# How Much Concrete Do You Need For 10×10 Foot Slab? Does 10×10 Slabs Need Rebar?

To calculate quantity of concrete for 10×10 feet slab, we need to calculate volume of the slab firstly. Here the thickness of slab is not mentioned. So, we will calculate for 4 inch, 5 inch, 6 inch, 8 inch and 10 inch thickness. Read the post to understand the concept easily. Also, we will see the number of concrete bags we needed for 10×10 feet slab.

## How Much Concrete Do You Need For 10×10 Foot Slab (4 Inch Thick)

We need to calculate the volume of the slab first when the thickness of slab is 4 inch.

Volume of slab

= length × width × thickness of slab

= 10 feet × 10 feet × 4 inch

= 120 inch × 120 inch × 4 inch

= 57600 cubic inch

= (57600 cubic inch/46656) cubic yard

(Note: Convert cubic inch to cubic yards then divide by "46656")

= 1.235 cubic yard

Taking 10% extra for shrinkage and wastage at site, then 1.235 + 10% of 1.235 = 1.359 cubic yard.

### Result

We need 1.359 cubic yard concrete for 10×10 feet slab with 4 inch thickness including 10% extra for wastage.

## How Much Concrete Do You Need For 10×10 Foot Slab (5 Inch Thick)

We need to calculate the volume of the slab first when the thickness of slab is 5 inch.

Volume of slab

= length × width × thickness of slab

= 10 feet × 10 feet × 5 inch

= 120 inch × 120 inch × 5 inch

= 72000 cubic inch

= (72000 cubic inch/46656) cubic yard

(Note: Convert cubic inch to cubic yards then divide by "46656")

= 1.543 cubic yard

Taking 10% extra for shrinkage and wastage at site, then 1.543 + 10% of 1.543 = 1.697 cubic yard.

### Result

We need 1.697 cubic yard concrete for 10×10 feet slab with 5 inch thickness including 10% extra for wastage.

## How Much Concrete Do You Need For 10×10 Foot Slab (6 Inch Thick)

We need to calculate the volume of the slab first when the thickness of slab is 6 inch.

Volume of slab

= length × width × thickness of slab

= 10 feet × 10 feet × 6 inch

= 120 inch × 120 inch × 6 inch

= 86400 cubic inch

= (86400 cubic inch/46656) cubic yard

(Note: Convert cubic inch to cubic yards then divide by "46656")

= 1.852 cubic yard

Taking 10% extra for shrinkage and wastage at site, then 1.852 + 10% of 1.852 = 2.037 cubic yard.

### Result

We need 2.037 cubic yard concrete for 10×10 feet slab with 6 inch thickness including 10% extra for wastage.

## How Much Concrete Do You Need For 10×10 Foot Slab (8 Inch Thick)

We need to calculate the volume of the slab first when the thickness of slab is 8 inch.

Volume of slab

= length × width × thickness of slab

= 10 feet × 10 feet × 8 inch

= 120 inch × 120 inch × 8 inch

= 115200 cubic inch

= (115200 cubic inch/46656) cubic yard

(Note: Convert cubic inch to cubic yards then divide by "46656")

= 2.469 cubic yard

Taking 10% extra for shrinkage and wastage at site, then 2.469 + 10% of 2.469 = 2.716 cubic yard.

### Result

We need 2.716 cubic yard concrete for 10×10 feet slab with 8 inch thickness including 10% extra for wastage.

## How Much Concrete Do You Need For 10×10 Foot Slab (10 Inch Thick)

We need to calculate the volume of the slab first when the thickness of slab is 10 inch.

Volume of slab

= length × width × thickness of slab

= 10 feet × 10 feet × 10 inch

= 120 inch × 120 inch × 10 inch

= 144000 cubic inch

= (144000 cubic inch/46656) cubic yard

(Note: Convert cubic inch to cubic yards then divide by "46656")

= 3.086 cubic yard

Taking 10% extra for shrinkage and wastage at site, then 3.086 + 10% of 3.086 = 3.395 cubic yard.

### Result

We need 3.395 cubic yard concrete for 10×10 feet slab with 10 inch thickness including 10% extra for wastage.

## Calculate Number of Concrete Bags Required in 10×10 Foot Slab

To know the concrete bags required for your structure, you need to know the total volume of your structure and the volume of a single concrete bag in the same unit available for you. Now you can divide the total volume of structure by volume of a single concrete bag to know the total number of concrete concrete bags required for the structure.

**Example:**

We need 1.359 cubic yard concrete for 10×10 foot slab with 4 inch thickness including 10% extra for wastage.

Here, volume of concrete in structure is 1.359 cubic yard.

Taking a concrete bag of volume 40 lb (yield value is 0.30 cubic foot)

Volume of concrete bag in cubic yard = (0.30 cubic feet × 0.037) = 0.011 cubic yard

Number of concrete bags

= Volume of Concrete / Volume a Bag of Concrete

= 1.359/0.011

= 123.55 bags

So, you will need to buy

**124 nos concrete bags**of 40 lb (yield value 0.30 cubic foot) for 10×10 feet slab with 4 inch thickness including 10% extra for wastage.## Does 10×10 Slabs Need Rebar?

Need of rebar in 10×10 slab depends upon various factors such as the uses and load distribution. Generally in low traffic PCC road or some patio do not required any reinforcement where high traffic roads, patio for heavy vehicle parking and any type of roof need wire mess or rebars to distribute the load acting on the slab. We advice you to consult with experts for your requirements.