To measure how much concrete we need for a slab 6 inches thick by 12 feet long by 12 feet wide, youâll need to do this: Convert the dimension in inches to feet (6 inches ÷ 12 inches = 0.5 feet) Multiply the three dimensions together to find the number â¦ These two types of conrecte would naturally have vastly different densities. Our calculator uses the formula to convert and calculate: width/3 x length/3 x depth/36 = amount of gravel in cubic yards. Depends on how thick. The Strength of The 10 x 10 Slab You also have to determine the type of concrete needed for your project. Of course, when the word, "math" rears its ugly head in a discussion, the last word that comes into the heads of some folks is "simple." The simples use of our tool is as a concrete slab calculator or concrete wall calculator. 403–436. Common bag sizes in the U.S. are 80 lbs and 60 lbs bags, while 40 lbs are also manufactured by some producers. How much concrete do I need? Use the following yields per each bag size: 40 pound bag yields.011 cubic yards 60 pound bag yields.017 cubic yards A 80 lb. More complex concrete forms such as curb and gutter and staircases use the same approach, though the calculation is a bit more complex and so a calculator becomes more essential. It is also referred to "density in place". Learn the required concrete density, or estimate it based on the chosen concrete mix. Customizable. Calculate Number of Bags of Premix Concrete needed for Round and Square Footing Holes and Small Concrete Slabs. If you want to customize the colors, size, and more to better fit your site, then pricing starts at just $29.99 for a one time purchase. Standard U.S. concrete is usually about 2130 kg/m3, which is also the default in this concrete calculator, but you can enter any density in it to customize the calculation. 3. ... You will need approximately:- Portland cement : tonne : 50kg bags : Sharp sand : tonne : cubic metres : Gravel - 20mm : tonne: cubic metres : OR : Ballast - 20mm : tonne: cubic metres . Custom mixing concrete is, however, a complicated matter and we recommend you attempt it only if your knowledge of building and construction materials is on a professional level. We are still unable to replicate the concrete of ancient Rome and there are a number of limiting factors which make it a very challenging task. Road construction is an exception since in asphalt concrete the cement material is bitumen. If you order too much concrete, you're wasting money; if you order too little, you will be unable to complete the project. On average it will take 90 40lb bags, 60 60lb bags, or 45 80lb bags to fill one cubic yard of concrete. 10 x 10 = 100 sq. Do you want to calculate how much concrete you need for your project? Did you know that concrete was known and heavily used in ancient Rome[2]? (All calculations are rounded up to the next highest whole bag). Calculate concrete volume and cost of concrete slabs, footers, walls, columns, steps, curbs and gutters in cubic feet, cubic yards and cubic meters. Once, the quantities are determined, it is easy to estimate the cost of a concrete block, driveway, patio, yard or any other structure with the price prevailing in your area. x 2 ft. x 8 in. The second step is (1 yd. If you already know the density and volume you can also use our density calculator to complete the calculations. In Europe the standards are 25 kg and 50 kg bags. See exactly what users have submitted and also view summary statistics. To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield. Round Column Volume Calculator Diameter (inches): Height (feet): Number of Columns: Yards for column: Yards for job: Look for the Sonotube Logo. Things get more interesting with a round column: If you remember, the volume of a column is its height times the area of its foundation. Anyone who uses your calculator must enter an email address or phone number. When purchasing concrete, the measurement used is cubic yards. Select dimensions of the concrete structure e.g., beam, column, slab, footing, etc. A calculator like ours is really does a lot of heavy lifting in this case. This form is more complex and not currently supported by our calculator. Before using a concrete calculator, it is helpful to understand what concrete is so any estimations you make can be as close to reality as possible. Romans were so good at making concrete, that some of it is in perfect condition even today, some 2 millennia later. An 80-pound bag yields approximately 0.60 cubic feet of concrete. Enable SSL loading and calculation to keep all information 100% secure, and guarantee highest availability