What does a pipe with a "C" factor of 140 indicate about its interior?

A pipe with a "C" factor of 140 indicates that it has an extremely smooth interior. The "C" factor is a measure used in the Hazen-Williams equation, which helps determine the flow of water through pipes. A higher "C" factor represents a lower level of friction experienced by water as it flows through the pipe.

In this context, a "C" factor of 140 suggests that the interior surface is very smooth, allowing water to flow with minimal resistance. This is often characteristic of new or well-maintained pipes made from smooth materials, leading to more efficient flow rates. Understanding the implications of the "C" factor is crucial for engineers and operators when designing and maintaining water distribution systems, as it directly impacts the pressure and velocity of water delivery.