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Questions and Answers
What is the pressure in psi for a specific gravity of 1.09 and a level of 126 inches?
What would be the calculated hydrostatic pressure (inches w.c.) for a level of 243 inches with a specific gravity of 7.01?
If the specific gravity is 1.15 and the level is 36 inches, what is the pressure in psi?
How many psi does a hydrostatic height of 300 inches with a specific gravity of 1.20 yield?
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If a specific gravity is 1.38 at a level of 60 inches, what is the corresponding pressure in psi?
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Study Notes
Hydrostatic Head Calculations
- The relationship between inches of water column (w.c.) and pounds per square inch (psi) : 27.7 in w.c. = 1 psi
- Formula for calculating pressure (P) in psi: P = 0.433 x SG x H
- SG = Specific Gravity
- H = Head in inches
- Actual inches level multiplied by SG equals inches of water column (in w.c.)
- The table shows various levels, pressures in inches w.c., specific gravity (SG), and calculated pressures in psi.
- To calculate the pressure in psi, use the formula above
- The first row's calculations are demonstrated:
- Level: 126 inches
- Specific Gravity: 1.09
- Pressure in in w.c.: 38.5
- Pressure in psi: 5
- Calculation: 0.433 x 1.09 x 38.5 = 5 psi
- The second row is an outlier due to the incorrect pressure calculation.
- All other rows show correct pressure calculations for the given level, specific gravity, and formula.
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Description
Test your understanding of hydrostatic head calculations, including the relationship between water column height and pressure. This quiz covers the formulas for converting inches of water column to psi and includes various specific gravity scenarios. Analyze the pressure calculations and identify any outliers in the data presented.
