How many bags of concrete for 8x8 slab

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.

Measure the recommended water amount (each 80-pound bag of concrete mix will require about 3 quarts of water). Step 3. Pour approximately 2/3 of the water into ...How many concrete bags would I need for a 32 ft x 32 ft x 6" slab? 851 x 80lb Concrete bags. How much does it cost to pour a 32'x32' x6" slab? Ready-mix costs approx $2,069.17. How much does it cost to hire a contractor to concrete a 32'x32' x6" slab? A pro costs between $5,120.00 and $10,752.00. How do you calculate concrete volume?This concrete calculator allows you to estimate how much concrete you need for a specific area and how many bags of concrete are required for this space, …Concrete Calculator. Concrete Calculator. Use our concrete calculator to get a rough estimate of how much concrete you may need for a job. Select the type of work you are performing and insert the dimensions, or request a quote from our experienced concrete estimators.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.With a brief look, a 15x30 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 ...Here are the steps you can follow to use our thinset calculator to find out how much thinset you need: Enter the length and width of the area you are working on. However, if you already know your area, you can also input the number directly into the Total area to be tiled field. Choose the tile size you are going to use.To get this result: Calculate your patio's total area by multiplying its dimensions: patio area = 12 ft × 12 ft = 144 ft2. Determine the area of a single paver: paver area = 16 in × 16 in = 256 in2. Divide the patio area by the paver area: patio area / paver area = 144 ft2 / 256 in2 = 144 ft2 / 1.77 ft2.

Upvote. Bricks, Masonry, Cinder Block, Paving & Walking Stones, Asphalt and Concrete - Pouring a 12'x16'x4" slab with bags of concrete. - I am pouring a slab that is 12'x16'x4 inches. It's about 2.37 yards or 130 60lb bags. The homeowner bought the bags months ago and can no longer return them.Ans. Materials required are 7 nos. of 50 kg bag of cement, 0.42 m 3 of sand and 0.83 m 3 of stone aggregate. This is a free online tool by EverydayCalculation.com to calculate …Divide the resulting number by 27 to find cubic yards. The volume of concrete required for a 10- by 10-foot slab depends on the diameter of the slab. For a 4-inch slab, either eight 60-pound or six 80-pound bags are required, while for a 6-inch slab, either 12 60-pound or nine 80-pound bags are necessary.How Much Concrete Do I Need? Use our concrete calculator to determine how many bags of concrete are needed to get your simple slab of concrete built. Simply enter the width, length, and depth of the area. Then, depending on what size bags are available, you will know the amount needed for your project. Width (ft)9 Pour the slab. Mix up the concrete in a wheelbarrow and pour it into place. Make sure you pour at least 40mm of concrete on top of the steel mesh. To remove any air holes from the fresh concrete, give each side of the box a few good taps with a hammer.

Using a concrete calculator is an easy and efficient way to determine how many bags of concrete you need for your project. The calculator takes into account the size of your project and the thickness of the concrete to give you an accurate estimate of the amount of concrete you’ll need. By using a concrete calculator, you can save yourself ...Concrete Bag Calculator. A quick and easy way to calculate the volume, weight, and number of bags of concrete. Perfect for slabs, walls, columns, tubes. Concrete Bag Calculator. Slabs or Walls. Length (l) in. Width (w) in. Thickness or Height (h) in. Quantity Calculate. Calculation Result. 0.009 cubic feet or 0.000 cubic yards or 0.000 cubic ...How many concrete bags would I need for a 32 ft x 32 ft x 6" slab? 851 x 80lb Concrete bags. How much does it cost to pour a 32'x32' x6" slab? Ready-mix costs approx $2,069.17. How much does it cost to hire a contractor to concrete a 32'x32' x6" slab? A pro costs between $5,120.00 and $10,752.00. How do you calculate concrete volume?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. With a brief look, a 26x8 area at 6 inches deep, you would need approximately 5.47 tons or 3.85 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 208 sq ft area, this may roughly cost $116. ...

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How much concrete do I need for a 24×24 slab? For a 24×24 slab, you would need approximately 11.6 cubic meters of concrete. However, this amount may vary depending on the thickness of the slab. How do I calculate how many cement bags I need? To calculate how many cement bags you need, divide the total amount of concrete required (in cubic ... With a brief look, a 15x15 area at 6 inches deep, you would need approximately 5.92 tons or 4.17 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 225 sq ft area, this may roughly cost $126. ...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 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′.

