Fast Way To Lay A Concrete SlabFast Way to Pour a Concrete SlabFastest Possible Way to Pour ConcreteFast Small Concrete SlabHow to Make a Concrete PadHow to ...With a brief look, a 13x13 area at 6 inches deep, you would need approximately 4.44 tons or 3.13 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas. Wire mesh on average costs $0.56 per sq ft and fiber mesh costs $0.13 per sq ft. So for your 169 sq ft area, this may roughly cost $94. ... 1 cubic yard = 27 cubic feet. With this formula in mind, you’ll be able to calculate just how much concrete or cement you’ll need for your project: One 60-lb bag of concrete gives you .45 cubic feet of concrete when mixed with 2.5 quarts of water. In order to have enough concrete for one cubic foot, you’ll require 2.2 bags of 60-lb concrete. To determine how many bags of concrete you will need, divide the total cubic yards needed by the yields, at 6 inch thick, for a 10×8 slab you will need 1.48 yards of concrete, so number of 80lb bag of concrete = 1.48 ÷ 0.022 = 68 bags, No. of 60lb bag = 1.48 ÷ 0.017 = 87 bags and No. of 40lb bag = 1.48 ÷ 0.011 = 135 bags. Regarding this ...Paving calculator. Use our handy calculator to work out how many slabs you require to cover a surface area. Simply enter the dimensions of the area to be paved in, enter your required slab size and then press the Calculate button to see the result. Always remember paving slabs can be heavy. If you're laying slabs of 600mmx600mm or larger, ask ...

With a brief look, a 30x15 area at 6 inches deep, you would need approximately 11.83 tons or 8.33 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas. Wire mesh on average costs $0.56 per sq ft and fiber mesh costs $0.13 per sq ft. So for your 450 sq ft area, this may roughly cost $252 ...How many 80 pound bags of concrete to pour a 8x8 slab 4 inches thick? U need 1.63 80lb bags per square ft so 131bags to do 8ft by 8ft.The Concrete by 60lb Bag calculator computes the number of 60 pound bags of concrete and water needed to mix a volume ( V) of concrete. INSTRUCTIONS: Choose units and enter the following: ( V ) Volume of Concrete Needed. 60 lb Bags (nB): The calculator returns the number of 60 lb bags needed and the gallons of water needed.1 bag cement = 50kg. No. of bags of cement = 570/50. Number of cement bags are required for 100 sqft 6 inch slab = 11.5 bags. Therefore, the typical amount of cement required for 100 sq ft (square feet) of reinforced concrete slab (RCC roof) at 6 inches thick is about 570 kg (or approx. 11.5 bags of 50kg cement).

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How much concrete do I need for an area of 10 ft x 12 ft x 6" depth? 2.222 cu. yds. How many concrete bags would I need for a 10 ft x 12 ft x 6" slab? 100 x 80lb Concrete bags. How much does it cost to pour a 10'x12' x6" slab? Ready-mix costs approx $373.09. How much does it cost to hire a contractor to concrete a 10'x12' x6" slab?Welcome to the concrete calculator. It will help you calculate the number of bags of concrete required for your path, slab or post holes. Please select your stateHow much concrete does an 80-pound bag of Quikrete make? An 80-pound bag of Quikrete typically makes around 0.6 cubic feet of concrete when mixed with water. How many 80lb bags of concrete in a cubic foot? There are typically around 1.5 to 1.6 80-pound bags of concrete in a cubic foot. How do you calculate concrete for a tube?blocks = wall sq ft block sq ft. If you’re using a standard 8″ x 8″ x 16″ block, find the number of blocks needed by dividing the wall square footage by 0.89. blocks = wall sq ft 0.89. We recommend adding 5%-10% additional blocks to account for broken blocks or blocks that need to be cut for the edges.

