How many 60lb bags of concrete in a yard

Jan 7, 2021 · Shape. Dimensions (in ft.) x. x. Thickness. Calculate. Total Slab Area (in cubic yds): This concrete estimator will help you find out how much concrete you need by cubic yard. Plus, find how much 80lb and 60lb bags cover, estimate the slab area for triangular or octagonal shapes and more.

One cubic yard of bag concrete weighs about 3, 600 pounds. To find the number of bags of concrete per yard divide the 3,600 pounds by each bag weight. Here are the approximate quantities: 40lb bags: 3600/40 = around 90 bags. 60lb bags: 3600/60 = around 60 bags. 80lb bags: 3600/80 = around 45 bags. Dec 28, 2021 ... ... bag of 80 lb, 60 lb, 40 lb & 50 lb. A cubic yard means volume of material that cover 3 feet long by 3 feet wide by 3 feet high, so 1 yard is ...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. ... ∙ You should always purchase a little more concrete than you need. ∙ 60 lbs bags cost anywhere from ~$3 to ~$6. ∙ 80 lbs ...This concrete calculator will help you determine the volume of concrete you need in cubic yards, cubic feet, and cubic meters. It also calculates the number of 40lb, 60lb, or 80lb bags of concrete needed, and an estimated cost for the concrete. A large size premix bag of concrete weighs about 80lb (pound) and 90lb (pound). Medium size bag weighs about 60lb (pound) and small bag weighs 50lb (pound) and 40lb (pound). Weight of Ready mix concrete in dry condition is about 133 lbs per cubic foot which is approximately equal as 3600 lbs per cubic yard, or 2136 kg per cubic meter. How many 80 lb bags of concrete is in a yard. There are approximately 45 bags of 80lb (pounds) concrete is in a cubic yard. A cubic yard of concrete weighs around 3600 pounds, so, No. of 80 lb bags of concrete in a cubic yard = 3600÷80 = 45 bags. Thus, you will need 45 bags of 80 lb concrete to make one cubic yard.

So, in many cases, you will need to purchase bags. For the first example above, we can use the table below, to find the number of bags. In this case, you would need to buy at least eight 80 lb. bags and one 40 lb. bag (yielding a total of 5.1 cubic feet) of concrete to allow enough for extra. One 40lbs bag of concrete mix will yield approximately 0.30 cu ft. So it will take 68 bags to equal three quarter (3/4) cubic yard of concrete. Maths calculation, 3/4 cubic yard = 27×0.75 = 20.25 cu ft, No. of 40 lb bags = 20.25 ÷ 0.30 = 68 bags, thus you will need 68 bags of 40 lb concrete mix to make 3/4 yard of concrete.7.2 sq. ft. 90lbs. 0.675 cu. Ft. 1.48. 8.1 sq. ft. You have a bag of 90lb concrete you will need either, considering that the numbers of concrete bags differ for all sizes, such as 40lb, 50lb, 60lb, and the 80lb bags the number of the concrete bags necessary for one cubic foot can range from 0.6 to 1.25 per cubic foot. You have to …50lb bags 3.7 60lb bags 3.1 80lb bags 2.3 90lb bags 2.1 These amounts are for using the redi-mix bags. How many yards of concrete would it take to cover an area 28x 44 x 4?Number of Pre-Mixed Concrete Bags Needed: 40 pound bags: 50 pound bags: 60 pound bags: 80 pound bags: 94 pound bags: ... The calculator will automatically estimate how much concrete you'll need by volume (cubic feet, cubic yard, and cubic meters), as well as by bags of concrete mix. Note: This calculator will resize automatically to fit on your ...QUIKRETE 60 lb. Concrete Mix features a 4,000 psi average compression strength and a blend of cement, sand and gravel or stone. ... How many bags would I need for a 3 cubic yards slab. by Cindym123 | Aug 24, 2023. 0 Answer. Answer This Question. Q: How many bags would I need for a 3 cubic yards slab. by Cindym123 | Aug 24, 2023.

