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:
Full Answer
How much concrete is in a 60 lb bag?
CONCRETE VOLUME - cubic feet per 60lb bag. The approximate volume of concrete produced from a 60 pound bag is 0.45 ft³.
How much is a 80 lb bag of concrete?
You'll also get the number of 40-pound, 60-pound, or 80-pound bags of concrete are needed for the project. For example, a 10′ x 10′ slab that is 4″ thick will need an estimated 1.23 yards 3 or 75 60lb bags of concrete and will cost roughly $140.
How many square feet in a 80 lb bag of cement?
How much does 80 lb bag of concrete? 80 lb bag of concrete yields 0.60 cubic feet which is approximately around 0.0222 cubic yards that will cover around 3.6 sq ft area up to standard depth of 2 inch excavation or backfills, and for 1 cubic feet of landfill you will need 1.66 bags of 80 lb concrete.
How much concrete will I need calculator?
While the hole may be 42 inches deep, you need to subtract the 6-inch gravel layer to calculate an accurate concrete amount. So, the 42-inch hole is actually a 36-inch hole for the purpose of determining the amount of concrete. Calculate the amount of concrete per post.
How many bags of cement do I need calculator?
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.
How many 20kg bags of concrete do I need?
one 20kg bag will cover an area of 1.1m2 to a depth of approximately 10mm. or 108 x 20kg bags equates to one cubic metre of mixed concrete.
How many 80lb bags of concrete do I need for a 12x12 slab?
Regarding this, “how much concrete do I need for a 12×12 slab?”, at 4 inches thick, generally you will need approximately 1.76 cubic yards or 47.52 cubic feet or 1.35 m3 (either 104 bags of 60lb or 80 bags of 80lb) of premixed concrete for a 12×12 slab, at 5 inches thick slab, 2.22 cubic yards or 59.90 cubic feet or ...
How many bags of concrete do I need for a 10x10 slab?
At 4″ thick, for a 10×10 slab, generally, you will need 1.23 cubic yards or 33 cubic feet or either 74- 60lb or 56-80lb bags of premixed concrete.
How many cubic metres does a 20kg bag of concrete make?
0.009m3Drymix ProductsOne 20kg bag makes:To make 1m3:0.009m3 OR 9 Litres110 bagsPackaging20 kg bag size60 bags to a pallet (1.2 tonnes)
How many 20kg bags of cement makes a cubic metre of concrete?
There are 110 bags of 20kg of concrete in a cubic metre. 1 cubic metre of concrete weighs 2200kg, so, number of bags of 20kg of concrete in a cubic metre = 2200 ÷ 20 = 110 bags. So, approximately there are 110 bags of 20kg of concrete in a cubic metre.
How many square feet does a 80lb bag of concrete cover?
80 lb bag of concrete cubic feet 80 lb bag of concrete yields 0.60 cubic feet which is approximately around 0.0222 cubic yards that will cover around 3.6 sq ft area up to standard depth of 2 inch excavation or backfills, and for 1 cubic feet of landfill you will need 1.66 bags of 80 lb concrete.
How many bags of concrete do I need for a 4x4 slab?
How many bags of concrete do I need for a 4×4 slab at 4 inch thick?”, its depend on thickness of slab, at 4 inches thick, generally you will need approximately either 12 bags of 60lb or 9 bags of 80lb (0.20 cubic yards or 5.28 cubic feet or 0.15 m3) of premixed concrete for a 4×4 slab.
How much concrete do I need for a 4x8 slab?
At 4 inch thick, for a 4×8 slab, you will need either twenty three 60- pounds or eighteen 80- pounds or thirty six 40- pounds bags of concrete. Thus, either 23- 60lb or 18- 80lb or 36- 40lb bags of concrete will be required for a 4×8 slab at 4″ thick.
How many bags of concrete do I need for a 10x10 slab 3 inches thick?
The amount of concrete I used for this 10' x 10' slab was 2 yards. First, here's how many yards of concrete you need for a 10 x 10 slab based on how thick it is. The amount of concrete you need for a 10 x 10 slab that's 3 inches thick is 1 cubic yard.
How much does it cost to pour a 10x10 concrete slab?
To pour a typical 10x10 concrete slab will cost $670 to $930, a 12x12 slab for a patio will cost $796 to $1,476, a 20x24 driveway slab runs between $1,440 and $3,360, and a 24x24 slab for a garage will cost $3,058 to $5,944.
How many bags of concrete do I need for a 10x20 slab?