How many 80 pound bags of concrete to pour a 8x8 slab 4 inches thick? U need 1.63 80lb bags per square ft so 131bags to do 8ft by 8ft.How many yards of concrete do i need for a 30×40 slab at 5″ thick. You will need approximately 18.49 cubic yards or 499 cubic feet of ready mix concrete for a 30’×40′ slab at 5 inches thick. Maths calculation:- 1) 30×20 = 1200 square footage, 2) 5÷12 = 0.416 feet, 3) 1200 ×0.416 = 499 cubic feet, and 4) 499× 0.037 = 18.49 cubic yards.Most fence post holes will need between 1 - 4 bags of concrete to securely hold the post in place. The best way to determine the size of the hole is: For example: A 6' high fence post 4"x4" needs a hole 12" in diameter by about 2' to 3' deep. That would take four 50 lb. bags of fast setting concrete mix per fence post.A concrete slab costs $6 to $12 per square foot on average installed, or $5,400 to $10,800 to pour a 30'x30' slab. Concrete materials cost $3 to $7 per square foot. Most concrete slabs are 4" to 6" thick and are used to build a garage floor, patio, or house foundation.How many yards of concrete do i need for a 30×40 slab at 5″ thick. You will need approximately 18.49 cubic yards or 499 cubic feet of ready mix concrete for a 30'×40′ slab at 5 inches thick. Maths calculation:- 1) 30×20 = 1200 square footage, 2) 5÷12 = 0.416 feet, 3) 1200 ×0.416 = 499 cubic feet, and 4) 499× 0.037 = 18.49 cubic yards.Enter your dimensions. units length (l) width (w) height (h) quantity. This concrete calculator determines the amount of concrete bags you need to purchase or use when pouring concrete, to help you buy the right amount of bags and measure the right volume of concrete in your projects that require concrete slabs.Apr 25, 2023 · For example, if one 80-pound bag of concrete mix yields 0.6 cubic feet, you can calculate the number of bags required by first converting the volume in cubic yards to cubic feet (1 cubic yard = 27 cubic feet) and then dividing the total cubic feet by the yield per bag. How much concrete do I need for an area of 7 ft x 7 ft x 6" depth? 0.907 cu. yds. How many concrete bags would I need for a 7 ft x 7 ft x 6" slab? 40.7 x 80lb Concrete bags. How much does it cost to pour a 7'x7' x6" slab? Ready-mix costs approx $252.90. How much does it cost to hire a contractor to concrete a 7'x7' x6" slab?Just divide the total weight needed by the weight in each bag. Example: The coop slab needs 6,666 pounds of dry concrete. You found a good price on palletized 80-pound bags of fast-mix concrete. Dividing 6,666 by 80 produces the rounded up number of 84. So, for the slab, you need 84 bags (or two pallets) of 80-pound concrete.The following chart will help you gain an idea of how many bags of premixed concrete you'll need to purchase for laying 4" and 6" slabs. Other projects may require different calculations, but this is a good point of reference for determining the amount needed. ... Slab 6" Thick: 60-lbs. Bags: 2: 3: 5: 7: 9: 15: 20: 35: 45: 50: 100: 80-lbs. Bags ...

As per general practices, generally you will need approximately 0.20 cubic yards or 5.28 cubic feet or 0.15 m3 (either 12 bags of 60lb or 9 bags of 80lb) of premixed concrete for a 4'×4′ slab at 4 inches thick. At 5 inches thick, for a 4'×4′ slab, 0.247 cubic yards or 6.66 cubic feet or 0.189 m3 (either 15 bags of 60lb or 11 bags of ...

