Common concrete drainage pipe sizes include round pipes with a 12-inch diameter and 2-inch wall thickness and round pipes with 72-inch inside diameter and 7-inch wall thickness. Some companies also manufacture elliptical pipes, often denoted using the equivalent round pipe sizes.
One common concrete drainage pipe size for round pipes is the 18-inch inside diameter pipe with a 2.5-inch wall thickness. This round pipe is equivalent to an elliptical concrete pipe with an inside end area of 1.8, a span of 23 inches and a rise of 14 inches. This pipe design has a greater weight per foot than its round equivalent.
Another common round pipe size is the 24-inch pipe, which has a wall thickness of 3 inches and is equivalent to an elliptical pipe with an inside end area of 3.3. The 30-inch round concrete pipe has a wall thickness of 3.5 inches and is equivalent to an elliptical pipe with an inside end area of 5.1.
One of the larger common concrete pipe sizes is the round pipe with an inside diameter of 54 inches and a wall thickness of 5.5 inches. This pipe is equivalent to an elliptical concrete pipe with an inside end area of 16.6, a span of 68 inches and a rise of 43 inches.