For 60lb bags, the standard measurement is approximately 0.017 cubic yards per bag . Multiply the total cubic yards by the cubic yards per bag to estimate the number of bags needed. Using the example of a 3.70 cubic yard slab, the number of 60lb bags would be 3.70 x 0.017 = 0.063 bags (rounded to the nearest whole number).A 60 lb bag of concrete yields approximately .45 cubic feet . There’s 27 cubic feet of concrete in a yard. If you divide 27 by .45 it equals 60 bags of concrete. How many square feet will a 60 lb bag of concrete do? @ 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.CONCRETE CALCULATOR [How Much Concrete do I Need?] Home. Calculators. Concrete Calculator. Slabs, Footings & Walls. Length: ft. Width: ft. Thickness: in. Quantity: Price per unit of volume: yd³. … One cubic yard of bag concrete weighs about 3, 600 pounds. To find the number of bags of concrete per yard divide the 3,600 pounds by each bag weight. Here are the approximate quantities: 40lb bags: 3600/40 = around 90 bags. 60lb bags: 3600/60 = around 60 bags. 80lb bags: 3600/80 = around 45 bags. Cost per Bag. A concrete slab 36" X 36" at a depth of 4", has a volume of 3 ft³ = 10 x 40 # bags. 10 Bags. Total Bag Weight 400 lb. Calculated at 133.3 lb per ft³ - Allow extra for waste. Pre-Mix Concrete Bag Calculator Calculated at 133.3 lb per ft³ - Allow extra for waste. Cubic Feet. Thus, you will need 90 bags of 40lb concrete to make one cubic yard. How many 60 lb bags of concrete in a cubic yard. There are approximately 60 bags of 60lb (pound) concrete per cubic yard. A cubic yard of concrete weighs around 3600 pounds, so, number of 60 lb bags of concrete in a yard = 3600÷ 60 = 60 bags.

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50lb bags 3.7 60lb bags 3.1 80lb bags 2.3 90lb bags 2.1 These amounts are for using the redi-mix bags. How many yards of concrete would it take to cover an area 28x 44 x 4?Coverage per Bag: 12 square feet; By inputting these values into the Sakrete Calculator formula, the calculation would be as follows: Amount of Sakrete (in bags) = (10 × 8 × 6) / 12 = 40 bags. This indicates that approximately 40 bags of Sakrete would be needed to complete the concrete slab based on the provided dimensions and … A large size premix bag of concrete weighs about 80lb (pound) and 90lb (pound). Medium size bag weighs about 60lb (pound) and small bag weighs 50lb (pound) and 40lb (pound). Weight of Ready mix concrete in dry condition is about 133 lbs per cubic foot which is approximately equal as 3600 lbs per cubic yard, or 2136 kg per cubic meter. Volume of an 80 pound bag in cubic feet = 80/133 = 0.6 cubic feet, volume in cubic yards = 0.60/27 = 0.022 cubic yards, and volume in gallons = 0.6 × 7.481 = 4.49 or rounded to 4.5 gallons. ... An 80 lb bag of concrete mix can make approximately 4.5 gallons of concrete. A 60 lb bag of concrete mix can make approximately 3.5 gallons of concrete.Concrete Volume; Cubic Yards: Cubic Meters: Cubic Feet: Pre-Mixed Concrete Weight; Pounds: Kilograms: Bags; 60 lb bags: ... 60 lb bags: 80 lb bags: Concrete: Laying the Groundwork for the Modern World - Guide Authored by Corin B. Arenas, published on June 14, 2021.May 1, 2024 · For projects that need less than 2 yards there is generally a delivery fee of $75-$100 added to the cost of the concrete. Bags of Concrete: Bags are packaged in 50, 60 and 80 pound sizes and each size bag includes enough concrete to cover a different sized area. 50-pound bag = .37 yard of concrete. 60-pound bag = .45 yard of concrete.

