What is meant by "developed length" in plumbing?

The term "developed length" in plumbing refers to the length of a pipe measured along its center line. This measurement is crucial because it accounts for the actual flow path of fluids within the pipe, providing a more accurate representation of how the plumbing system will function. It is particularly important when calculating factors such as pressure loss due to friction, as these calculations rely on the true path that the fluid will travel.

When determining the developed length, the dimension reflects not only straight runs of pipe but also any bends and fittings included in the layout. This measurement assists plumbers and designers in ensuring the system meets appropriate specifications and performance criteria. In practical applications, using the center line measurement helps facilitate precise installations and proper sizing of components throughout the plumbing system.