#EverythingAboutConcrete #MikeDayConcreteHow to pour a concrete slab by yourself. One man concrete slab pour.I'm going to show all you beginners and diy'rs h...How Many Bags of Concrete for a 4×4 Slab? To determine the number of bags of concrete needed for a 4×4 slab, we must consider the thickness of the slab. For a 2-inch thick slab, the amount of concrete required will be different from that of a 4-inch thick slab. Let's break it down: Slab Thickness: 2 inchesMay 27, 2020 · This video shows how to accurately calculate the number of concrete bags that you will need to purchase for most projects and have delivered to your house or... In this regard,how many bags of concrete do i need for a 8×10 slab? bags of concrete so you don't have to handle and mix as many bags. 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 ...Enter the path's length and width as 5 m and 1 m, respectively. The calculator shows your excavation area is 5 m². Next, input the depth of the excavation as 15 cm. Instantly, the calculator tells you that you require 0.75 m³ of gravel, which weighs 1.26 tonnes. You can use the calculator in reverse, too!With a brief look, a 8x30 area at 6 inches deep, you would need approximately 6.31 tons or 4.44 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas. Wire mesh on average costs $0.56 per sq ft and fiber mesh costs $0.13 per sq ft. So for your 240 sq ft area, this may roughly cost $134. ...This formula will give you the estimated cubic yardage needed to do your project. For example if you have a concrete slab 24' L x 24' W x 6" thick, the formula would read like this; 24 x 24 = 576 x .5 = 288 divided by 27 …In addition to estimating how many bags of concrete mix you'll need for a job, our concrete calculator estimates how many cubic feet of concrete the slab will require. If you need the volume in cubic yards, simply divide the estimate of cubic feet by 27 to calculate yards of concrete needed for the project. For example, if your area is 10 ...Calculate the volume you need in cubic yards. Multiply the length (10 ft.) by the width (10 ft.) by the depth (.35 ft., or 4 in.) and divide it by 27 (the number of cubic feet in a cubic yard). You get 1.3 cu. yds. Then add 10 percent to allow for spillage and slab depth variations to help determine the concrete cost per yard.

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At 3 inches thick, for a 3×3 slab you would need approximately either 4 80-Pound, 5 60-pound, or 8 40-pound bags of premixed concrete. If you measure in yards, 0.083 cubic yards (or 2.25 cubic feet) of concrete will …Feb 6, 2023 · Here is a concrete quantity and cost comparison of laying a concrete slab yourself. The total price is based on each 80-lbs (32.6kg) bag of concrete costing $6.17 in 2022. Dimensions How much concrete do I need for an area of 9 ft x 9 ft x 6" depth? 1.5 cu. yds. How many concrete bags would I need for a 9 ft x 9 ft x 6" slab? 68 x 80lb Concrete bags. How much does it cost to pour a 9'x9' x6" slab? Ready-mix costs approx $306.83. How much does it cost to hire a contractor to concrete a 9'x9' x6" slab?When it comes to maintaining the structural integrity of a building, addressing concrete slab leaks is crucial. A concrete slab leak occurs when there is a break or crack in the co...You can use a concrete slab calculator to find the volume based on the dimensions of your slab. Input the bag size: Enter the size of the concrete mix bag in pounds (e.g., 60 or 80 pounds). Input the bag yield: Enter the yield of the concrete mix bag in cubic feet (e.g., 0.45 or 0.6 cubic feet).Regardless of premixed concrete bag size, you need to figure out the volume of concrete in cubic yards or in cubic feet or in cubic meters or in RMC truckload before ordering the …The block fill estimator calculates the volume of fill needed for a specified number of concrete blocks. To use this calculator, enter the total number of blocks in the project that was estimated previously, and select the width of the block used (6", 8" or 12"). The calculator will then return the estimated volume of fill in cubic yards. How many concrete bags would I need for a 8 ft x 8 ft x 6" slab? 54 x 80lb Concrete bags. How much does it cost to pour a 8'x8' x6" slab? Ready-mix costs approx $277.86. A Practical Example. To get a better idea of how valuable a concrete calculator can be, let’s try a real-world example and build a deck. This deck will require 12 footings. Each footing will be 12 inches across and two feet deep to get below the frost line. A rough estimate might say 24, 60-lb. bags of concrete.Quikrete concrete for fence posts can be mixed in the hole, making for easier post setting and cleanup; Slope the concrete 1″ up the post (above the ground) at about a 45 degree angle to shed water away; Caulk the seam between the post and concrete with exterior grade caulk to prevent water from seeping in between the concrete and postThis series of concrete calculators has been developed to help you plan your project. You can calculate how much concrete, cement, sand, mortar or render you will need. For each calculation you will have to know the dimensions of your object. The calculator will perform the sums for you - where relevant it will add a small percentage for the wastage that … ….

