Design Pressure Formula:
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Definition: This calculator determines the wind pressure exerted on structures based on air density and wind speed.
Purpose: It helps engineers and architects calculate design wind loads for buildings and other structures.
The calculator uses the formula:
Where:
Explanation: The kinetic energy of moving air is converted to pressure, with the square of wind speed being the dominant factor.
Details: Accurate wind pressure calculations are critical for structural integrity, safety, and compliance with building codes.
Tips: Enter air density (default 1.225 kg/m³ for standard conditions) and wind speed in m/s. All values must be > 0.
Q1: What's the standard air density value?
A: 1.225 kg/m³ at 15°C at sea level, but decreases with altitude and increases with lower temperatures.
Q2: How does wind speed affect pressure?
A: Pressure increases with the square of wind speed - doubling wind speed quadruples the pressure.
Q3: When would I use a different air density?
A: For high-altitude locations or extreme temperature conditions, adjust the air density accordingly.
Q4: Is this the same as wind load?
A: This calculates the dynamic pressure, which is then used with shape factors to determine actual wind loads on structures.
Q5: What units should I use?
A: The calculator uses metric units (kg/m³ for density, m/s for speed, Pa for pressure) for consistent results.