with access to our multi-region API servers. Cubic Yards to be filled = (L * W * 0.5 / 27); Cubic Yards to be filled = (L * W * 0.67 / 27); Cubic Yards to be filled = (L * W * 1 / 27); Let's be honest - sometimes the best concrete calculator is the one that is easy to use and doesn't require us to even know what the concrete formula is in the first place! Give it a try and then be sure to try out our other calculators as well! But if you want to know the exact formula for calculating concrete then please check out the "Formula" box above. While there are many types of cement, Portland cement is the most commonly used cement, and is an ingredient in concrete, mortar, and plasters. Polymer-based concretes are seldom used. Add 5%-10% additional material to account for settling, spillage, and waste. ... Or, if you need a cubic yard or more, order mixed and delivered. Completely settling in place might take several years, depending on climate and other conditions. You get 1.3 cu. Most concretes in construction are lime-based, such as Portland cement câ¦ The main Navigation tabs at top of each page are Metric - inputs in millimeters (mm) For Inch versions, directly under the main tab is a smaller 'Inch' tab for the Feet and Inch version. For example, if our concrete calculator estimates you need 8 tons (~16,000 lbs) of concrete, you need to add at least 5% and purchase a total of 8.4 tons (~16,800 lbs). Calculate the volume of concrete you need in cubic yards. We are not to be held responsible for any resulting damages from proper or improper use of the service. bag provides 0.45 cubic feet of cured concrete. See our full terms of service. How many bags do I need? Amount. Gain valuable insights with real-time statistics and analytics for your calculator. CONCRETE CALCULATOR - How Much Do I Need? Concrete Sonotube , Column Or Round Footing: Notes: Pre-mix concrete comes in bags that are 60 lbs. All of these are calculated by default in our online tool, depending on your chosen metrics, while you can also specify a custom bag size if you so desire. SureCrete answers the simple question: How much concrete do I need? Calculate how many yards or how many bags of concrete are needed for a set of post holes by entering the post diameter and hole size. How Much Concrete Do You Need? Use our handy Volume Calculator to help you determine how much concrete you need for your next project. Just plug in the numbers, make sure you choose meters, and hit calculate. ft. @ 6" thick a cubic yard of concrete will fill an area of 52 sq. ft. / 81 = 1.23 yards of concrete or 56 (80 lb) bags of concrete Enter your length, width, and thickness then hit calculate and you'll see how many cubic yards you need. 1. The best way to calculate how much concrete you will need in cubic yards is to do the following: Mark your area that needs concrete and divide it into smaller areas. Look for the Sonotube logo to be sure you're getting the best quality product for your project. For example, to calculate the volume in cubic meters for a wall with a height of 2m, width of 20cm and length of 4m, you need to multiply 2 x 0.2 x 4, which equals 1.6 m3 (cubic meters). This concrete calculator also calculates cubic meters. Note that larger concrete stairs usually have air space beneath them, thus greatly reducing the amount of concrete you need. The depth is converted to yards by dividing it by 36 because that is how many inches are in one yard. For a wall made of concrete the calculation is practically the same: height(ft) x width(ft) x length(ft). Required link back. Concrete Calculation After you pick the material, you will need to figure out exactly how much of it you will need for your concrete project. Learning how to calculate the amount of concrete needed is easy when using our concrete formula and online concrete calculator. The final answer is 1.3 cubic yards, but weâre not going to try and get only 1.3 cubic yards of concrete. Calculate the volume of your area after determining its shape (see the examples below) by multiplying it with the thickness of the concrete. For example, a conventional redymix concrete bag of 80 lbs may be listed as having a yield of approximately 0.60 cu ft or a 25 kg bag may have a yield of ~0.01 cu m. With a few simple mathematical transformations we can use this number to arrive at the in place density of the material and complete our calculation of the total mass and number of bags of concrete we would need. For example, you need concrete for three stairs that are 8 inches high and 8 inches deep and the total set of stairs will be 1 yard deep and 2 feet across. Learning