September 20, 2023 by GEGCalculators. A typical mix for 30 MPa concrete comprises 1 part cement, 2 parts fine aggregate (sand), and 3 parts coarse aggregate (gravel or crushed stone). The water-cement ratio is approximately 0.45-0.50 parts of water per part of cement. This mix results in concrete with a compressive strength of about 30 ...Apr 26, 2024 ... We need 6.28 cubic yards (4.8 m3) of cement, and our producer sells cement in bags weighing 60 lb (25 kg) with a density of 150 lb/cu ft (2400 ...With a brief look, a 26x8 area at 6 inches deep, you would need approximately 5.47 tons or 3.85 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 208 sq ft area, this may roughly cost $116. ...The first device on offer at Harbor Freight is the Bauer 4 cu. ft. cement mixer.The mixer's product description says it's supposed to be able to handle up to two 80-pound bags of concrete mix in a ...How many bags of concrete do i need for a 2×2 slab. The amount of concrete you need for a 2×2 slab depends on how thick it will be. So, for a 4-inch slab you'll need 0.049 cubic yards, or 1.33 cubic feet (3 80lb bags), a 3-inch slab requires 0.037 cubic yards, or 1 cubic feet (2 80lb bags), but a 2-inch slab requires 0.025 cubic yards, or 0.66 cubic feet (1 80lb bags).Here's are calculation steps to find out number of cement bags required to make 1m3 of concrete with 1:2:4 mix ratio:-. Estimate cement quantity: Volume of cement = 1.54×1/7 = 0.22m3. Cement quantity in kg = 0.22m3 × 1,440 kg/m3 = 317 kg, and cement quantity in bags: 317/50 = 6.34 x 50 kg bags, or 317/25 = 12.68 x 25 kg bags. Estimate sand ...#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...Step 7: Calculate Bags of Concrete: Each 80-pound bag of concrete mix typically yields about 0.6 cubic feet of concrete when properly mixed. To find the number of bags needed, divide the total cubic feet by the yield per bag: 32 cubic feet ÷ 0.6 cubic feet/bag = approximately 53.33 bags; Step 8: Round Up:Here's how the calculation works: Volume = 0.25 x 3.142 x (2 x 2) x 0.2. Volume = 0.6284m3. General Concrete Density = 2400 kg/m3. If we multiply the 0.6284m 3 volume figure by the 2400 kg/m 3 density figure, we find that the total weight of concrete needed for the round slab is 1,508.16 kg or 3,324.99 lbs.

CLASH of the CONCRETES Dry Pour Concrete vs Wet Pour DEATHMATCHhttps://www.youtube.com/watch?v=U0tyNF1xJZw&ab_channel=renettoDry Pour Concrete vs Wet Pour Co...

Determine the width, length, and depth of the area you want to concrete. Multiply width by length (this = Square Footage) Convert depth from inches into feet by dividing by 12. Now multiply the square footage (width x length) by the converted depth (depth inches / 12) This is the total cubic feet needed. To convert into cubic yards, start by ... 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.One of the best mixture ratios for a concrete slab is 1 : 3 : 3 (cement : sand : stone), this will produce approximately a 3000 psi concrete mix. This mixing ratio is excellent for a shed slab, but it's also good for most concrete patios, footings, steps, and foundation walls. The proper mixture of water with the cement, sand, and stone forms a ...You can use this estimating tool as a concrete bag calculator. Once you enter the length, width and depth of the slab, Lowe’s concrete slabs calculator estimates the number of …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 …Let's say we need to make 10 concrete cylinder specimens for compressive strength testing of a new cement brand, and we decide to use concrete cylinders measuring 4 inches in diameter and 8 inches in height.We want to know if the new cement brand can reach a compressive strength of 2,900 psi using a 1:1.5:3 cement mix ratio.Here are the steps to find out how much concrete we would need for ...How much does 1 bag of concrete cover? The coverage area for 1 bag of concrete mix depends on the thickness of the application. A typical bag might cover around 0.25 square meters at a 25mm thickness. How many 40kg bags of concrete mix in a cubic meter? Around 25 bags of 40kg concrete mix would be needed to make 1 cubic meter of concrete.At 4 inches thick, for a 12×20 slab you would need approximately either 134 80-Pound, 178 60-pound, or 267 40-pound bags of premixed concrete. If you measure in yards, 2.96 cubic yards (or 80 cubic feet) of concrete will be required. Let's do calculation and proceeds following steps: 1. Convert 4″ thickness in feet = 4/12 = 0.333′.Circular Concrete Slab: Notes: Pre-mix concrete comes in bags that are 60 lbs. and 80 lbs. A 60 lb. bag provides 0.45 cubic feet of cured concrete. A 80 lb. bag provides 0.6 cubic feet of cured concrete. If you have concrete delivered it is sold by the yard (which is a cubic yard = 27 cubic feet). Following are the formulas to calculate ...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:-.