33 x .037 = 1.22 cubic yards. Essentially you are solving for volume and then converting to cubic yards. For concrete, the formula for volume is as follows: length x width x thickness. 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: A cubic yard of concrete weighs around 3600 pounds, so some 60lb bags of concrete in a cubic yard =3600/60= 60 bags. We know there are 27 cubic feet in one cubic yard. A concrete yard will cover around 108 square feet of area up to a standard depth of 3 inches for your slab and patio. 60 bags of 60 lb concrete are needed to make … Use our free online Premix Concrete Calculator to calculate exactly how many premix concrete bags you should buy for your concrete project. Just enter in the desired height, width, and thickness of your concrete project and then press the calculate button. The free concrete calculator will tell you exactly how many 40 lb, 60 lb, or 80 lb bags ... So, in many cases, you will need to purchase bags. For the first example above, we can use the table below, to find the number of bags. In this case, you would need to buy at least eight 80 lb. bags and one 40 lb. bag (yielding a total of 5.1 cubic feet) of concrete to allow enough for extra.How many 60 lb bags of concrete for 1 cubic foot? Approximately 1 bag: How much volume is in an 80-pound bag of Quikrete? 0.60 cubic feet (0.017 cubic meters) …With the given mix ratio, cured concrete is about 22 percent cement by weight. Thus, a 3,600-pound cubic yard contains about 800 pounds of cement, which comes out to 10 of the 80-pound bags of cement or 13.3 of the 60-pound bags.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...This calculator will convert cubic yards, or feet, into the equivalent number of forty, fifty, sixty, or eighty pound bags. Just enter the number of cubic yards or cubic feet of concrete you need for your project, to calculate how many bags you need to get the job done. The calculator rounds up to the nearest bag, so you’re sure to have enough.On average, it will take 90 40lb bags, 60 60lb bags, or 45 80lb bags to fill one cubic yard of concrete. How much does 4 yards of concrete cost? Each cubic yard of concrete costs $119 to $147 per cubic yard delivered.

2. Cubic feet: convert the weight to pounds to cubic feet by dividing by the density: 60 lb/ 133 lb = 0.45 cubic feet. So, a 60 lb bag of concrete is approximately 0.017 cubic yards or 0.45 cubic feet. 60lb bags of concrete mix is ideal for both structural and non structural application 2 inch thick or more, 60lb bag of Concrete Mix can be used ...

For 80-pound bags, each cubic yard requires approximately 48 bags, while for 60-pound bags, each cubic yard requires approximately 64 bags. This means that for a typical home project that requires one cubic yard of concrete, one would need around 48 to 64 bags of 60- or 80-pound concrete mix in addition to other necessary materials such as ...Cost per Bag. A concrete slab 36" X 36" at a depth of 4", has a volume of 3 ft³ = 10 x 40 # bags. 10 Bags. Total Bag Weight 400 lb. Calculated at 133.3 lb per ft³ - Allow extra for waste. Pre-Mix Concrete Bag Calculator Calculated at 133.3 lb per ft³ - Allow extra for waste. Cubic Feet.So, in many cases, you will need to purchase bags. For the first example above, we can use the table below, to find the number of bags. In this case, you would need to buy at least eight 80 lb. bags and one 40 lb. bag (yielding a total of 5.1 cubic feet) of concrete to allow enough for extra.Oct 22, 2023 ... After mixing 5 Pallets of 80 lb Bags of Quikrete, I found the 60 lb Bag concrete much, much easier to handle and I discovered another ...A 60 lb bag will yield .017 cubic yards of concrete, an 80 pound bag will yield .022 cubic yards. So to break this down you would need 78 60lb bags of concrete mix 61 80lb bags of concrete mix which accounts for the extra 10% that we discussed earlier.Here is how to calculate the required number of bags: First, you need to calculate the volume of the post hole. Volume = 1.96344 cubic feet or 0.07271 cubic yards. The second step is to divide the volume by the yield. For example, for a 60lb bag, 0.07271 / 0.01648 = 4.412, rounding up to 5 60lb bags.Do you know how to level a concrete floor? Find out how to level a concrete floor in this article from HowStuffWorks. Advertisement You want to lay some rather nice tiles over the ...60-lb High Strength Concrete Mix. Find My Store. for pricing and availability. 4509. Find 60 lb. concrete, cement & stucco mixes at Lowe's today. Shop concrete, cement & stucco mixes and a variety of building supplies products online at Lowes.com.

