# How to Measure Concrete for Patios

Concrete for your driveway, sidewalk or patio is measured and then converted to CU. YDS. to place an order with your local ready mix plant. The math below applies to slabs and poured walls not casings or columns.This equation requires length x width x thickness.

## Steps

- 1
**Use the following as an example.**- patio example: 12' x 12' patio with slab 4" thick
- 12' x 12' = 144 Sq. Ft. x thickness.

- patio example: 12' x 12' patio with slab 4" thick
- 2
**Determine decimal equivalence of thickness, This is done based on 1 cubic Ft.**12" x 12" x 12". Examples:- 6" thick would be .500
- 4" thick would be .333
- 3" thick would be .250 Etc.

- 3
**Do the calculations.**- 12 x 12 = 144 x .333 = 47.952 Sq. Ft. This is now converted to Cu. Yds.
- A cube 3' x 3' x 3' is one cubic yard. Take 3'x 3'x 3' = 27 cubic Ft. per cubic yard.

- 4
**Divide the result 47.952 Sq.**Ft. / 27 Cu. Ft. to reach the Cu. Yards needed. - 5
**47.952 divided by 27 = 1.776 Cu.**Yds. - 6
**Be sure to use all of the decimal points when doing your math.**The industry standard is to add^{1}⁄_{4}yard (0.2 m). to all material orders. You do not want to be short on your concrete order.- In this case your initial order amt. would be 1.776 Cu. Yds. + .250 or
^{1}⁄_{4}yard (0.2 or 0.2 m). for a grand total of 2.026 Cu. Yds. The importance of using all of the decimal points is illustrated in this case scenario. - As you can see the 2.026 Cu. Yds . in the total amt is not necessary as part of your final order because you have over ordered by
^{1}⁄_{4}yard (0.2 m). This will compensate for the 2.026 yards (1.9 m). Your final order amt. would be 2.0 Cu. Yds.

- In this case your initial order amt. would be 1.776 Cu. Yds. + .250 or

## Article Info

Categories: Concrete