What factor indicates the smoothness of the interior of a pipe?

Prepare for the Water Distribution Level 3 Exam with comprehensive questions, detailed answers, and in-depth explanations. Equip yourself with the knowledge needed to succeed!

The smoothness of the interior of a pipe is indicated by the C-factor, which is a characteristic pertaining to the pipe's material and surface condition. The C-factor reflects how much frictional resistance the water encounters as it flows through the pipe. A higher C-factor indicates a smoother surface, which means less resistance to flow, resulting in reduced energy loss and improved flow efficiency.

Factors such as flow rate, diameter, and velocity do affect the performance of a water distribution system, but they do not specifically measure the interior smoothness of a pipe. The flow rate pertains to the quantity of water moving through the system, the diameter influences capacity and velocity, and the velocity describes how fast the water is flowing. However, the C-factor is the key parameter that directly assesses the smoothness and affects the overall hydraulic performance of the pipe.

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