Regarding this, “how much concrete do I need for a 10×20 slab?”, at 4 inches thick, generally you will need approximately 2.44 cubic yards or 66 cubic feet or 1.969 m3 (either 144 bags of 60lb or 111 bags of 80lb) of premixed concrete for a 10×20 slab, at 5 inches thick slab, 3.07 cubic yards or 83 cubic feet or 2.35 ...
Estimating How Much Concrete You Need
Our calculator can estimate the yards of concrete needed by entering the project dimensions in imperial or metric measurements, including inches, f...
Estimating The Cost to Install Concrete
The average cost to install a concrete slab is $6 – $16 per square foot. In addition to the cost of the concrete itself, there are also labor costs...
Preparing to Pour Concrete
Much of the work to pour concrete is done before the truck even arrives at the project. The site must be measured and laid out. Forms must be insta...
Tips For Ordering Concrete
Call your concrete supplier and tell them about your project and what the project is. Ask them to advise you on the proper mix given your applicati...
What is formwork construction?
Constructing formwork commonly amounts to a signification portion of the concrete work's entire cost. That's why you must first determine the formwork type that you'll use for your project before starting it. It's best to distinguish the formwork type you'll use, its installation process, and whether you'll buy or rent the form materials. Meanwhile, other associated costs can include renting equipment such as a crane to move and form materials. These machines can also create release products and re-using form material.
What is crazing in concrete?
Another common issue when it comes to working with concrete is crazing. It's a network of tiny cracks found in the concrete's surface . It often occurs when you use an improperly mixed or cured cement during the installation process. Although these cracks won't work their way into the structure's foundation to create an impact, the fine lines can reduce the property's aesthetic value.
Why is my concrete slab dark?
There are times when concrete can also have light or dark patches because of improper installation techniques. Stains from materials such as automobile fluids and cleaning chemicals can cause it , too. So, as soon as you notice any stains or discolorations, it's best to address it as quickly as possible. Doing so will prevent the stains from seeping in and spreading throughout the entire concrete slab.
How does concrete help in building?
Concrete buildings can moderate the temperature conditions inside the building. Thus, reducing the need for heating and cooling over its service life. When combined with other technologies such as hydronic heating, concrete can boost energy efficiency by up to 70%. Versatile.
What is concrete used for?
When it comes to construction, concrete is man's commonly used material on earth. It's a crucial part of any buildings, roads, dams, and bridges. Furthermore, it also uses a range from different structural applications to drains, curbs, and paviors.
How many yards of concrete do you need to order?
Many ready-mix companies will have a minimum order of 1 yard and charge shortage fees when ordering partial batches. The average truck holds between 9 and 11 yards total.
How to calculate square footage of concrete?
Get the right length and width of the area that you want to cover. Multiply the length by width so that you can get the correct square footage. Convert the thickness of the concrete from inches to feet. After your conversion, multiply the concrete's thickness in feet by the square footage to get cubic feet.
How Much Volume of Concrete Do I Need?
It can be difficult for a novice to remove the exact quantity of concrete needed for a specific construction or project. If you hire an engineer or a contractor to do the work, the estimate will be provided by them.
How Many Premix Concrete Bags Do I Need?
Nowadays, for small household projects, most people do not prepare the concrete by hand. Instead, they buy ready-made premix concrete bags based on their needs. This saves a lot of time and effort.
How much concrete is in a yard?
You might be wondering just how much concrete is in a cubic yard? A cubic yard is equal to 27 cubic feet or 46,656 cubic inches, or 45 80lb bags.
What is a pre-mixed bag?
Pre-mixed bags are sold by companies like Quikrete or Sakrete, and come in 40-pound, 60-pound, or 80-pound sizes. Using bags can be easier than ready-mix when you have many small pours or a small project where a truck is not practical or cost-effective.
How much does it cost to install concrete slabs?
Average price of concrete. The average cost to install a concrete slab is $6 – $20 per square foot. Besides the cost of concrete and materials, there are also labor costs for preparing the area, the pour, and finishing.
What is concrete made of?
Concrete, which is a mix of water, aggregate, and cement, is most commonly sold by the cubic yard, but is also available in pre-mixed bags. It’s important to calculate the amount of material needed as accurately as possible since you often only get one chance for the pour. We’ll cover the process for estimating concrete in detail below, ...
How much does ready mix concrete cost?
Ready-mix concrete typically starts around $115 per yard but could cost upwards of $150 or more, depending on the mix and your location. Consider that there will likely be additional fees for ready-mix for smaller projects, such as delivery or short-load fees.
Can you mix concrete bags on site?
But, keep in mind that mixing bags on-site can become difficult if you’re pouring a large slab or many footings. For the most part, ready-mix concrete from a truck is more cost-effective than bags and makes sense if you have a mid-size project and can pour all at once.
