How many bags of concrete for 8x8 slab

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 ...

#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...No, you do not need rebar for a 4 - inch slab of concrete on grade. A 4 - inch -thick slab cast on the ground and in permanent contact with it will float and rebar is not required. Rebar is recommended on concrete measuring 5 - 6 inches thick. How many square feet is in a 80 pound bag of concrete? 4 sq feet in that amount of cement.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 ...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.May 21, 2022 ... He said he used 52 80lb bags at 5bag. 260bucks not bad,a contractor wanted to charge me 4k for the same size, good for you.

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...As per general practices, generally you will need approximately 133 bags of 40lb (pounds) of premixed concrete for a 10×12 slab at 4 inches thick, 168 bags of 40lb at 5″ thick, 202 bags of 40lb at 6″ thick, 101 bags of 40lb at 3″ thick, and 68 …How many concrete bags would I need for a 18 ft x 24 ft x 6" slab? 359 x 80lb Concrete bags. How much does it cost to pour a 18'x24' x6" slab? Ready-mix costs approx $899.76. How much does it cost to hire a contractor to concrete a 18'x24' x6" slab? A pro costs between $2,160.00 and $4,536.00. How do you calculate concrete volume?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 ...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.So for your 128 sq ft area, this may roughly cost $71.68 for wire mesh, $384.00 for thicker wire rebar mesh and $16.64 for fiber mesh. *Reinforcing for 10 inch pours and under. How to Calculate Concrete Amount for 8x16 x6". 8 * 16 = 128 sq ft. 6 / 12 = 0.5 ft depth.

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 to 45 bags.) How many square feet can a bag of concrete cover? Again, It depends on how thick your slab is. For instance, an 80-pound bag ...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. 1 cubic yard = 27 cubic feet. With this formula in mind, you’ll be able to calculate just how much concrete or cement you’ll need for your project: One 60-lb bag of concrete gives you .45 cubic feet of concrete when mixed with 2.5 quarts of water. In order to have enough concrete for one cubic foot, you’ll require 2.2 bags of 60-lb concrete. 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.

Keystrokes per hour meaning.

We would like to show you a description here but the site won't allow us.With a brief look, a 12x22 area at 6 inches deep, you would need approximately 6.94 tons or 4.89 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 264 sq ft area, this may roughly cost $147. ...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: Weight = 0.3491 ...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 ... 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 15 ft x 8 ft x 6" slab? 100 x 80lb Concrete bags. How much does it cost to pour a 15'x8' x6" slab? Ready-mix costs approx $373.09. How much does it cost to hire a contractor to concrete a 15'x8' x6" slab? A pro costs between $600.00 and $1,260.00. How do you calculate concrete volume?We would like to show you a description here but the site won't allow us.Learn from a 39 year concrete flat work professional, how to install a concrete slab. I'll teach you my step-by-step formula for forming and pouring any size concrete slab. This diy video guide tutorial will easily show you the steps you need to take to successfully install your own concrete slab.At 6 inches thick, for a 10×12 slab you would need approximately either 100 80-Pound, 134 60-pound, or 200 40-pound bags of premixed concrete. If you measure in yards, 2.22 cubic yards (or 60 cubic feet) of concrete will be required. Let's do calculation and proceeds following steps: 1.How many 80lb bags of concrete for 8x10 slab 3in thick? Updated: 9/24/2023. Wiki User. ∙ 9y ago. Add an answer. ... How much concrete would it take to cover a 16x36x2inch deep area? ...Concrete Footings Calculator. Input length, width and depth of the area. Click the button to calculate the volume of concrete and man-hours (not including mixing) needed for this job. This calculator is to be used as an estimating tool only.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.Wall (sq ft) Block Size. 8 inch 12 inch. Request a Quote. Bags Required =. (add approx. 5% to the total for waste) Text Verification. Our concrete block calculators provide guidance to determine building materials required for construction projects. Try it out today!Use 10-by-10 welded wire mesh inside the area. Suspend the rebar and mesh above the rocks by placing pieces of scrap wood underneath them. Build the wooden forms for the outside of the concrete slab using your string marker as a guide. Nail pieces of 2-inch-by-10-inch lumber together. Hold the wood in place with stakes.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.

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...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)The average cost of a concrete slab is $8 per square foot for materials and labor with most paying between $6 on the low end to $14 per square foot on the high end. ... Quikrete — Calculate how many bags of cement you may need. Added on July 17, 2015; Lowes — Concrete Pad Calculator. Added on April 16, 2023;May 28, 2011 · 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. How many concrete bags would I need for a 5 ft x 8 ft x 6" slab? 33.2 x 80lb Concrete bags. How much does it cost to pour a 5'x8' x6" slab? Ready-mix costs approx $238.26. 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 ... Concrete Slab Installation Cost Estimate. Average Cost (24x24) $3,460. Highest Cost (40x60) $14,400. Lowest Cost (10x10) $600. Advertisement. Compare Quotes From Top-rated Local Contractors.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...