A 100-ft. run of concrete can shrink as much as 1/2 in. as it hardens. Shrinking causes cracks. You can't stop your slab from cracking, but you can control where it cracks. Cut in control joints to create individual sections no larger than 8 x 8 ft. for a 3-1/2-in.-thick slab, and no larger than 10 x 10 ft. for a 5-1/2-in.-thick slab.Input the bag size: Enter the size of the concrete mix bag in pounds (e.g., 60 or 80 pounds). Input the bag yield: Enter the yield of the concrete mix bag in cubic …Normal range: $3,600 - $7,200. Pouring a concrete slab averages around $5,400, and most slabs cost between $3,600 and $7,200, depending on square footage, thickness, and some other factors. C hances are, you've given very little thought about concrete slabs.Apr 26, 2024 · Input the weight of one bag of premixed concrete - again, check the bag. Account for waste and spillage (usually 5-10%) and voila! Now you know how many bags you truly need. If you prefer to mix your own concrete, you have to know the mix ratio that you want to follow. Concrete mix ratios determine the strength of the resulting concrete. A concrete slab will be easy to level and get a good base to construct a timber panel sun-floor. With Postcrete, you may not get the best level as it sets fast, and you will not have the ample time needed to level the slab; this makes concrete the better alternative. ... How Many Bags of Postcrete Do I Need? You usually need between one and ...Apr 26, 2024 · Input the weight of one bag of premixed concrete - again, check the bag. Account for waste and spillage (usually 5-10%) and voila! Now you know how many bags you truly need. If you prefer to mix your own concrete, you have to know the mix ratio that you want to follow. Concrete mix ratios determine the strength of the resulting concrete. Quikrete concrete for fence posts can be mixed in the hole, making for easier post setting and cleanup; Slope the concrete 1″ up the post (above the ground) at about a 45 degree angle to shed water away; Caulk the seam between the post and concrete with exterior grade caulk to prevent water from seeping in between the concrete and postConcrete Slab Installation Cost Estimate. Average Cost (24x24) $3,460. Highest Cost (40x60) $14,400. Lowest Cost (10x10) $600. Advertisement. Compare Quotes From Top-rated Local Contractors.How many bags of concrete do i need for a 12×12 slab at 4 inches thick. At 4 inches thick, for a 12×12 slab you would need approximately either 80 80-Pound, 107 60-pound, or 160 40-pound bags of premixed concrete. If you measure in yards, 1.78 cubic yards (or 48 cubic feet) of concrete will be required. How many bags of concrete for 8x8 slab, How many concrete bags would I need for a 5 ft x 7 ft x 6" slab? 29.1 x 80lb Concrete bags. How much does it cost to pour a 5'x7' x6" slab? Ready-mix costs approx $229.94. How much does it cost to hire a contractor to concrete a 5'x7' x6" slab? A pro costs between $175.00 and $367.50. How do you calculate concrete volume?, Most fence post holes will need between 1 - 4 bags of concrete to securely hold the post in place. The best way to determine the size of the hole is: For example: A 6' high fence post 4"x4" needs a hole 12" in diameter by about 2' to 3' deep. That would take four 50 lb. bags of fast setting concrete mix per fence post., Otherwise, simply type your dimensions of the stone into the calculator. Our bulk material calculator is a powerful tool that will help you calculate the volume of stone required. In addition, if you know the density of the stone and cost per unit mass/volume, then you can also calculate the total cost. Coupled with a little preparation, this ..., The calculator will indicate the number of bags you will need to build a 4 inch or 6 inch slab. (all yields are approximate and do not allow for uneven substrate, waste, etc.) Enter Number of Square Feet Desired: For a 4" Slab: Number of 40 lb. bags: Number of 50 lb. bags: Number of 60 lb. bags: Number of 80 lb. Bags: For a 6" Slab:, One yard equals 3 cubic yards or 2760 cubic inches; one bag of cement is 765 cubic inches. – With these numbers, each bag of cement is about 1/4th of a cubic inch so there