What is the invert of a pipe?

The invert of a pipe refers specifically to the lowest point of the interior of the pipe. This is a crucial measurement in plumbing and civil engineering as it helps determine flow characteristics and drainage capacity. The invert level affects how the fluid moves through the system, ensuring proper gradient and managing the risk of backflow or blockages.

Understanding this term is essential for professionals working with pipeline infrastructure because it directly impacts the design and maintenance of plumbing systems. In practical applications, knowing the invert elevation can assist in determining connections to other pipes or drainage systems, ensuring optimal water movement.

While the other options mention different aspects of a pipe or its connections, they do not accurately define what an invert is, which specifically concerns the lowest point within the pipe where fluid is flowing.