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Cubic Feet. Cubic Yards. Cubic Meters. Weight Needed. Number of 60-lb. bags/ Number of 80-lb. bags. A Practical Example. Recommended Use-Cases for a Concrete Calculator. Helpful Hints for a Worry-Free Concrete Pour. The Correct Amount of Water. Concrete Takes Time to Dry. Concrete is not cheap, and it is not light.You will need around one 25-kg bag of pre-mixed concrete to fill a foot height of an 8-inch Sonotube if you use 150 lb/ft³ concrete. To arrive at that bag number: Find the volume of a 1′ high 8" diameter column: Volume = π × (8 in)² × 12" / 4 = 603.2 in³ ≈ 0.3491 ft³. Calculate the equivalent weight of the column:Volume = 0.333 cubic yards; Now, we need to convert the volume to the number of 80 lb. bags. Each bag of concrete is typically measured in cubic feet, so we'll need to convert the volume in cubic yards to cubic feet: 1 cubic yard = 27 cubic feet; 0.333 cubic yards ≈ 0.333 × 27 cubic feet; 0.333 cubic yards ≈ 8.991 cubic feet 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 80-lb bags of concrete you’ll need. For some projects, you may want to know the volume of concrete you’ll need to pour. In addition to estimating how many bags of ... A cubic yard of concrete weighs around 3600 pounds, so some 60lb bags of concrete in a cubic yard =3600/60= 60 bags. We know there are 27 cubic feet in one cubic yard. A concrete yard will cover around 108 square feet of area up to a standard depth of 3 inches for your slab and patio. 60 bags of 60 lb concrete are needed to make 1 cubic yard of ...Buy 56 or more $3.40. 4000 psi average compressive concrete strength. Ideal for pouring concrete slabs and setting posts. Perfect for setting mailbox posts, fence posts, and lamp posts. View More Details. Product Weight (lb.): 60 lb. 60 lb. 80 lb. Unavailable at South Loop.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 …90 40-lb bags make 1 yard. 60 60-lb bags make 1 yard. 45 80-lb bags make 1 yard. For example, to approximate the number of 40-pound bags needed for a 7.71-yd 3 concrete slab, you will multiply 90 x 7.71, equaling about 694 bags needed. Quick Tip: It’s better to overestimate the amount you need so you don’t come up short. ….

A bag of 80 lbs concrete can cover 0.5 to 0.6 cubic feet of the surface. As you know that a cubic yard equals 27 cubic feet, you will need forty five 80Lbs bags of concrete to cover a yard surface. On the other hand, if you intend to go with smaller concrete bags, then it will take 60 bags of 60Lbs concrete to fill up a yard of surface. Next, we will fill in the dimensions in the first section. Then, in the data entry of concrete bags section, we will specify 80 pound bags, and leave the rest of the fields for the predefined values. In brief, the results show that this project requires almost 1 yard of concrete or 45 80-lb bags of pre-mixed concrete. Aug 10, 2023 ... How many cubic yards in a bag of concrete | Volume of a 80lb, 60lb, 40lb, 50lb & 90lb bag in yards. 56 views · 8 months ago ...more ... Cement bags needed: total cubic yards * cubic yards per bag. The standard measurements per bag for the three most common sizes are as follows: 40 lb bag: .011; 60 lb bag: .017; 80 lb bag: .022; Using the previous example of a 10 x 10 slab with a volume of 3.70 cubic yards, the number of bags you would need based on each bag size are as follows: Just enter in the desired height, width, and thickness of your concrete project and then press the calculate button. The free concrete calculator will tell you exactly how many 40 …Use our free online Premix Concrete Calculator to calculate exactly how many premix concrete bags you should buy for your concrete project. Just enter in the desired height, width, and thickness of your concrete project and then press the calculate button. The free concrete calculator will tell you exactly how many 40 lb, 60 lb, or 80 lb bags ...According to one source , a cubic yard of dirt weighs about 2 tons, which is equivalent to 4,480 lbs. To calculate the number of 40 lb bags needed, we can divide the weight of a cubic yard by the weight of each bag. 4,480 lbs / 40 lbs = 112 bags. Therefore, approximately 112 bags of 40 lb topsoil would be needed to fill a cubic yard.A large size premix bag of concrete weighs about 80lb (pound) and 90lb (pound). Medium size bag weighs about 60lb (pound) and small bag weighs 50lb (pound) and 40lb (pound). Weight of Ready mix concrete in dry condition is about 133 lbs per cubic foot which is approximately equal as 3600 lbs per cubic yard, or 2136 kg per cubic meter. How many 60lb bags of concrete in a yard, Here is how to calculate the required number of bags: First, you need to calculate the volume of the post hole. Volume = 1.96344 cubic feet or 0.07271 cubic yards. The second step is to divide the volume by the yield. For example, for a 60lb bag, 0.07271 / 0.01648 = 4.412, rounding up to 5 60lb bags., Jan 22, 2014 · How many 60lb bags of concrete needed for a slab. How many 80lb bags of concrete needed for a slab. Cubic Feet of Concrete in a 40lb bag. Cubic Feet of Concrete in a 60lb bag. Cubic Feet of Concrete in a 80lb bag. Cubic Yards of Concrete in a Circular Slab. Number of 40lb bags needed for a Circular Slab. , 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 ..., For example, 42 bags of 80 lbs standard concrete are on a full pallet. 42 bags of 80lbs. Quikrete 5000 concrete mix also come on a full pallet. This is because the weight per bag is the same. Ready to Use Concrete Mix. 40, 60, and 80 lbs bags. $4.99 per bag. Fast Setting Concrete Mix. 50 lbs bags. $5.25 per bag., For 1 cubic yard of concrete you'll need: 45 bags of 80lb concrete; 60 bags of 60lb concrete; 90 bags of 40lb concrete; Check out how I mix concrete by hand here. how many yards of concrete in a truck? Most concrete trucks can carry 10 yards of concrete. The total yardage a truck can carry will depend on if it's a front discharge or rear ..., 0.009 cubic feet or 0.000 cubic yards or 0.000 cubic meters if pre-mixed concrete*, it is 1.231 lbs or 0.558 kgs if 60 lbs per bag, it is 0.021 bags , Most synthetic fibermesh products are engineered for use as concrete reinforcement at a ratio of 1.0 to 1.5 lbs per cubic yard (.60 to .90 kg per cubic meter). of concrete. Although more, 2 or 3 bags per yard could be added for some "extra" reinforcement, adding less than 1 bag per yard is not recommended., 60lb Concrete bags: 499: 80lb Concrete bags: 150: Small wheelbarrow loads: 75: Large wheelbarrow loads *Approximation Estimate. Concrete Truck for 20'x30' x6" ... Ready-mixed concrete costs on average $108.22 per cubic yard delivered. Using a concrete truck to cover 600 sq ft at a depth of 6", ..., Mar 1, 2024 · Concrete comes in cubic yards and cubic feet. You can order premixed concrete by the yard, while bags of Quikrete and similar brands are sold by the cubic foot. Bags of concrete come in four sizes – 40, 50, 60, and 80 lb bags. A 40 lb bag of concrete covers 0.011 yards or 0.3 cu ft. One 50 lb bag of concrete covers 0.013 cubic yards or 0.37 ... , A retest of the lows of October could be seen in the months ahead....USCR U.S. Concrete (USCR) has been sinking lower and lower all year. Bounces have been short-lived and new lows..., 60 pound bag yields .017 cubic yards. 80 pound bag yields .022 cubic yards. READY MIX VS. BAGGED CONCRETE. Should I order concrete by the yard from a ready mix company or just use bags? Larger jobs such …, The number of bags you need will vary depending on the type of concrete mix you choose for your project. If you’re using 50lb bags of concrete, you’ll need 72 bags to make a yard. If you’re using 60lb bags of concrete, you’ll need 60 bags to make a yard., How many 80 lbs bags of concrete make a cubic yard? Approximately 45 bags (for 0.60 cubic yards) How many cubic feet is an 80-pound bag of concrete? 0.60 cubic feet (0.017 cubic meters) What is the formula for cement bags? Volume needed / Bag volume: How many cubic feet is a 60-pound bag of concrete? 0.45 cubic feet (0.013 cubic meters), About This Product. Quikrete 80 lb. Concrete Mix can be used for building or repairing foundation walls, sidewalks, curbs, steps and ramps and for setting posts. This concrete mix is designed for pouring concrete 2 in. thick or more and is easy to use by simply adding water. Quikrete 80 lb. Concrete Mix consists of a uniformly blended, properly ..., How many bags of concrete in a yard?As per general rules and guidelines, for making a yard, generally you will need 45 bags of 80 lb concrete or 60 bags of 6..., Regardless of bag size, the weight of the pallet will generally be around 3,200 to 3,400 lbs (1,451.5 to 1,542.21 kg), and you are also able to calculate cubic yards this way. A single cubic yard of dry concrete weighs around 4,000 lbs (1,814.37 