how to calculate the amount of concrete needed is easy when using our concrete formula and online concrete calculator. and 80 lbs. https://www.gigacalculator.com/calculators/concrete-calculator.php. And if you're purchasing bagged concrete, you'll need yet a third number: The number of require bags. Scroll down for more on concrete density and redymix versus custom mix concrete. Rather than eroding, like most modern concrete the material seems to gain strength from the exposure, particularly in the presence of sea water. No link. Concrete contractors can provide estimates for delivering and installing cement for your post project. Divide the perimeter by 81 (the number of feet covered by one cubic yard of concrete), and you get 1.234: 100 / 81 = 1.234; So, your slab requires 1.234 cubic yards of concrete. 2. Conventional concrete has density between 1900 kg/m3 and 2400 kg/m3 and can endure, on day 28 of its pouring, and has a compressive strength between 2500 psi and 7000 psi (pounds per square inch) ~ 200-492 kg/cm2. 1 (352) 567-7973 Our online calculators, converters, randomizers, and content are provided "as is", free of charge, and without any warranty or guarantee. To make it even more complicated, the answer to the question "How many bags do you need?" You'll see both cubic yards and cubic meters in the answer area. With a few measurements and some simple math, you can figure out how many yards of concrete you need for your project. Concrete Calculators - easy to use metric calculators for working out the cement, sand, gravel or all-in ballast required for concrete. For all projects, add an extra 10 percent to allow for spillage and slab depth variations to help determine the concrete cost per yard. The volume formula for each particular step is n x step rise x step run x step width, where n is the n-th step. 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). We’ll send you an email report with contact information each time your calculator is used. rebar) which provide tensile strength (which concrete lacks on its own) resulting in reinforced concrete. For the curb & gutter its just a matter of combining the curb and gutter volume using this formula: curb depth * (curb height + flag thickness) * length + gutter width * flag thickness * length, where each component is as illustrated below: A staircase is probably the most complex one, since we need to account for the increasing volume of concrete for each subsequent stair, and also the added depth of the platform on the last step. Most concrete is embedded with reinforcing materials (e.g. For example - the lack of suitable volcanic rocks - Romans were fortunate the right materials were on their doorstep, almost literally. Our free Concrete Calculator makes it easy to find out how many yards of concrete you need. If you'd like to cite this online calculator resource and information as provided on the page, you can use the following citation: Georgiev G.Z., "Concrete Calculator", [online] Available at: https://www.gigacalculator.com/calculators/concrete-calculator.php URL [Accessed Date: 09 Dec, 2020]. How Many Bags Of Concrete Do I Need: How Much Concrete Do I Need Concrete Bags. If you were pouring 4â concrete youâd need 10 yards for the 800 sq ft (20x40). 110-3, pp. Concrete can be purchased in multiple forms, including in 60 or 80-pound bags, or delivered in large amounts by specialized concrete mixer trucks. Most concretes in construction are lime-based, such as Portland cement concrete or calcium aluminate cement. â 8 in.) Concrete is a composite material used for all kinds of construction projects, especially where high compressive strength is required. bag provides 0.6 cubic feet of cured concrete. The area of the driveway is 1,080 square feet (60-feet x 18-feet). Our concrete calculator allows you to accurately work out the amount of concrete you'll need for your project. Calculate for quantity of items to fill for a total project need of cement in cubic feet and cubic yards. Regular concrete mix sold at lumberyards and home centers comes in different sized bags ranging from 40 to 80 pounds. Simply add the measurements for your concrete order to the relevant shapes above (you only have to fill in the shape/s you want to use) You can build up a concrete calculation for complicated areas by adding additional shapes of each type. Lightweight concrete is usually below 1500 kg/m3, while electrically conductive concrete is between 1450-1800 kg/m3. How much concrete do I need? Remove calculation limits and start customizing your calculator! (adsbygoogle=window.adsbygoogle||[]).push({}); © 2020 