Wfsu Pipe Lines

Overview

Engineering reference data for Wfsu Pipe Lines in fluid mechanics.

Key Formulas

Reynolds Number

$Re = \frac{\rho v D}{\mu}$

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}$

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

$A_1 v_1 = A_2 v_2$

Conservation of mass for incompressible flow.

Darcy-Weisbach

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Pressure drop due to friction in a pipe.

Variables

WSFU to Flow Rate Conversion

While WSFU values help size pipes, you may need actual flow rates for specialized equipment (manifolds, pumps, etc.). Use this conversion formula:

$$Q = 0.32 \times WSFU^{0.52}$$

Where:

• Q is the estimated flow rate (gpm)
• WSFU is the total Water Supply Fixture Units
• *0.32 and *0.52 are empirical constants from the UPC

Sizing Reference Tables

The following tables consolidate the maximum allowed WSFU for standard pipe sizes based on supply pressure and pipe length. Use these for sizing building supply lines, branch lines, meters, and service lines.

References

• Original Source