## Hazen-Williams Equation Calculator

Here’s a comprehensive table summarizing all you need to know about the Hazen-Williams Equation:

## Hazen-Williams Equation Overview

## Hazen-Williams Coefficients (C)

Material | C Value |
---|---|

Cast Iron (unlined) | 100 |

Cast Iron (lined) | 130 |

Ductile Iron (cement lined) | 140 |

Steel | 130 |

PVC | 150 |

Copper | 130 |

## Key Points

**Usage**: Commonly used in designing water supply systems, fire sprinkler systems, and irrigation networks.**Accuracy**: Less accurate than the Darcy-Weisbach equation but simpler to use.**Temperature Sensitivity**: Does not account for water temperature or viscosity changes.**Flow Regime**: Best suited for turbulent flow in relatively smooth pipes.**Calculation Tools**: Many online calculators and software tools are available for easy computation.**Alternative Forms**: The equation can be rearranged to solve for different variables, such as pipe diameter or flow rate.**Industry Standard**: Widely accepted in the water industry, especially in North America.**Limitations**: Not suitable for fluids other than water or for extreme temperatures.

By understanding these aspects of the Hazen-Williams Equation, engineers and designers can effectively use it for water system calculations while being aware of its limitations and appropriate applications.