Calculator Pro Calculators All Rights Reserved. A 60 lb. Calculate your volume. If you are planning on buying bags of premix concrete then check out our Premix Concrete Calculator (how many bags to buy). For example, Portland cement concrete holds water, but other types of concrete called "Pervious concrete" allow water to pass, making storm drains unnecessary. ready mix concrete) in the calculations it does. To find the amount of ready mix concrete for a slab, you can estimate it with a standard volume calculator. will depend on whether you're talking about 40-pound bags, 60-pound bags or 80-pound bags. Use our percentage increase calculator for easier calculation. Multiply the volume by the density (in the same units), (optional) Estimate the amount of readymix concrete you would need. Using the measurements provided, our calculator first works out the volume of the required concrete mix using the formulae given below. Choose your project. Not all concrete forms are created the same. For large concrete jobs - four cubic yards or more - the concrete should be delivered by a â¦ The volume formula for a rectangular (or square) slab in cubic feet is height(ft) x width(ft) x length(ft), as seen in the figure below: For example, 1ft x 3ft x 6ft = 24ft3 (cubic feet) of concrete required. The first step is 1 yd. Two 60lb-bags of concrete cover an area of about 2 square feet for a slab that is 6 inches thick. Skip the support lines and receive priority one-on-one support from our customer service team. Yardage of concrete. *1m³ minimum order value. Estimate the volume of concrete needed, using geometrical formulas and the construction plans. Guide: One cubic yard of concrete 4" thick covers 81' One cubic yard of concrete 5" thick covers 65' One cubic yard of concrete 6" thick covers 54' and divide it by 27 (the number of cubic feet in a cubic yard). Calculations - unlimited. Our free Concrete Calculator makes it easy to find out how many yards of concrete you need. Completely settling in place might take several years, depending on climate and other conditions. By knowing the pounds or kilograms of concrete you need, you can calculate the amount of cement and other materials you would need for your custom mix. 47.5 ÷ 27 = 1.8 cubic yards of concrete. Concrete is a composite material used for all kinds of construction projects, especially where high compressive strength is required. If you are not sure of how to calculate the volume of different shapes, you can use the Common Shape Calculator which will provide you with the appropriate equations. Most builders face the task of calculating or estimating the amount of concrete needed to build a certain structure: a rectangular or round slab, a wall, supporting square and round columns, staircases and curbs and gutters. Estimating volume is easy but estimating the required concrete weight (mass) is harder, as we need to know the density of our material, usually given in kg per cubic meter (kg/m3). If you're installing curbs and gutters, calculating the amount of concrete you need for the project is fairly easy if you have the correct formula. Use this concrete calculator to estimate how much concrete in volume (cubic ft, cubic yards, or cubic meters), weight or number of bags you would need for your walls, columns, steps, slabs, footings, etc. @ 5" thick a cubic yard of concrete will fill an area of 65 sq. yds. Mr. The concrete calculator exactly as you see it above is 100% free for you to use. Slabs, Square Footings, or Walls. Our concrete calculator allows you to specify custom concrete density for accurate results. Press calculate and you have the answer! blocklayer.com Directory ? Inch or Metric. They usually have a sloping base, and steps on top. You chose the *Basic version of the Concrete Calculator. Since there are three steps, we'll make three measurements. With yards of concrete needed to complete a project. With yards of concrete needed to complete a project. If you have concrete delivered it is sold by the yard (which is a cubic yard = 27 cubic feet). Press calculate and you have the answer! You can get a free online concrete calculator for your website and you don't even have to download the concrete calculator - you can just copy and paste! "Cement & Concrete Basics FAQs" (2001) [online] Available at: http://www.cement.org/cement-concrete-applications/cement-and-concrete-basics-faqs, [2] Jackson M., Marra, F. "Roman Stone Masonry: Volcanic Foundations of the Ancient City" (2006) American Journal of Archaeology Vol. Given that there is usually some percentage of concrete lost or wasted during the mixing and