Wsfu Gpm

Overview

Engineering reference data for Wsfu Gpm in miscellaneous.

Key Formulas

Unit Conversion

$y = x \cdot k$

Multiply by conversion factor.

Linear Interpolation

$y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}$

Estimate between two known points.

Percentage

$p = \frac{\text{part}}{\text{whole}} \times 100\%$

Part as fraction of whole.

Variables

Symbol	Description	Unit
$x$	Input value	—
$y$	Output value	—
$k$	Conversion factor	—

WSFU Demand Tables

Water Supply System without Flush Valves

The following table provides estimated demand for water supply systems when the load in WSFU is known, for systems without flush valves.

Water Supply System with Flush Valves

The following table provides estimated demand for water supply systems when the load in WSFU is known, for systems with flush valves.

Important Design Notes

• Minimum Flow Rate Rule: The minimum flow rate in a system can never be less than the flow demand of the fixture with the highest individual demand.

• Compensation Factor: The conversion of 1 WSFU = 1 GPM applies only when sizing for a single fixture or a very small number of fixtures. For larger systems, probability curves or demand tables (shown above) must be used to account for the statistical likelihood that not all fixtures operate simultaneously.

• Special Equipment: When sizing for special equipment or manifolds, use the demand tables above to determine the required flow rate rather than simple unit conversion.

Interactive Charts

References

• Original Source