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Hydrostatic Pressure Formula:
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Hydrostatic pressure is the pressure exerted by a fluid at equilibrium at any given point within the fluid, due to the force of gravity. In water tanks, this pressure increases with depth and is measured in PSI (pounds per square inch).
The calculator uses the hydrostatic pressure formula:
Where:
Explanation: The constant 0.433 represents the pressure exerted by one foot of water column at standard conditions. This factor accounts for water's density and gravitational acceleration.
Details: Accurate PSI calculation is crucial for designing water systems, selecting appropriate pipe materials, ensuring structural integrity of tanks, and determining pump requirements for water distribution.
Tips: Enter the height of water in feet. The height should be measured from the point where pressure is being calculated to the water surface. All values must be valid (height > 0).
Q1: Why is the conversion factor 0.433?
A: This factor comes from the density of water (62.4 lb/ft³) divided by 144 (square inches per square foot): 62.4 ÷ 144 = 0.433 psi per foot.
Q2: Does this calculation work for other liquids?
A: No, this specific formula is for water. Other liquids would require different conversion factors based on their specific gravity.
Q3: What is considered normal water pressure in residential systems?
A: Typical residential water pressure ranges from 40-80 PSI, with most systems designed for 50-60 PSI.
Q4: How does tank shape affect pressure calculation?
A: Tank shape doesn't affect the pressure at a specific depth. Pressure depends only on water height, not container shape or volume.
Q5: When is this calculation most important?
A: This calculation is critical for designing tall buildings, water towers, industrial storage tanks, and any system where water height creates significant pressure.