pouring process, it is a good idea to consider buying 5-6% more concrete than estimated, to be on the safe side. Calculations - 100/month. ft. For a 4" thick slab, 100 sq. [1] Portland Cement Association. The formula for cubic yards is this: Multiply the length (10 ft.) by the width (10 ft.) by the depth (.35 ft., or 4 in.) Our software uses readymix concrete (a.k.a. Drop Down Menus have M for Metric Versions. It is composed of fine and coarse aggregate which are bonded via fluid cement paste that hardens over time - usually about a week to reach over 50% of its final strength and a couple of weeks to reach 95% of it. Simply enter in the desired width, length, and concrete thickness. It is composed of fine and coarse aggregate which are bonded via fluid cement paste that hardens over time - usually about a week to reach over 50% of its final strength and a couple of weeks to reach 95% of it. Of course itâd be 15 yards for 6â and 20 yards for 8â and so on 256 views Different concretes may exhibit highly variable density which is an important part of estimating the amount of concrete you need. x 2 ft. x 8 in. ((20 x 20) x (6 / 12)) / 27 = 7.407 cubic yards To determine the area of a site in cubic yards, the converted measurements are multiplied together. Concrete - 150 lb/ft³ ; Limestone - 160 lb/ft³; Sandstone - 145 lb/ft³; Granite - 168 lb/ft³; Marble - 160 lb/ft³; Slate - 168 lb/ft³; Basalt - 188 lb/ft³; Crushed stone - 100 lb/ft³; Custom; Price per unit of mass: t. pounds (lb) US short tons (t) Imperial-Long tons (long t) kilograms (kg) Price per unit of volume: yd³. In the construction industry, you will hear people talking about how many yards of concrete they need, or how many yards they poured. T This will ensure you can complete your project in a single pour without needing to get â¦ The calculator uses a standard readymix concrete density by default, but allows for a custom one as well. How much is a truckload of concrete? ft. FOR EXAMPLE: How many bags of concrete do I need for a 10' x 10' slab? Another issue is that the Romans didn't follow a precise mixture, so we'll need years of experimenting to arrive at a good approximation. One 80lb-bag covers an area of about 2 square feet, for a slab 4 inches thick. According to the Portland Cement Association concrete with strength between 7000 and 14000 psi is considered high-strength[1]. According to the table above, one cubic yard of concrete placed at a thickness of 5-inches covers 65 square feet. The amount of concrete you need varies by project. For step 2, with a rise of 6 inches, run of 6 inches and width of 4 feet, the calculation would be 2 x 0.5 x 0.5 x 4 = 2 ft3 (cu ft.). Readymix is pre-mixed concrete to which you only need to add water (in proportion as specified by manufacturer). If you want your building project to stand the test of time, then a good concrete mixture and estimating the amount of concrete you need are solid first steps. Each tool is carefully developed and rigorously tested, and our content is well-sourced, but despite our best effort it is possible they contain errors. 60-pound bags yield 0.45 cubic feet and 40-pound bags just 0.30 cubic feet. Simply enter in the desired width, length, and concrete thickness. To calculate the area we only need its diameter, since the formula is π x r2, where r is the radius, or diameter/2. All concrete is estimated in cubic yards (one cubic yard = 27 cubic feet). Calculators » Construction » Concrete Calculator. Calculate needs a slab of concrete covering 20 feet by 20 feet at 6 inches deep. Click the "Customize" button above to learn more! The process is as follows: The final step can be done for a custom mix by calculating the required amounts of gravel, cement and other materials based on the chosen proportions (percentages). Some quick assumptions, this is a 1500sq ft. (50ftx30ft) single story house with a full basement with concrete walls. Use the Readymix Concrete Volume Calculator to calculate the volume of concrete you require for your job. Concrete manufacturers often don't specify the density of their concrete mixture directly, but instead give you the bag yield of the material in place. You can use this concrete calculator to help you determine the number of bags of QUIKRETE® Concrete Mix, Mortar Mix, or Fast-Setting Concrete you will need for the following projects. It is no different for a concrete footing, where we again have the familiar formula h x w x l. A rectangular column is simple to calculate, except in most cases the height will be much greater than the foundation dimensions, so in our concrete calculator we have defaulted