kg), and if you divide 3,400 by 4,000, you get 0.85. This means that a pallet of concrete roughly ..., For example, an 80-pound bag of mix yields approximately 0.60 cubic feet of concrete while a 40-pound bag yields 0.30 cubic feet. To produce a yard of concrete, you’ll need to use about 45 80-pound bags or 90 40-pound bags. (Note: A cubic yard of concrete contains 27 cubic feet, so when you divide 27 by 0.60, the result is equivalent …, The approximate volume of concrete produced from an 80 lb (pound) bag is 0.60 cubic feet. Quikrete’s or Sakrete Concrete Mix yield’s about 0.15 cubic feet for every 20 pounds of mix, so an 80-pound bag of concrete …, 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., One cubic yard of bag concrete weighs about 3, 600 pounds. To find the number of bags of concrete per yard divide the 3,600 pounds by each bag weight. Here are the approximate quantities: 40lb bags: 3600/40 = around 90 bags. 60lb bags: 3600/60 = around 60 bags. 80lb bags: 3600/80 = around 45 bags., How much area does a 50 lb bag of quikrete cover? One 50-pound bag of Quikrete Fast Setting Concrete Mix yields about. 375 cubic feet. For example, if you need to cover 33.333 cubic feet, using 60-pound bags of concrete, divide 33.333 cubic feet by. 45 cubic feet to get 74.07 total bags of concrete., Jan 7, 2021 · Shape. Dimensions (in ft.) x. x. Thickness. Calculate. Total Slab Area (in cubic yds): This concrete estimator will help you find out how much concrete you need by cubic yard. Plus, find how much 80lb and 60lb bags cover, estimate the slab area for triangular or octagonal shapes and more. , Mar 1, 2024 · Concrete comes in cubic yards and cubic feet. You can order premixed concrete by the yard, while bags of Quikrete and similar brands are sold by the cubic foot. Bags of concrete come in four sizes – 40, 50, 60, and 80 lb bags. A 40 lb bag of concrete covers 0.011 yards or 0.3 cu ft. One 50 lb bag of concrete covers 0.013 cubic yards or 0.37 ... , 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., For one yard of concrete, the number of bags needed varies by weight: 90 bags for 40lb, 72 for 50lb, 60 for 60lb, 45 for 80lb, and 40 for 90lb. Dive into this guide as we demystify the calculations, introduce a handy concrete bag calculator tool, and break down how many bags of concrete are needed for yards and slabs., A 60 lb bag will yield .017 cubic yards of concrete, an 80 pound bag will yield .022 cubic yards. So to break this down you would need 78 60lb bags of concrete mix 61 80lb bags of concrete mix which accounts for the extra 10% that we discussed earlier., How many 60lb bags of concrete needed for a slab. How many 80lb bags of concrete needed for a slab. Cubic Feet of Concrete in a 40lb bag. Cubic Feet of Concrete in a 60lb bag. Cubic Feet of Concrete in a 80lb bag. Cubic Yards of Concrete in a Circular Slab. Number of 40lb bags needed for a Circular Slab., A 60 lb bag of concrete yields approximately .45 cubic feet . There’s 27 cubic feet of concrete in a yard. If you divide 27 by .45 it equals 60 bags of concrete. How many square feet will a 60 lb bag of concrete do? @ 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 Many Bags of Concrete in a Yard A cubic yard is equivalent to 27 cubic feet. Assuming a typical concrete density of 150 lb/ft 3 , a total of 4050 lbs of concrete would be required for a cubic yard, which equates to 101.25 x 40lb bags , 67.50 x 60lb bags , or 50.63 x 80lb bags ., 90 40-lb bags make 1 yard. 60 60-lb bags make 1 yard. 45 80-lb bags make 1 yard. For example, to approximate the number of 40-pound bags needed for a 7.71-yd 3 concrete slab, you will multiply 90 x 7.71, equaling about 694 bags needed. Quick Tip: It’s better to overestimate the amount you need so you don’t come up short., bag weight / cement density = 80 / 94 = 0.85 cu ft. Then, divide the volume of cement you need by the volume in one bag. Convert yards into feet by multiplying by 27. 2 × 27 / 0.85 ≈ 64 bags. You will need about 64 bags to fill a 2-cubic-yard surface with cement., There are 45 80-pound bags and about 60 60-pound bags of concrete in a cubic yard. Each 80-pound bag of concrete covers about 0.6 cubic feet. There are 27 cubic feet in a cubic yar..., Concrete is a popular material used in construction and landscaping projects. It’s strong, durable, and relatively inexpensive. But how much does concrete cost per yard? The answer...