would be 160 bags per cubic yard and four rows across. So if you had a project that needed about 50 yards of concrete, it would take 8000 (160 x 50) bags of cement!, Enter the total volume (in cubic meters) of the area you want to fill with the sand and cement mix. Select the sand and cement mix ratio (cement: sand) from the dropdown menu. Our calculator supports three mix ratios: 1:3, 1:4, and 1:5. Click the " Calculate Materials " button to get the estimated amount of sand and cement needed for your ..., As per general practices, generally you will need approximately 89 bags of 40lb (pounds) of premixed concrete for a 8×10 slab at 4 inches thick, 112 bags of 60lb at 5″ thick, 135 bags of 60lb at 6″ thick, 68 bags of 60lb at 3″ thick, and 45 bags of 60lb at 2″ thick. Conclusions:-. , Enter the number of 8 inch x 2 inch x 4 inch bricks or 8 inch x 8 inch x 16 inch blocks you plan to use for your project. The calculator will indicate the number of 60 or 80 pound bags of QUIKRETE® Mortar Mix you need to construct your project with a 3/8 inch mortar joint., How much concrete do I need for an area of 8 ft x 8 ft x 6" depth? 1.185 cu. yds. How many concrete bags would I need for a 8 ft x 8 ft x 6" slab? 54 x 80lb Concrete bags. How much does it cost to pour a 8'x8' x6" slab?, Wall (sq ft) Block Size. 8 inch 12 inch. Request a Quote. Bags Required =. (add approx. 5% to the total for waste) Text Verification. Our concrete block calculators provide guidance to determine building materials required for construction projects. Try it out today!, Just divide the total weight needed by the weight in each bag. Example: The coop slab needs 6,666 pounds of dry concrete. You found a good price on palletized 80-pound bags of fast-mix concrete. Dividing 6,666 by 80 produces the rounded up number of 84. So, for the slab, you need 84 bags (or two pallets) of 80-pound concrete., Step 1: Build the Concrete Slab Frame. Use 2-by-4 lumber to build a wood frame of the desired size and set it in place to mark the area. Drive landscaping stakes into the ground to mark the outside corners of the frame., How many 40lb bags of concrete do I need for a 8×8 slab. As per general practices, generally you will need approximately 71 bags of 40lb (pounds) of premixed concrete for a 8×8 slab at 4 inches thick, 89 bags of 40lb at 5″ thick, 109 bags of 40lb at 6″ thick, 54 bags of 40lb at 3″ thick, and 36 bags of 40lb at 2″ thick. Conclusions:-. , Otherwise, simply type your dimensions of the stone into the calculator. Our bulk material calculator is a powerful tool that will help you calculate the volume of stone required. In addition, if you know the density of the stone and cost per unit mass/volume, then you can also calculate the total cost. Coupled with a little preparation, this ..., How many bags do I need? The amount of concrete you need varies by project. One 80lb-bag covers an area of about 2 square feet, for a slab 4 inches thick. Two 60lb-bags of concrete cover an area of about 2 square feet for a slab that is 6 inches thick. How much is a truckload of concrete? A truckload of concrete can usually hold a maximum of 10 ..., So, for a 4-inch slab you'll need 0.99 cubic yards, or 26.67 cubic feet (45 80lb bags), a 3-inch slab requires 0.74 cubic yards, or 20 cubic feet (34 80lb bags), but a 2-inch slab requires 0.49 cubic yards, or 13.33 cubic feet (23 80lb bags). How many bags of concrete do i need for a 8×10 slab at 2 inches thick, Quikrete's calculator eliminates the guesswork: Just enter the square footage for the slab, and it will crank out the size and number of bags of concrete mix for either a 4-inch- or a 6-inch ..., Lay a sheet of 6 mil plastic on your garage floor. Build a small square form from wood that will hold the concrete. Lay this form on the plastic. Mix the bag of concrete mix with the required water and mix until it's a uniform texture. Remember, you can always add more water. Add the water in stages as you mix., For a shed with dimensions of 8 by 6 feet, you will need 16 cubic feet of concrete to pour a four inches deep slab. That is equal to around 27 80-pound bags of concrete. That's over two thousand pounds of concrete! And 