Sedgwick county property tax.

7974 lake underhill rd.

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. ...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 …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. Let's do calculation and proceeds following steps:1:2:4 mix= approx 7 bags of cement per cubic meter. 1:3:6 mix= approx 4 bags of cement per cubic meter. 5 bags of cement per cubic meter is optimal considering cost and quality. Volume of slab= Slab Area x Slab thickness. Slab area= 180 sq.m. Thickness used= 150mm. Volume of slab= 180 x .15m. 27m3. Beams and slabs are mostly casted together, hence:With a brief look, a 30x40 area at 6 inches deep, you would need approximately 31.56 tons or 22.22 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 1200 sq ft area, this may roughly cost ...This series of concrete calculators has been developed to help you plan your project. You can calculate how much concrete, cement, sand, mortar or render you will need. For each calculation you will have to know the dimensions of your object. The calculator will perform the sums for you - where relevant it will add a small percentage for the wastage that …How much concrete do I need for an area of 12 ft x 15 ft x 6" depth? 3.333 cu. yds. How many concrete bags would I need for a 12 ft x 15 ft x 6" slab? 150 x 80lb Concrete bags. How much does it cost to pour a 12'x15' x6" slab? Ready-mix costs approx $474.63. How much does it cost to hire a contractor to concrete a 12'x15' x6" slab?How many 80 pound bags of concrete to pour a 2x2 slab 6 inches thick? Wiki User. ∙ 2013-09-24 13:13:24. ... 120 square feet of concrete at 8 inches thick how many 80 pound bags of concrete will ...Next, multiply the surface area by the thickness of the slab. Convert the thickness into feet so that you'll get the volume product in cubic feet. This, in turn, makes it simpler to calculate the number of yards you'll need for your concrete order. For example, a 10 x 12-foot slab has an area of 120 square feet.As per general practices, generally you will need approximately 86 bags of 60lb (pounds) of premixed concrete for a 10×12 slab at 4 inches thick, 109 bags of 60lb at 5″ thick, 131 bags of 60lb at 6″ thick, 66 bags of 60lb at 3″ thick, and 44 bags of 60lb at 2″ thick. How much concrete do i need for a 16×20 slab. ….

