2024 How many bags of concrete for 8x8 slab

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.. Bar rescue champagne cafe

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.Because reinforced concrete slabs, blocks, driveways, and buildings will last much, much longer. Rebar sizes. For the imperial-unit countries, bar sizes give the diameter in units of the ⅛ inch for bar sizes #2 through #8. For example, 8⁄8 = #8 = 1 inch diameter. Equivalent metric size is typically specified as the nominal diameter rounded ... How much concrete do I need for a 6×8 slab. As per general practices, generally you will need approximately 0.59 cubic yards or 15.84 cubic feet or 0.45m3 (either 35 bags of 60lb or 27 bags of 80lb) of premixed concrete for a 6×8 slab at 4 inches thick, and, at 3 inches thick, for a 6×8 slab, either 26 bags of 60lb, or 20 bags of 80lb, or 40 ... I want to construct a circular slab of concrete measuring 5 ft high. I want to figure out how many bags of 40 lb concrete I need to do this. The outer diameter is 10 ft and the inner diameter is 9 ft. The price of the concrete is $108 per cubic yard. The ready mix concrete calculator does the following calculations: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. ...Typically for a 24x24x4 slab you'll need exactly 7.11 cubic yards, or 192 cubic feet, or either 320 x 80 lb bags, 427 × 60 lb bags, or 640 × 40 lb bags of concrete. It's a good idea to order a little extra to account for potential spillage and to ensure you have enough to complete the project.3. Use their calculator! Enter the area (12x20 is 240 sqft) and the depth of your slab (4in). It will break it down into the required number of bags. There are some good alternatives to mixing your own bags. See answers under the earlier question Best way to source concrete for a long fence project.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. DimensionsIt can be applied from 2 in. to 24 in. 24/6 Concrete Mix is ready for foot traffic in 8 to 10-hours and reaches structural strength in 24-hours. Use 24/6 Concrete Mix for general and structural concrete repair, setting posts, driveways, walkways, floors, sidewalks, patios, formed work, footings and more.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. 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 ... 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 ...A concrete slab is a flat, horizontal surface made of concrete that serves as a foundation for structures or as a floor, patio, or walkway. To calculate the amount of concrete needed for a slab, measure its length, width, and thickness in meters. ... How many 25kg bags of cement in a cubic metre of concrete? Using the standard 1:2:3 mix …I want to construct a circular slab of concrete measuring 5 ft high. I want to figure out how many bags of 40 lb concrete I need to do this. The outer diameter is 10 ft and the inner diameter is 9 ft. The price of the concrete is $108 per cubic yard. The ready mix concrete calculator does the following calculations: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).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.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.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...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.Feb 17, 2023 · 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. 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 ...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. ...4. Translating Volume to Bags of Concrete. Concrete is typically sold in bags that denote the volume of concrete they can produce when mixed. Commonly, you'll find 60-lb and 80-lb bags. An 80-lb bag of concrete typically covers around 0.6 cubic feet. For our example: Number of 80-lb bags=5.330.6≈9 Number of 80-lb bags = 0.6 5.33 ≈ 9step 3. screw the forms together and square the slab. Use your marks to screw the forms together. Align the inside of the form with your pencil mark. You can use a drill driver and deck screws like we do or you can use a hammer and nails to fasten the forms together.With a brief look, a 10x30 area at 6 inches deep, you would need approximately 7.89 tons or 5.56 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 300 sq ft area, this may roughly cost $168. ...With a brief look, a 60x80 area at 6 inches deep, you would need approximately 126.22 tons or 88.89 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 4800 sq ft area, this may roughly cost ...In US, dry ready mix concrete are packed in different bag size and weight in pounds such as smaller bag of 40lb (pounds) and 50lb (pounds), medium are of 60lb (pounds) bag, and larger are of 80lb and 90lb bag. If you want to install 5×4 concrete slab, first thing is to know about depth of slab and square footage of slab. Regardless of premixed ...Sep 13, 2023 · If you buy your concrete in 80lbs bags, it will take about 45 bags to equal 1 cubic yard. So, the calculation for an example project with ten 16” (8” radius) piers poured to a depth of 36” would look like this: 10×8” 2 x36” /14850 = 1.55 cubic yards (or 70 bags of 80lbs concrete mix) 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.With a brief look, a 16x16 area at 6 inches deep, you would need approximately 6.73 tons or 4.74 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 256 sq ft area, this may roughly cost $143. ...