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Pool Weight Formula:
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The Pool Weight formula calculates the weight of water in a pool based on its volume in gallons. Since water weighs approximately 8.34 pounds per gallon, this calculation helps determine the total weight the pool structure must support.
The calculator uses the simple formula:
Where:
Explanation: This calculation assumes pure water at standard temperature and pressure conditions.
Details: Knowing the total weight of water in a pool is essential for structural engineering, proper foundation design, and ensuring the supporting structure can handle the significant load. This is particularly important for above-ground pools and rooftop installations.
Tips: Enter the pool volume in gallons. The value must be greater than zero. For irregularly shaped pools, calculate the total volume first before using this calculator.
Q1: Why is 8.34 pounds used per gallon?
A: This is the standard weight of one US gallon of water at room temperature (approximately 8.34 pounds or 3.785 kilograms).
Q2: Does pool water weight vary with temperature?
A: Yes, water density changes slightly with temperature, but for most practical pool applications, 8.34 pounds per gallon provides sufficient accuracy.
Q3: How do I calculate my pool's volume in gallons?
A: For rectangular pools: Length × Width × Average Depth × 7.48. For circular pools: π × Radius² × Average Depth × 7.48.
Q4: Should I include the weight of swimmers in my calculations?
A: For structural calculations, it's recommended to consider both the static water weight and dynamic loads from swimmers, which can add significant additional weight.
Q5: Does this calculation work for saltwater pools?
A: Saltwater is slightly denser than freshwater (approximately 8.55 pounds per gallon for seawater), so the weight would be slightly higher for saltwater pools.