8×6 is on the small side. For a larger shed, you'll probably need several thousand pounds of concrete to cover the entire ..., (For reference: A standard 80-pound bag yields 0.60 cubic feet of concrete, while a 60-pound bag yields 0.45 cubic feet, and a 40-pound bag yields 0.30 cubic ft.) Photo: hydetools.com DON'T just ..., Concrete Footings Calculator. Input length, width and depth of the area. Click the button to calculate the volume of concrete and man-hours (not including mixing) needed for this job. This calculator is to be used as an estimating tool only., Total Length 240 m. Includes 10% waste / lap. Exact Spacing. Length 600 mid 300. Width 600 mid 500. 40 x 6000 Lengths. $ (Enter Cost per Bar) Approx Weight 213.1 kg. Slab Volume 6 m³., How many bags of concrete do i need for a 12×12 slab at 4 inches thick. At 4 inches thick, for a 12×12 slab you would need approximately either 80 80-Pound, 107 60-pound, or 160 40-pound bags of premixed concrete. If you measure in yards, 1.78 cubic yards (or 48 cubic feet) of concrete will be required., One yard equals 3 cubic yards or 2760 cubic inches; one bag of cement is 765 cubic inches. – With these numbers, each bag of cement is about 1/4th of a cubic inch so there would be 160 bags per cubic yard and four rows across. So if you had a project that needed about 50 yards of concrete, it would take 8000 (160 x 50) bags of cement!, Step 1: Size of slab. Please enter the dimensions of the concrete slab. Widthm. Lengthm. Thicknessmm. CancelNext. Note: Consult a concrete professional for advice on the thickness of your slab as it will depend upon the load that will be placed on the slab. A minimum thickness for a non-load bearing slab would be 75mm., A 10 x 10 slab that's 5 inches thick needs 1.6 cubic yards or (72) 80lb bags of concrete. A 10 x 10 slab that's 6 inches thick needs 1.85 cubic yards or (84) 80lb bags of concrete. A 10 x 10 slab that's 7 inches thick needs 2.2 cubic yards or (99) 80lb bags of concrete., For example, if one 80-pound bag of concrete mix yields 0.6 cubic feet, you can calculate the number of bags required by first converting the volume in cubic yards to cubic feet (1 cubic yard = 27 cubic feet) and then dividing the total cubic feet by …, A: Quikrete Concrete Mix 60 lb. is designed for pouring concrete 2 in thick or more and building or repairing anything out of concrete. We do not suggest mixing it with sand and pouring it between patio stones. For more detailed product selection please give Quikrete Customer Support a call (800)-282-5828. by., Typically, one 80lb bag of concrete can cover around 0.6 cubic feet, and 1 Yard = 27 cubic feet. So 80lb bags of concrete (27 ÷ 0.6)= 45 80lb bags. To calculate the number of bags needed, you will need to divide the total cubic footage of the area by 0.6. For example, if you have a yard that measures 100 square feet and you want to pour a 4 ..., 0.444 cubic yards (12 ft 3) Concrete needed. 0.80 tons (1,596 lbs) Concrete needed (bags) 19.95 bags of 80 lbs each, or 26.59 bags of 60 lbs each, or 39.89 bags of 40 lbs each. get code. Quick navigation: Essential concrete basics for using a concrete calculator. Calculating how much concrete you need. , The amount of concrete you need for a 3×5 slab depends on how thick it will be. So, for a 4-inch slab you’ll need 0.185 cubic yards, or 5 cubic feet (9 80lb bags), a 3-inch slab requires 0.139 cubic yards, or 3.75 cubic feet (7 80lb bags), but a 2-inch slab requires 0.208 cubic yards, or 2.5 cubic feet (5 80lb bags)., Following are the formulas to calculate how much concrete you will require for a circular slab: 3.14 x r (feet) x r (feet) x T (inches) ÷ 12 = cubic feet of concrete (CF) Number of bags of concrete needed: CF ÷ 0.45 = number of 60 lb. bags CF ÷ 0.6 = number of 80 lb. bags Number of cubic yards of concrete needed:, A solid, unbroken slab of concrete weighs about two tons (or 4,000 pounds) per cubic yard. Breaking up concrete roughly halves the total weight per cubic yard to about one half ton (or about 2,000 pounds). How many bags of concrete are in a yard? To produce one yard of concrete, you’ll need to use about 45 80-pound bags (or 90 40-pound bags).