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 4×6 slab you will need 0.296 yards of concrete, so number of 80lb bag of concrete = 0.296 ÷ 0.022 = 14 bags, No. of 60lb bag = 0.296 ÷ 0.017 = 18 bags & No. of 40lb bag = 0.296 ÷ 0.011 = 27 bags. ALSO READ :-.I want to construct a circular slab of concrete measuring 5 ft high. I want to figure out how many bags of 40 lb concrete I need to do this. The outer diameter is 10 ft and the inner diameter is 9 ft. The price of the concrete is $108 per cubic yard. The ready mix concrete calculator does the following calculations:Apr 29, 2020 ... Comments172 · How to level concrete without using a form board · How To Form, Pour, And Stamp A Concrete Patio Slab · Pouring a DRY vs WET Con...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.The calculator will indicate the number of 50 lb. bags of QUIKRETE® Fast-Setting Concrete you need. Post Hole Calculator. Enter the Hole Depth in Inches. 2' Post Hole- 6" Hole Diameter. 4' Post Hole- 9" Hole Diameter. 6' Post Hole- 12" Hole Diameter. Products & Orders. (845) 221-2224.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 ...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.a'ightthen. 553 posts · Joined 2012. #23 · Oct 6, 2013. Having eaten more concrete than most have poured ( 200-300 cu yds/wk for nearly 13 yrs), I never once encountered a concrete truck of dry mix. Low slump yes, even on a 100 degree day with 1% calcium added due to a shelter being set the next morning.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.About This Product. QUIKRETE 60 lb. Concrete Mix features a 4,000 psi average compression strength and a blend of cement, sand and gravel or stone. The mix is easy to use and is ideal for building steps, sidewalks, patios and more.Take the hassle out of math and simplify your concrete planning with our best-in-class concrete slab calculator. With just 3 straightforward steps, you can quickly determine the exact amount of concrete required for your project. ... Select your unit type, cost type (by bag or by the yard/meter), bag size, cost and desired waste amount. Your ...How many concrete bags would I need for a 18 ft x 30 ft x 6" slab? 449 x 80lb Concrete bags. How much does it cost to pour a 18'x30' x6" slab? Ready-mix costs approx $1,252.20. How much does it cost to hire a contractor to concrete a 18'x30' x6" slab? A pro costs between $2,700.00 and $5,670.00. How do you calculate concrete volume?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 4×6 slab you will need 0.296 yards of concrete, so number of 80lb bag of concrete = 0.296 ÷ 0.022 = 14 bags, No. of 60lb bag = 0.296 ÷ 0.017 = 18 bags & No. of 40lb bag = 0.296 ÷ 0.011 = 27 bags. ALSO READ :-.With a brief look, a 25x25 area at 6 inches deep, you would need approximately 16.44 tons or 11.57 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 625 sq ft area, this may roughly cost ...32 cubic feet / 27 = approximately 1.19 cubic yards. Step 6: Account for Overages: It's advisable to order slightly more concrete than your calculated volume to ...Volume Calculator. This calculator is based on. 6 - 94 Lb. sacks of Portland. Cement per cubic yard. (3000psi). 27 cubic feet equals. 1 cubic yard. Enter number of bags. of Portland cement or.There are 188 bags of 80 pound premix concrete are required for 15×15 slab at 6″ thick. Using pre-mixed bags to cover 15×15 (225 sq ft) at a depth of 6″, the estimated cost is $658 (188 × $3.50 = $658). If you have a 15×15 slab with 4 inches thick, you would need 2.75 cubic yards or 74.25 cubic feet of concrete.How many concrete bags would I need for a 8 ft x 14 ft x 6" slab? 94 x 80lb Concrete bags. How much does it cost to pour a 8'x14' x6" slab? Ready-mix costs approx $358.76. How much does it cost to hire a contractor to concrete a 8'x14' x6" slab? A pro costs between $560.00 and $1,176.00. How do you calculate concrete volume?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.Place beams or post anchors in wet concrete. Tube must remain stationary until concrete sets to avoid uneven placement. For footings, pre-cut QUIK-tube and prepare the hole in the same fashion. Place approximately 2" (50 mm) of gravel in the bottom of the hole. Drive one vertical rebar into the ground in the center of the hole, then pour a 4 ...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 ...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 8×16 slab you will need 1.56 yards of concrete, so number of 80lb bag of concrete = 1.56 ÷ 0.022 = 71 bags, No. of 60lb bag = 1.56 ÷ 0.017 = 92 bags & No. of 40lb bag = 1.56 ÷ 0.011 = 142 bags.20-25 Mpa This is medium-strength concrete mix and is suitable for house reinforced foundations, light duty house floors patio slabs, steps, driveways and garage floors. Cement River SandWe would like to show you a description here but the site won't allow us.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 ...How Many Concrete Bags?