Welcome to the concrete calculator. It will help you calculate the number of bags of concrete required for your path, slab or post holes. Please select your stateHow many 80lb bags of concrete for 8x10 slab 3in thick? Updated: 9/24/2023. Wiki User. ∙ 9y ago. Add an answer. ... How much concrete would it take to cover a 16x36x2inch deep area? ...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.To core fill 300mm blocks allow 1.1m3 of concrete per 100 blocks. To core fill 300mm 'H' blocks allow 1.32m3 of concrete per 100 blocks. How many cinder blocks can you fill with one bag of concrete? Each 80 lb (36.3 kg) bag of QUIKRETE® grout will fill the cores of approximately 3 standard 8″ × 8″ × 16″ (203 × 203 × 406 mm) block.How many concrete bags would I need for a 9 ft x 12 ft x 6" slab? 90 x 80lb Concrete bags. How much does it cost to pour a 9'x12' x6" slab? Ready-mix costs approx $352.44. How much does it cost to hire a contractor to concrete a 9'x12' x6" slab? A pro costs between $540.00 and $1,134.00. How do you calculate concrete volume?How many 80 pound bags of concrete to pour a 8x8 slab 4 inches thick? U need 1.63 80lb bags per square ft so 131bags to do 8ft by 8ft. How many yards of concrete does it take to pour 3800 sf?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.At 4 inches thick, for a 4×4 slab you would need approximately either 9 80-Pound, 12 60-pound, or 18 40-pound bags of premixed concrete. If you measure in yards, 0.198 cubic yards (or 5.33 cubic feet) of concrete will be required. Let’s do calculation and proceeds following steps: 1.How many concrete bags would I need for a 8 ft x 8 ft x 6" slab? 54 x 80lb Concrete bags. How much does it cost to pour a 8'x8' x6" slab? ... 64 sq. ft., 8 x 8, 8x8, 8x8 x6", 8'x8'x6", 8'x8' x6" This Concrete calculator can be used for a slab, floor, garage, block, wall, driveway, patio, countertop, footings, foundation, pool or basement, and ... How many bags of concrete for 8x8 slab, 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 ..., At 6 inches thick, for a 10×20 slab you would need approximately either 167 80-Pound, 223 60-pound, or 334 40-pound bags of premixed concrete. If you measure in yards, 3.7 cubic yards (or 100 cubic feet) of concrete will be required. Let’s do calculation and proceeds following steps: 1., How many concrete bags would I need for a 10 ft x 10 ft x 6" slab? 84 x 80lb Concrete bags. How much does it cost to pour a 10'x10' x6" slab? Ready-mix costs approx $338.11. How much does it cost to hire a contractor to concrete a 10'x10' x6" slab? A pro costs between $500.00 and $1,050.00. How do you calculate concrete volume?, 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., 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., 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. ..., With a brief look, a 15x20 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. ..., How Many Bags of Concrete for a 4×4 Slab? To determine the number of bags of concrete needed for a 4×4 slab, we must consider the thickness of the slab. For a 2-inch thick slab, the amount of concrete required will be different from that of a 4-inch thick slab. Let's break it down: Slab Thickness: 2 inches, For a 5" thick slab, 100 sq. ft. / 65 = 1.54 yards of concrete or 70 (80 lb) bags of concrete For a 6" thick slab, 100 sq. ft. / 52 = 1.92 yards of concrete or 87 (80 lb) bags of concrete For the calculations above, I rounded up to get an even number of bags., With a brief look, a 30x15 area at 6 inches deep, you would need approximately 11.83 tons or 8.33 cubic yards of gravel. Concrete reinforcing is also recommended in high traffic areas and medium to large areas. Wire mesh on average costs $0.56 per sq ft and fiber mesh costs $0.13 per sq ft. So for your 450 sq ft area, this may roughly cost $252 ..., 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 ..., 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 ..., With a brief look, a 18x20 area at 6 inches deep, you would need approximately 9.47 tons or 6.67 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 360 sq ft area, this may roughly cost $201. ..., 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. Let's do calculation and proceeds following steps:, Concrete can be purchased in multiple forms, including in 60 or 80-pound bags, or delivered in large amounts by specialized concrete mixer trucks. Proper mixing is essential for the production of strong, uniform concrete. It involves mixing water, aggregate, cement, and any desired additives. , 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., 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 ..., As per general practices, generally you will need approximately 72 bags of 60lb (pounds) of premixed concrete for a 10×10 slab at 4 inches thick, 91 bags of 60lb at 5″ thick, 109 bags of 60lb at 6″ thick, 55 bags of 60lb at 3″ thick, and 37 bags of 60lb at 2″ thick., 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., 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)., We want the wall to be 15 feet high and 30 feet in length. I want to know how many concrete blocks will be required, and an estimate for the cost of the masonry project. Entering these dimensions into the concrete block calculator gives a wall area in square feet of:, 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 ..., As per general practices, generally you will need approximately 133 bags of 40lb (pounds) of premixed concrete for a 10×12 slab at 4 inches thick, 168 bags of 40lb at 5″ thick, 202 bags of 40lb at 6″ thick, 101 bags of 40lb at 3″ thick, and 68 …, 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., Feb 22, 2023 · 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... , 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., 6x12' is doable with a good concrete mixer. Rent a larger one Don't buy concrete bags. Buy cement, sand and aggregate, and mix it yourself. You can usually get the sand and aggregate premixed bulk too. IE a truckload. Then you back the truck up to the mixer. 5-7 shovels mix, one shovel cement., The amount of concrete you need for a 3×5 slab depends on how thick it will be. So, for a 4-inch slab you’ll need 0.185 cubic yards, or 5 cubic feet (9 80lb bags), a 3-inch slab requires 0.139 cubic yards, or 3.75 cubic feet (7 80lb bags), but a 2-inch slab requires 0.208 cubic yards, or 2.5 cubic feet (5 80lb bags)., 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 concrete bags would I need for a 5 ft x 12 ft x 6" slab? 50 x 80lb Concrete bags. How much does it cost to pour a 5'x12' x6" slab? Ready-mix costs approx $271.54. How much does it cost to hire a contractor to concrete a 5'x12' x6" slab? A pro costs between $300.00 and $630.00. How do you calculate concrete volume?, Next, multiply the surface area by the thickness of the slab. Convert the thickness into feet so that you'll get the volume product in cubic feet. This, in turn, makes it simpler to calculate the number of yards you'll need for your concrete order. For example, a 10 x 12-foot slab has an area of 120 square feet., At 4 inches thick, for a 12×16 slab you would need approximately either 160 80-Pound, 214 60-pound, or 320 40-pound bags of premixed concrete. If you measure in yards, 3.56 cubic yards (or 96 cubic feet) of concrete will be required. Let's do calculation and proceeds following steps: 1., 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. ...