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Popular options include the Concrete Mix for larger slabs and FastSet Concrete Mix for smaller projects.. Next, input the square footage of your slab and select a thickness of either 4 inches or 6 inches. The calculator will tell you how many bags of the specific size bag you must purchase.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). Calculate the number of bags: Click the ... 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). As per general practices, generally you will need approximately 3.13 cubic yards or 84.48 cubic feet or 2.4m3 of ready mix concrete for a 16×16 slab at 4 inches thick. At 5 inches thick, for a 16’×16′ slab, 3.94 cubic yards or 106.5 cubic feet or 3m3 of ready mix concrete are required, while at 6 inches thick, 4.7 cubic yards or 128 cubic ...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.How many concrete bags would I need for a 9 ft x 13 ft x 6" slab? 98 x 80lb Concrete bags. How much does it cost to pour a 9'x13' x6" slab? Ready-mix costs approx $367.08. How much does it cost to hire a contractor to concrete a 9'x13' x6" slab? A pro costs between $585.00 and $1,228.50. How do you calculate concrete volume?The volume of concrete required for a 10- by 10-foot slab depends on the diameter of the slab. For a 4 inch thickness ...Thanks for watchingConnect with us ...Respirator and gloves – Cement dust can be hazardous so PPE up. Quick Cure Cement – I used Quikrete 5000 – 50 lbs. bags. All Purpose Gravel – Sand and gravel base. 2×6 or 2×4’s – For the concrete slab form.With a brief look, a 28x28 area at 6 inches deep, you would need approximately 20.62 tons or 14.52 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 784 sq ft area, this may roughly cost ...At 4 inches thick, for a 5×10 slab you would need approximately either 28 80-Pound, 38 60-pound, or 56 40-pound bags of premixed concrete. If you measure in yards, 0.617 cubic yards (16.67 cubic feet) of concrete will be required. Let's do calculation and proceeds following steps:With this concrete calculator (in cubic meters/yards & bags), you can calculate the volume or number of bags of concrete needed for slabs, footings, walls, stairs, columns, and more. ... Determine how many cubic yards of concrete or 80-lb bags are required for the following solid stairs project: Rise = 6″. Run = 12″. Platform = 30″. Width ... ….

