# What is The Average Cost of Concrete Slabs Per Square Foot?

The cost of concrete slabs will vary depending upon the size and depth of the slab as well as other factors.  The average cost of a concrete slab will be between \$5 and \$7 dollars per square foot or \$135 and \$189 per cubic yard.

## Calculate the Amount Needed

Once the slab size is determined, then it is time to calculate the amount of concrete that will be needed. Concrete is sold per cubic yard which is 27 square feet. To determine the amount of concrete needed multiply the square footage of the slab by the depth of the slab. Then divide that number by 27. Remember to add ten percent to the cubic yard figure to account for the loss that occurs during pouring and transport on the truck.

## Contact Concrete Companies

Once you have the amount of concrete needed, start contacting concrete companies for prices. Add their delivery charges to the cost of the concrete as well as any overtime fees that might become a factor. The area for the slab must be properly prepared prior to the concrete truck delivering and pouring the concrete. If the area is not ready, then overtime charges will be applied.

## Excavation Cost

The cost of concrete slabs also needs to include the cost of excavation. A base of gravel that is normally four inches thick is laid after the area is dug and footings are put in place. The cost of gravel is generally \$0.79 per square foot. Calculate the amount of gravel that will be needed and then contact local quarries for pricing. Remember to add in the delivery fees for the gravel.
The cost of a concrete slab will vary depending upon the size of the slab as well as the thickness. It is important to have the area cleared, leveled and ready for pouring prior to having the gravel trucks and concrete trucks come on site so that there are no overtime charges being applied to the final cost.