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Water Pressure Equation:
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Water pressure at the base of a tank is determined by the height of the water column above that point. This fundamental principle of hydrostatics shows that pressure increases linearly with water depth.
The calculator uses the water pressure equation:
Where:
Explanation: The constant 0.433 represents the pressure exerted by one foot of water column, derived from the density of water and gravitational acceleration.
Details: Accurate water pressure calculation is essential for designing water storage systems, determining pump requirements, ensuring proper water flow in plumbing systems, and maintaining structural integrity of tanks.
Tips: Enter the height of water column in feet. The value must be valid (height > 0). The calculator will provide the pressure at the base of the tank in pounds per square inch (psi).
Q1: Why is the constant 0.433 used?
A: This constant represents the pressure in psi exerted by one foot of water column, calculated from water density (62.4 lb/ft³) divided by 144 (sq inches per sq foot).
Q2: Does this calculation work for any liquid?
A: No, this specific equation is for water. Other liquids would require different constants based on their specific gravity.
Q3: What is typical water pressure in residential systems?
A: Most residential water systems operate between 40-80 psi, with 50-60 psi being ideal for most applications.
Q4: How does tank shape affect water pressure?
A: Tank shape doesn't affect the pressure at the bottom - only the height of water matters. However, shape affects total water volume and pressure distribution on side walls.
Q5: Can this calculation be used for elevated water tanks?
A: Yes, this is exactly how water pressure is calculated for municipal water towers and elevated storage tanks.