Gallons of Water per Foot of Pipe

Water Volume Formula:

\[ V = \pi \times \left(\frac{d}{2}\right)^2 \times 0.3048 \times 264.172 \]

Water Volume (gallons per foot):

1. What is Gallons of Water per Foot of Pipe?

Definition: This calculator estimates the volume of water contained in one foot of pipe based on its diameter.

Purpose: It helps plumbers, engineers, and irrigation specialists determine water capacity in pipes for system design and maintenance.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V = \pi \times \left(\frac{d}{2}\right)^2 \times 0.3048 \times 264.172 \]

Where:

\( V \) — Volume of water (gallons per foot)
\( d \) — Pipe diameter (meters)
\( \pi \) — Mathematical constant (~3.1416)
0.3048 — Conversion factor (meters per foot)
264.172 — Conversion factor (gallons per cubic meter)

Explanation: The formula calculates the cylindrical volume of the pipe and converts it to gallons per foot.

3. Importance of Water Volume Calculation

Details: Knowing water volume in pipes is crucial for system design, flow calculations, water hammer analysis, and chemical treatment dosing.

4. Using the Calculator

Tips: Enter the pipe diameter in meters. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the diameter input in meters?
A: The formula uses metric units for the diameter but converts to gallons per foot for practical use in many applications.

Q2: How do I convert inches to meters for pipe diameter?
A: Multiply inches by 0.0254 to get meters (e.g., 6" pipe = 0.1524 m).

Q3: Does this account for pipe wall thickness?
A: No, this calculates based on internal diameter. For precise calculations, use actual internal diameter.

Q4: Can I calculate for multiple feet of pipe?
A: Yes, multiply the result by the pipe length in feet to get total gallons.

Q5: What's the typical range for pipe diameters?
A: Residential pipes might be 0.5-2 inches (0.0127-0.0508 m), while industrial pipes can be much larger.