To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield. Use the following yields per each bag size: 40 pound bag yields …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 be required. Let's do calculation and proceeds following steps: 1. Convert 3″ thickness in feet = 3/12 = 0.25′.I don't recommend ordering concrete online because the shipping can turn a $4.00 bag into a $20.00 bag. So, if your job requires 10 bags or less, even if it takes two trips, pick it up yourself. Be careful handling the concrete, though. The bags are very fragile.How many concrete bags would I need for a 4 ft x 8 ft x 4" slab? 17.7 x 80lb Concrete bags. How much does it cost to pour a 4'x8' x4" slab? Ready-mix costs approx $205.95.Quickly calculate concrete slab and footing pours by entering the depth, width and length to find the number of cubic yards or bags of concrete needed for your project. Give these calculations to your ready-mix supplier or use them to estimate how many 40, 60 or 80 lb. bags of concrete to buy.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.For a 1200 sq ft rcc roof slab casting at 5 inch thick, generally you will need 105 bags (around 5227 kg) of cement which is approximately equal as 128 in cubic feet or in 3.63 cubic meter by using 1:2:3 (cement: sand: aggregate) mix to gain 3000 Psi compressive strength of concrete in 28 days. Thus 105 bags of cement are required for 1200 sq ...00:00 - How many bags of concrete do I need for a 4x4 slab?00:40 - How thick should a concrete driveway be?01:13 - How much area does a bag of concrete cover...How many bags of concrete do I need for a 10×10 slab. For your 10×10 slab, you'll need about 2.67 cubic yards of concrete. This equates to approximately 72 bags of 80-pound concrete. So roll up those sleeves and get ready to mix, because with 72 bags, you'll be slapping down some serious concrete goodness!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 ... How many bags of concrete for 8x8 slab, We would like to show you a description here but the site won't allow us., http://www.calculated.com/me See how to use the Material Estimator calculator's built-in concrete bags function to get quick, accurate estimates for number ..., You will need 3 inches of gravel under a concrete slab that is 4 inches thick. More gravel is better, but 3 inches is the minimum amount of gravel you should have with a 4" slab. Use ¾" washed and screened gravel, then compact it to level., Round slabs; Columns; Stairs; Fence post holes. How To Use The Concrete Calculator. Simply input the appropriate figures of your intended construction, along with the suitable units, and then click ‘calculate’ to view the final volume figure. Note: Every concrete pour is different, and sometimes laying the mix on perfectly flat ground isn ..., Nov 30, 2021 - how many bags of concrete do i need for a 10x10 slab? depends on the size of the slab whether it is a 10×10 slab or 10×12 etc and the size of the concrete dry mix bag you have ordered from the company., concrete block costs = price per block × number of blocks. When it comes to estimating the mortar needed, a good rule of thumb is that three standard bags will typically cover 100 blocks. To calculate the number of such bags, you need to divide the number of blocks by 33.3: mortar bags estimation = number of blocks needed / 33.3, Decided I should do a project with 60 bags. Wasn't fun, but it got done. Then I came across Sakrete Maximizer. 80lb bag makes 60% larger quantity of mix than usual concrete mix. I did 44 bags for 10'X16' 3.5" slab. I absolutely love that concrete mix. So much easier to work with. I don't think I am going back to regular stuff., To determine how many bags of concrete you will need, divide the total cubic yards needed by the yields, at 4 inch thick, for a 4×5 slab you will need 0.244 yards of concrete, so number of 80lb bag of concrete = 0.244 ÷ 0.022 = 11 bags, No. of 60lb bag = 0.244 ÷ 0.017 = 15 bags & No. of 40lb bag = 0.244 ÷ 0.011 = 22 bags., At a minimum, you need a cement truck to deliver the concrete if you plan to DIY. 8x10 slab, 10" deep is 111 80lb bags of concrete. And that only gets you to the ground, if you go another 6 inches below ground thats 177 bags. You can't get all the concrete mixed and in the form with a small mixer., Concrete Slab Calculator for Slabs, Floors, Footings and Cylinders. This is a terrific concrete slab calculator for estimating how many cubic yards to order to complete your concrete slabs, concrete floors, concrete walls, and concrete footings. Just remember to add some extra concrete to your total order because running short is not an option., Respirator and gloves – Cement dust can be hazardous so PPE up. Quick Cure Cement – I used Quikrete 5000 – 50 lbs. bags. All Purpose Gravel – Sand and gravel base. 2×6 or 2×4’s – For the concrete slab form., So, for a ton (1000kg) of ballast, you would need approximately 166.67kg (1000 / 6) of cement. This is roughly equivalent to 6-7 bags of 25kg cement. How many bags of cement do I need for shed base? The number of bags of cement needed for a shed base depends on the size and thickness of the base., To convert the volume of cubic yards to cubic meters, multiply the volume in cubic feet by 0.0283. For example, if you have a 24' x 24' x 4" thick slab: Multiply 24 x 24 x (4/12) to get 190 cubic feet. Divide 190 by 27 to get 7.04 cubic yards of total concrete needed. Multiply 190 by 0.0283 to get 5.38 cubic meters of total concrete needed., QUICKRETE also has a useful calculator to determine how many bags of concrete you’ll need. We wanted a 4″ x 12′ x 8′ slab and used about 55, 80 lb. bags. Step 1: Mark the Location of the Shed. This shed will be placed on the property line and we used a laser distance measurer to ensure we had the right distance from the house., The best concrete mix for a slab is 3500 psi concrete poured 4-6 inches thick. Add reinforcement like fiber, rebar or wire mesh for more strength and to resist cracks. The mix I use to make 3500 PSI concrete is 1:3:2.5. 