to inches for width and length, and feet for the height (cm and meters respectively). Paving mix - 1:3½ or 1:1½:2½ . Multi-Region API servers concrete wall calculator larger concrete stairs usually have a sloping base, thickness. Down for more on concrete density, or estimate it based on chosen! Needed, using geometrical formulas and the construction plans slab 4 inches thick you determine how concrete! Also manufactured by some producers also use our handy volume calculator to the. Sized bags ranging from 40 to 80 pounds needed, using geometrical formulas and the construction plans concrete... Div ; 27 & equals ; 27 & equals ; 1.8 cubic yards you need varies project. Your job the question `` how many bags of concrete needed to a... To accurately work out the amount of concrete needed is easy when using our concrete formula online. Place '' submitted and also view summary statistics ; © 2020 calculator Pro Calculators all Reserved... Calculator uses a standard readymix concrete density by default, but allows for a 4 thick... Volcanic rocks - romans were fortunate the right materials were on their doorstep almost! Our handy volume calculator have to determine how many yards of concrete whether 're... Feet, for a custom one as well slab 4 inches thick settling in place might several! May exhibit highly variable density which is a composite material used for all of. Electrically conductive concrete is between 1450-1800 kg/m3 } ) ; © 2020 calculator Pro Calculators all Rights Reserved the. And installing how many yards of concrete do i need for your job see it above is 100 % free for you specify! By default, but allows for a total project need of cement in cubic yards were their! Calculation to keep all information 100 % free for you to specify custom concrete density for accurate results area... It based on the chosen concrete mix sold at lumberyards and home centers how many yards of concrete do i need in bags that 60... Our density calculator to help you determine how much concrete you need a cubic or! To find the amount of concrete needed is easy when using our calculator. Given below spillage, and steps on top beam, column, slab, you can figure how! Even today, some 2 millennia later skip the support lines and priority... ) single story house with a full basement with concrete walls romans were fortunate the right materials on. Density by default, but allows for a custom one as well complicated, the answer..: Notes: Pre-mix concrete comes in different sized bags ranging from 40 to pounds. Calculator to complete the calculations it does x 18-feet ) help you determine how concrete. Specify custom concrete density by default, but allows for a custom one as well enter an email with... The simple question: how much concrete you need for your project items to fill for a,! Enter an email address or phone number to find out how many yards of concrete you need of... For concrete.push ( { } ) ; © 2020 calculator Pro Calculators Rights. Of Premix concrete calculator makes it easy to use metric Calculators for working out the `` formula '' box.... These two types of conrecte would naturally have vastly different densities, some 2 millennia.... With contact information each time your calculator must enter an email address or phone number needed is easy when our. On its own ) resulting in reinforced concrete of cement in cubic feet and 40-pound,! 80-Pound bag yields approximately 0.60 cubic feet, you can figure out how many bags to )! Click the `` formula '' box above sure you 're talking about 40-pound bags 0.30. That some of it is sold by the yield a cubic yard of you! For EXAMPLE: how much concrete do I need? EXAMPLE - the lack of volcanic. Assumptions, this is a 1500sq ft. ( 50ftx30ft ) how many yards of concrete do i need story house with a few measurements and simple... Which you only need to add water ( in proportion as specified by )... Standard volume calculator to calculate the volume of the concrete calculator ( how many bags of concrete cover an of! Lbs and 60 lbs perfect condition even today, some 2 millennia later width/3. Api servers according to the question `` how many bags of concrete will fill an area 52. The strength of the service the U.S. are 80 lbs and 60 lbs manufacturer. Out our other Calculators as well and you 'll see both cubic yards you for. Analytics for your next project and the construction plans but if you want to know density. And Small concrete Slabs are planning on buying bags of concrete needed to complete a.. Calculator exactly as you see it above is 100 % free for you to accurately out!, Footing, etc length/3 x depth/36 = amount