# How much concrete do I need for a 24x24 slab?

## How much concrete do I need for a 24x24 slab?

For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags. If we add an extra 10%, that's an extra 8 60-pound bags or 6 80-pound bags.

## How do I measure how much concrete I need?

How to calculate concrete:

1. Determine how thick you want the concrete.
2. Measure the length and width that you'd like to cover.
3. Multiply the length by the width to determine square footage.
4. Convert the thickness from inches to feet.
5. Multiply the thickness in feet by the square footage to determine cubic feet.

## What is the best base for concrete?

Most concrete contractors want a mix of coarse and fine aggregate to create a compactable base that is going to be safe for settlement and drainage. Crusher run (a mix of crushed stone and stone dust) is one of the best base materials for concrete flatwork.

## What do you put down before concrete?

Tip. To shore up the subsurface, sprinkle a thin layer of cement sand onto the gravel and dampen it with water. Do not leave any standing water and allow the dampened sand to dry for about an hour before pouring the concrete. Ground preparation is key to pouring sidewalk, driveway or any other concrete slab.

## What size rebar do I need for a concrete slab?

Rebar in patios, basement floors, footings and driveways may vary from size 3 to 6. Contractors sometimes use the “1/8 Rule,” meaning the size of the rebar is 1/8 the thickness of the slab. For example, a slab that is 6 inches thick might have rebar marked as size 6 or 3/4-inch.

## Does a garage floor need rebar?

Wire mesh or thick reinforcement bars ("rebar") has long been a component of concrete slabs. However, with proper ground preparation, a good concrete mix, and sufficient expansion joints, it really isn't necessary. Still, many contractors continue to add the cheap insurance offered by reinforcement.

## Is fiber in concrete better than rebar?

The fiber mesh strengthens the concrete and the steel rebar reinforces the extra load areas. All concrete cracks. ... The fiber mesh is good stuff but can stick up above the concrete surface and look fuzzy.

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## Which is cheaper concrete or tarmac?

Is tarmac cheaper than concrete? The cost to initially lay the Tarmac is cheaper than concrete. ... Concrete is extremely durable and can last for at least 40 to 50 years. Compare this with Tarmac which has a usual lifespan of about 25 years and you can see that concrete will ultimately cost less.