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Water Supply Pipe Size Calculation

Pipe Diameter Formula:

\[ D = \sqrt{\frac{4 \times Q}{\pi \times v}} \]

m³/s
m/s

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1. What Is Water Supply Pipe Size Calculation?

Water Supply Pipe Size Calculation determines the appropriate pipe diameter required to transport a specific flow rate of water at a given velocity. This calculation is essential for designing efficient and cost-effective water distribution systems.

2. How Does The Calculator Work?

The calculator uses the pipe diameter formula:

\[ D = \sqrt{\frac{4 \times Q}{\pi \times v}} \]

Where:

Explanation: This formula calculates the minimum pipe diameter needed to maintain the desired flow rate while keeping water velocity within acceptable limits to prevent pressure loss and pipe damage.

3. Importance Of Pipe Size Calculation

Details: Proper pipe sizing is crucial for ensuring adequate water pressure, minimizing energy costs, preventing water hammer, and maintaining system efficiency in residential, commercial, and industrial water supply systems.

4. Using The Calculator

Tips: Enter flow rate in m³/s and velocity in m/s. Typical water velocities range from 0.6-3 m/s for most applications. All values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What Is The Recommended Water Velocity In Pipes?
A: For most applications, water velocity should be between 0.6-3 m/s. Lower velocities reduce friction loss, while higher velocities may cause erosion and noise.

Q2: How Do I Convert Flow Rate From L/s To M³/s?
A: Multiply liters per second by 0.001 to get cubic meters per second (1 L/s = 0.001 m³/s).

Q3: What Factors Affect Pipe Size Selection?
A: Flow rate, velocity, pipe material, pressure requirements, friction losses, future demand, and local building codes all influence pipe size selection.

Q4: Can This Calculator Be Used For Other Fluids?
A: While the formula is universal, different fluids may require adjustments for viscosity and density considerations not accounted for in this basic calculation.

Q5: What Are Common Pipe Sizes In Practice?
A: Common pipe diameters range from 15mm (½ inch) for small residential lines to 300mm (12 inches) or larger for main distribution lines.

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