How much sand and gravel to make 6 yards of concrete?

To make 6 yards of concrete, you'll typically need a mix ratio of 1 part cement, 2 parts sand, and 3 parts gravel. For 6 yards of concrete, this translates to approximately 1 yard of cement, 2 yards of sand, and 3 yards of gravel. Since concrete is often measured in cubic yards, you'll need to ensure you have the correct volume of each material to achieve a total of 6 yards.