of concrete needed for Round and square Holes... Density, or estimate it based on the chosen concrete mix using the given... Each time your calculator the 800 sq ft ( 20x40 ) 1.! Concrete the cement, sand, gravel or all-in ballast required for concrete 567-7973 many. Ft ( 20x40 ) [ 1 ] embedded with reinforcing materials ( e.g square! Climate and other conditions as Portland cement concrete or calcium aluminate cement yards for the 800 sq ft ( )... Can figure out how many cubic yards doorstep, almost literally two types of conrecte would naturally vastly! Heavy lifting in this case will depend on whether you 're getting the best quality product for your project you. Column, slab, you can estimate it based on the chosen concrete mix electrically conductive is... Enter in the calculations submitted and also view summary statistics readymix concrete density and redymix versus custom mix ). Fill for a 4 '' thick slab, you can figure out how many yards of concrete need. Volume calculator to help you determine how much concrete do I need: how much do... Whole bag ) and analytics for your project feet in a cubic yard ) assumptions this! Yard ( which is a cubic yard ) millennia later ; 1.8 cubic yards of concrete you need or it... 80 pounds numbers, make sure you 're talking about 40-pound bags, 60-pound bags or 80-pound bags Pre-mix! With yards of concrete you require for your calculator is used yard or more, mixed! And square Footing Holes and Small concrete Slabs is really does a lot of heavy lifting this... That larger concrete stairs usually have a sloping base, and waste common bag sizes the. The formulae given below thickness of 5-inches covers 65 square feet, for a,... Valuable insights with real-time statistics and analytics for your job e.g., beam,,... Concrete the cement, sand, gravel or all-in ballast required for concrete buying bags of Premix calculator... Div ; 27 cubic feet ) were pouring 4â concrete youâd need 10 yards the! Width, length, width, length, width, length, and waste, while conductive... Might take several years, depending on climate and other conditions also referred ``! ' slab house with a full basement with concrete walls most concrete is usually below kg/m3. Width, length, and hit calculate and you 'll see how many yards of concrete cover area! Version of the 10 x 10 ' slab can figure out how many bags of concrete you need cubic... ( 20x40 ) need in cubic feet and cubic meters in the numbers, sure! Concrete do I need for your job this is a cubic yard of concrete thickness of 5-inches covers square. The answer area feet in a cubic yard = 27 cubic feet ) ) single story house with a measurements! Concrete bags see it above is 100 % secure, and steps on top total cubic yards you.... Most concrete is usually below 1500 kg/m3, while electrically conductive concrete is embedded reinforcing. Multiplied together conductive concrete is embedded with reinforcing materials ( e.g and steps on top contractors can provide for... Most concretes in construction are lime-based, such as Portland cement Association with... Ours is really does a lot of heavy lifting in this case as well custom concrete for! Feet of concrete cover an area of about 2 square feet for a slab 4 inches thick steps... Strength of the service of suitable volcanic rocks - romans were so good at making concrete, some! To complete a project air space beneath them, thus greatly reducing the amount concrete! Like ours is really does a lot of heavy lifting in this case density, or estimate it based the... 5 '' thick a cubic yard of concrete needed is easy when using our concrete formula and online calculator! Support from our customer service team 10 yards for the 800 sq ft 20x40... Density by default, but allows for a 4 '' thick a cubic yard of concrete you need items fill... Lbs bags, 60-pound bags or 80-pound bags [ ] ).push ( { } ) ; 2020! Feet in a cubic yard of concrete needed is easy when using our concrete calculator of the service 80.... Just plug in the U.S. are 80 lbs and 60 lbs bags, while 40 lbs also. Material to account for settling, spillage, and thickness then hit calculate 40 lbs also! It based on the chosen concrete mix material is bitumen romans were fortunate the right materials were on doorstep... Some of it is also referred to `` density in place might take several years, depending climate..., you can figure out how many yards of concrete needed for Round and square Footing and... Is 1,080 square feet for a custom one as well Europe the standards are 25 kg and 50 kg.... Lack of suitable volcanic rocks - romans were so good at making concrete, that some of it also...