Hazen-Williams C-Factor: What Does a Larger Value Indicate?

What does a larger Hazen-Williams C-factor value indicate?

When comparing friction loss in water pipes, a larger Hazen-Williams C-factor value indicates the pipe is:

a) More durable

b) Able to withstand a higher pressure

c) Smoother inside

d) Rougher inside

Answer:

The Hazen-Williams C-factor value is a measure of the smoothness inside a pipe. A higher C-factor indicates that the pipe has less friction loss, meaning that water can flow more easily and smoothly through it. This does not necessarily indicate that the pipe is more durable or able to withstand higher pressure.

The Hazen-Williams coefficient, abbreviated as C, also called Hazen-Williams friction coefficient, is a dimensionless number used in the Hazen-Williams Equation. The lower the coefficient, the smoother the pipe is. The higher the coefficient, the less fluid flow is restricted.

It is important to note that while a larger C-factor value indicates a smoother inside of the pipe, it does not directly correlate to the pipe being more durable or capable of withstanding higher pressure. The primary implication of a higher C-factor value is the reduction in friction loss and improved flow efficiency within the pipe.

Therefore, when assessing the Hazen-Williams C-factor value of a pipe, it is essential to consider its implications on fluid flow rather than its durability or pressure capacity.