What is concrete mixed into?
Alternatively, in some factory settings, concrete is mixed into dryer forms to manufacture precast concrete products such as concrete walls. The process of concrete hardening once it has been placed is called curing, and is a slow process.
Why is concrete mixing important?
Proper mixing is essential for the production of strong , uniform concrete. It involves mixing water, aggregate, cement, and any desired additives. Production of concrete is time-sensitive, and the concrete must be placed before it hardens since it is usually prepared as a viscous fluid.
What is cement used for?
Cement is a substance that is used to bind materials, such as aggregate, by adhering to said materials, then hardening over time . While there are many types of cement, Portland cement is the most commonly used cement, and is an ingredient in concrete, mortar, and plasters.
Is concrete time sensitive?
Production of concrete is time-sensitive, and the concrete must be placed before it hardens since it is usually prepared as a viscous fluid. Some concretes are even designed to harden more quickly for applications that require rapid set time.
Should I order concrete by the yard from a ready mix company or just use bags?
Larger jobs such as driveways are easier to complete when ordering concrete by the yard, rather than trying to mix bag after bag by hand. For smaller jobs, like a walkway, modest patio or footings, you should calculate the number of concrete bags instead.
Calculating the amount of concrete needed for slabs (including odd shapes)
Rule of thumb: add 1 / 4 " to the thickness of your slab for your slab concrete budget. This assumes you have the job evenly graded to the right depth, and the grade is well compacted.
Calculating the amount of concrete needed for footings
Footings will rarely follow the drawing exactly. In rocky soil the footings may collapse when big rocks are excavated
Estimating concrete steps
Steps seem tricky to calculate but are not. If there are three steps leading up to a porch:
Calculating the amount of base fill
Granite Construction has an excellent base fill calculator on their site. Use this to figure how much material you need for the subgrade.
Requesting your ready mix supplier to visit your site
After you have chosen a Ready Mix Supplier, have a representative come to your site to give his/her opinion on the quantity required. Compare the figure with what you came up with. Discuss any variances with the supplier.
Calculator Use
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 meters) of your concrete structure to get the cubic yards value of the amount of concrete you will need to make this structure.
Curbs & Gutters
We calculate the volume in sections from the ground to the top of each section. The Curb and Gutter are each a section.
How many bags of quikrete calculator - Decorwiki - Summary ..
We have also included a Quikrete bag calculator that will tell you how many 80 lb. bags of Quikrete you will need to purchase and then MIX yourself to complete the same job. Quikrete is $4.30* per 80 lb. bag and you can rent a truck and a cement mixer from your local hardware store for $144.00*.
Stucco Calculator - Project Estimator
The calculator will indicate the number of 80 lb bags of QUIKRETE® Base Coat Stucco and Finish Coat Stucco you will need to construct your stucco wall using a traditional 3 coat or 2 coat application process. (All yields are approximate and do not allow for uneven application thickness, waste, etc.)
How much quikrete do I need for a post?
The calculator will indicate the number of 60 or 80 pound bags of QUIKRETE® Concrete Mix you need to build a 4″ or a 6″ slab. How many bags of cement do I need for a post hole? Remember, the depth of the post hole should be one-half of the above-ground post height. (Example: For a 6 feet above ground post, use a post with an overall height ...
Concrete Calculator - How Much Concrete Do You Need ..
Estimate how many pre-mixed bags are needed for smaller projects when it isn't practical to order a truckload of concrete. The table below shows the coverage of different sizes of pre-mix bags. On average, it will take 90 40lb bags, 60 60lb bags, or 45 80lb bags to fill one cubic yard of concrete.
CONCRETE CALCULATOR - how many bags of concrete do I need?
For concrete, the procedure for volume is as follows: length x width x thickness. You need to divide the total cubic yards that the yield needs to determine the number of concrete bags you need. Use the following yields per each bag size: 40-pound bag yields .011 cubic yards. 60-pound bag yields .017 cubic yards.
Post Hole Concrete Calculator - Inch Calculator
The calculator will give you the results in cubic yards and the number of pre-mixed bags of concrete (40 lb, 60 lb, and 80 lb bags). To ensure that your posts are sturdy for a long time to come, remember to make your holes three times the diameter of your post and 1 ⁄ 3 as deep as your fence.
Concrete Mix (Quantity Calculator) - Target Products Ltd
The calculator will indicate the estimated number of 25 kg bags of Quikrete® 6000 or Quikrete® Crack Resistant Concrete Mix needed to build a 3", 4" or 6" slab (with a typical waste factor). Yields are approximate and will vary based upon placement methods, equipment utilized and do not include allowance for uneven subgrade, waste, etc.