Use the concrete ruler on the side if you know your square footage and how deep you are pouring.
Take your square footage and divide it by the square foot # next to the inches that you are going to pour at and it equals the cubic yards you'll need.
A Pad that is 12'x12'x6"
Your square footage is 144
Find the square foot # next to your 6" depth on the ruler, which is 54.
Take 144 divided by 54 to get your total cubic yards needed, so you'll need 2.67 yards, which means 3 yards of concrete because we only pour in 1/2 yard increments.