1 Part Cement, 3 parts stone and 2.5 parts sand. Use masons sand and smooth stones about an inch or so in size., How much concrete do i need for a 20×20×4 slab. How many bags of concrete do i need for a 8×8 slab at 2 inches thick. At 2 inches thick, for a 8×8 slab you would need 0.737 cubic yards or 19.92 cubic feet of concrete. If you use premix concrete, either 34 80-Pound, 45 60-pound, 54 50-pound, or 67 40-pound bags of premixed concrete will be ..., 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:-., The recommended water-to-concrete ratio is usually between 0.5:1 and 0.6:1. This means using 0.5 to 0.6 gallons of water for every 80 lb bag of concrete. Factors That Affect Water Requirements. As mentioned earlier, several factors contribute to the amount of water required to mix an 80 lb bag of concrete. Let's look at these factors in more ..., To produce one yard of concrete, you'll need to use about 45 80-pound bags (or 90 40-pound bags). Because of the time and labor required to prepare such a large ..., 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., Slab Length: Length of the concrete slab. - (in meters or feet) Slab Width: Width of the concrete slab. - (in meters or feet) Development Length: Length of rebar required for proper embedding into the concrete. 40 to 60 times the diameter of the rebar (in mm or inches) Bar Diameter: Diameter of the rebar. 8mm, 10mm, 12mm, etc. Bar Bend Angle, With a brief look, a 26x28 area at 6 inches deep, you would need approximately 19.14 tons or 13.48 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 728 sq ft area, this may roughly cost ..., How many yards of concrete do i need for a 24×24×4 slab. How many bags of concrete do I need for a 3×5 slab at 4″ thick. As per general practices, generally you will need approximately either You will need approximately either Eleven (11) 60-lb, or Nine (9) 80-lb, or Seventeen (17) 40-lb bags of Quikrete's or Sakrete concrete mix (0.183 ..., The calculator will indicate the number of 10.1 oz. tubes of QUIKRETE ® Polyurethane Concrete Crack Sealant or 10.1 oz tubes of Concrete Repair you will need for your project. Enter the Length of the Crack in Feet: For 1/4 inch Wide Joint by 1/4 inch Deep: Number of 10.1 oz Tubes: For 1/2 inch Wide Joint by 1/4 inch Deep:, Then add the totals of the smaller shapes together to get the concrete needed for the entire slab. For example, you need a slab of concrete that is 12 feet wide, 10 feet long and 4 inches thick. The math is: 12 ft. x 10 ft. x (4 in./12 in. per ft.) ft. = 12 x 10 x .333 = 40 cubic feet., For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags. If we add an extra 10%, that's an extra 8 60-pound bags or 6 80-pound bags. Whatever the size of your project, use the formula above to calculate how much concrete you'll need!, To use the concrete mix ratio calculator, follow these steps: Open the web page containing the calculator in a web browser. Select the desired mix ratio from the dropdown menu. The available options include C20 1:2:4 concrete mix calculator , C25, C30, C35, C40, and C45. Each mix ratio represents a specific combination of cement, sand, and ..., Step 7: Calculate Bags of Concrete: Each 80-pound bag of concrete mix typically yields about 0.6 cubic feet of concrete when properly mixed. To find the number of bags needed, divide the total cubic feet by the yield per bag: 32 cubic feet ÷ 0.6 cubic feet/bag = approximately 53.33 bags; Step 8: Round Up:, With a brief look, a 20x13 area at 6 inches deep, you would need approximately 6.84 tons or 4.81 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 260 sq ft area, this may roughly cost $145. ..., 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. , We'll assume each shed foundation is 6" deep with gravel. 8×12 storage shed - this is a popular small prefab storage shed size. 10x14x0.5 = 70; 70/27 = 2.6 cubic yards or 3.6 tons of gravel. 12×18 storage shed - this is a medium size backyard storage shed. 14x20x0.5 = 140; 140/27 = 5.2 cubic yards or 7.3 tons of gravel., Then add the totals of the smaller shapes together to get the concrete needed for the entire slab. For example, you need a slab of concrete that is 12 feet wide, 10 feet long and 4 inches thick. The math is: 12 ft. x 10 ft. x (4 in./12 in. per ft.) ft. = 12 x 10 x .333 = 40 cubic feet., 00:00 - How many bags of concrete do I need for a 4x4?00:35 - How many bags of concrete do I need for a 3 foot post hole?01:05 - How many bags of concrete do...