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.

Also, How many bags of concrete do I need for 2 yards?

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. If you’re using 80lb bags of concrete, you’ll need 45 bags to make a yard.

Hereof, What is a cheaper alternative to concrete?

There are a few different types you can find in the home improvement store that can replace concrete cement used for driveways and walkways. These include pea gravel, crushed stone, and quarry process. Cheaper than other surface materials and low-cost to install.

Also to know How many square feet does a 50 lb bag of concrete 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.

How thick should a concrete slab be?

Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.

20 Related Questions Answers Found

Should you put plastic under concrete?

A concrete vapor barrier is any material that prevents moisture from entering a concrete slab. Vapor barriers are used because while fresh concrete is poured wet, it’s not supposed to stay that way. It needs to dry and then stay dry to avoid flooring problems. … This is why a vapor barrier under concrete is essential.

How many bags of concrete does it take to make a yard of concrete?

60 cu ft. So it will take 45 bag to equal one cubic yard of concrete. If you have a project over a 1/2 a cubic yard you should consider our Mix On-site Concrete especially if you are hand mixing. You will be one tired puppy if you mix a yard of concrete by hand.

How many bags of concrete make a yard?

Pure cement, sand and crushed rock all have about the same density, so a block of pure cement measuring 1 cubic yard of volume (about 3,600 pounds) will contain 45 bags of cement.

What is poor man’s concrete?

We have a few companies locally that offer “poor man’s concrete”. I’m not sure exactly what it is, but I’ve seen it in driveways and such. It’s a white powdery material they dump and flatten out and when it gets wet, it’s supposed to harden like cement.

Is it cheaper to pour concrete yourself?

One of the least expensive ways to get concrete is to mix your own. You can buy bags of the mix from a home improvement store. Typically, you only have to add water for it to be ready to pour. … Otherwise, you risk getting a weaker concrete once it cures, which could lead to cracks or crumbles within a couple of years.

How much does it cost to pour a 20×40 concrete slab?

Concrete Slab Cost Calculator

Size (in feet) Approximate Cost
20×40
$4,800
30×30 $5,400
30×40 $7,200
30×50 $9,000

Is quikrete as strong as regular concrete?

Quikrete fast setting concrete is just as strong as regular concrete. Concrete gets its strength from a chemical reaction that occurs over time during curing. After it’s had time to cure, which usually take 28 days to complete, Quikrete can reach strengths up to 5000 psi.

How many bags of concrete do I need for 1 yard?

One 80lbs bag of Quikrete Concrete Mix will yield approximately . 60 cu ft. So it will take 45 bag to equal one cubic yard of concrete.

How many bags of cement do I need for 100 square feet?

4 bags ( 401 kg) of cement and 1593 nos bricks are required for 100 square feet 13.5 inch brick wall.

Can I pour a 3 inch concrete slab?

Here, pouring a concrete slab 4 inches in thickness is fine. While you may choose to reinforce it with rebar, wire mesh should be sufficient. … A 3- to 4-inch slab will work for the floor of a storage or tool shed, workshop, garden shed, or playhouse.

How strong is 4 inches of concrete?

A concrete patio slab should be at least 4 inches thick and have a compressive strength of 3,000 PSI.

What is the minimum thickness of concrete bed block?

1) AS per ACI (AMERICAN CONCRETE INSTITUTE) the minimum thickness of rcc slab should be 5 inches. 2) As per IS 456-2000 the minimum thickness of RCC slab is restricted to 4 times of nominal size of aggregate. minimum thickness should not be less than 4.75 inches not forgetting factor of safety.

Can you pour concrete directly on dirt?

Long story short, yes you can pour concrete over dirt.

Do you need a vapor barrier under concrete driveway?

Water vapor will always move from a high relative humidity environment below the building into an area of low relative humidity – even through concrete. That’s why nearly every expert in the concrete industry recommends a below-slab vapor barrier to stop the vapor drive of water upward and into your building envelope.

Do I need gravel under my concrete slab?

Whether you pour concrete for a walkway or patio, a strong gravel base is required to prevent the concrete from cracking and shifting. Gravel is especially important in clay soil because it doesn’t drain well, which results in water pooling under the concrete slab and slowly eroding the soil as it finally drains.

How much does a 50 lb bag of concrete 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 .

How many wheelbarrows are in a yard of concrete?

Depending upon your wheelbarrow size (i.e. 2 or 3 cubic feet per wheelbarrow load), it will take 9 to 14 full loads to equal 1 cubic yard.

How many 90 pound bags of concrete make a yard?

Regarding this, “how many 90 lb bags of concrete in a yard?”, a 90 lb bag of concrete yields 0.025 cubic yard, as we know 1 yard concrete weighs around 3600 lb, so number of 90 lb bags of concrete in a yard = 3600/90 = 40 bags, so there are 40 bags of 90 lb concrete in a yard.

What is a good substitute for concrete?


We have collated 11 green building materials that offer alternatives to concrete, and a lower environmental impact.

  • Straw Bales. …
  • Grasscrete. …
  • Rammed Earth. …
  • HempCrete. …
  • Bamboo. …
  • Recycled Plastic. …
  • Wood. …
  • Mycelium.

How long do you leave forms on concrete?

The forms or “molding” that holds the concrete in place until it dries should be left alone for at least two days to ensure that the concrete is completely dry. If the forms are removed too soon, the concrete can begin to sag, crack and collapse, especially if conditions like temperature affected its strength.

What happens if you use cement without sand?

The proper ratio of materials will determine the strength of your concrete. Cement and water act as the paste of the concrete. If you don’t have enough paste, the concrete will dry with a honeycombed surface and may be too porous.