* *Approximation Estimate. Concrete Truck for 8'x15' x6" 22% 0.22 Concrete Truck Loads (10 cu/yd Capacity) Cost Estimate for 8'x15' x6" Purchasing …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).There are 188 bags of 80 pound premix concrete are required for 15×15 slab at 6″ thick. Using pre-mixed bags to cover 15×15 (225 sq ft) at a depth of 6″, the estimated cost is $658 (188 × $3.50 = $658). If you have a 15×15 slab with 4 inches thick, you would need 2.75 cubic yards or 74.25 cubic feet of concrete. With a brief look, a 14x14 area at 6 inches deep, you would need approximately 5.15 tons or 3.63 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 196 sq ft area, this may roughly cost $109. ... Calculate volumes for concrete slabs, walls, footers, columns, steps, curbs and gutters. Enter dimensions in US units (inches or feet) or metric units (centimeters or …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 …Concrete Slab Calculator avada1start 2018-12-20T15:18:52-04:00 Concrete Slab Calculator. To use the Concrete Volume Calculator, simply enter the width, length, and thickness of your pour. The calculator will automatically estimate the number of cubic yards of concrete that will be required. Concrete is ordered by volume in cubic yards.Take the hassle out of math and simplify your concrete planning with our best-in-class concrete slab calculator. With just 3 straightforward steps, you can quickly determine the exact amount of concrete required for your project. ... Select your unit type, cost type (by bag or by the yard/meter), bag size, cost and desired waste amount. Your ...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.How many concrete bags would I need for a 9 ft x 8 ft x 6" slab? 60 x 80lb Concrete bags. How much does it cost to pour a 9'x8' x6" slab? Ready-mix costs approx $292.19. How much does it cost to hire a contractor to concrete a 9'x8' x6" slab? A pro costs between $360.00 and $756.00. How do you calculate concrete volume?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 …MOST RECENT DRY POUR LINK HERE⬇️DRY POURING CONCRETE over EXISTING PATIO…What You Need To Knowhttps://youtu.be/i5PwQFQvbd8DRY POUR CONCRETE WALKWAY: 4 Inches...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.Calculate concrete in yards or pre-mixed bags for a slab, footing, wall, or other project. Plus, calculate concrete price for the project.We would like to show you a description here but the site won't allow us.Weight =1/5.5× 1925 m3×1440 kg/m3. Weight of cement = 5040 Kg. 1 bag cement = 50kg. No. of bags of cement = 5040/50. Number of cement bags are required for 100m2 slab = 100.8 bags. 100.8 cement bags are required for a 100m2 slab. You Can Follow me on Facebook and Subscribe our Youtube Channel. You should also visits:-.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!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 ...Looking to take on a concrete project? Let our Concrete Calculator help you determine the exact amount of material needed. With its estimates, it will be easier for you to avoid …#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...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, …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 ...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.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.A concrete slab is a flat, horizontal surface made of concrete that serves as a foundation for structures or as a floor, patio, or walkway. To calculate the amount of concrete needed for a slab, measure its length, width, and thickness in meters. ... How many 25kg bags of cement in a cubic metre of concrete? Using the standard 1:2:3 mix …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.Calculate concrete in yards or pre-mixed bags for a slab, footing, wall, or other project. Plus, calculate concrete price for the project.For example, if your pouring a 10×12 concrete shed floor that’s 4 inches thick, you’ll need 40 cubic feet of concrete. That works out to 1.48 yards of concrete which is 67 premixed 80 lb. bags totaling 5360 pounds of dry concrete. More when it’s mixed with water. The cost averages around $6 per bag totaling just over $400 before tax.How many concrete bags would I need for a 18 ft x 18 ft x 6" slab? 270 x 80lb Concrete bags. How much does it cost to pour a 18'x18' x6" slab? Ready-mix costs approx $717.32. How much does it cost to hire a contractor to concrete a 18'x18' x6" slab? A pro costs between $1,620.00 and $3,402.00. How do you calculate concrete volume?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 ...With a brief look, a 16x20 area at 6 inches deep, you would need approximately 8.41 tons or 5.93 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 320 sq ft area, this may roughly cost $179. ...

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.. Pill 292 rdy

3. Use their calculator! Enter the area (12x20 is 240 sqft) and the depth of your slab (4in). It will break it down into the required number of bags. There are some good alternatives to mixing your own bags. See answers under the earlier question Best way to source concrete for a long fence project.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.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! 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:-. 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.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′. The surface of the concrete should be relatively flat and slightly above the form. Step 8 Screed the concrete using a straight 2x4 by moving the board back and forth across the surface of the concrete in a sawing motion to remove the excess concrete and smooth the surface. Step 9 Add concrete to any low areas and screed level. Step 10 a'ightthen. 553 posts · Joined 2012. #23 · Oct 6, 2013. Having eaten more concrete than most have poured ( 200-300 cu yds/wk for nearly 13 yrs), I never once encountered a concrete truck of dry mix. Low slump yes, even on a 100 degree day with 1% calcium added due to a shelter being set the next morning.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.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 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..

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