1. What is Pressure From Head?

Pressure from head refers to the static pressure generated by the weight of a column of water. It's a fundamental concept in fluid mechanics and hydraulics, used to determine the pressure at the bottom of a water column.

2. How Does the Calculator Work?

The calculator uses the simple equation:

Where:

• \( P \) — Pressure in pounds per square inch (psi)
• \( head_{ft} \) — Height of water column in feet
• 0.433 — Conversion factor (psi per foot of water)

Explanation: Each foot of water height creates approximately 0.433 psi of pressure at its base.

3. Importance of Pressure Calculation

Details: Calculating pressure from head is essential for designing water systems, plumbing, hydraulics, and understanding fluid behavior in tanks, pipes, and other containers.

4. Using the Calculator

Tips: Simply enter the height of the water column in feet. The calculator will compute the resulting pressure in psi.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 0.433?
A: This comes from the weight of a column of water 1 foot high and 1 square inch in area (0.433 pounds), which creates 0.433 psi pressure.

Q2: Does this work for other liquids?
A: No, the 0.433 factor is specific to water. For other liquids, you need to multiply by their specific gravity relative to water.

Q3: Is this static or dynamic pressure?
A: This calculates static pressure. Dynamic pressure from flowing water would require additional calculations.

Q4: How accurate is this calculation?
A: It's very accurate for pure water at standard temperature (4°C). Temperature variations can cause minor changes in density.

Q5: What about atmospheric pressure?
A: This calculates gauge pressure (pressure above atmospheric). For absolute pressure, you would need to add atmospheric pressure (14.7 psi at sea level).