1. What is the Wind Pressure Formula?

Definition: This calculator computes the dynamic wind pressure based on air density and wind speed using Bernoulli's principle.

Purpose: It helps engineers, architects, and meteorologists determine wind loads for structural design and analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Wind pressure (Pascals)
• \( \rho \) — Air density (kg/m³)
• \( v \) — Wind speed (m/s)

Explanation: The formula calculates the dynamic pressure exerted by wind, proportional to the square of wind speed.

3. Importance of Wind Pressure Calculation

Details: Accurate wind pressure estimation is crucial for designing buildings, bridges, and other structures to withstand wind loads safely.

4. Using the Calculator

Tips: Enter air density (default 1.225 kg/m³ at sea level) and wind speed in m/s. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the standard air density value?
A: At sea level and 15°C, air density is approximately 1.225 kg/m³. Decrease by about 1% per 100m altitude.

Q2: How do I convert wind speed from km/h to m/s?
A: Divide km/h by 3.6 (e.g., 100 km/h ÷ 3.6 = 27.78 m/s).

Q3: Why is wind speed squared in the formula?
A: The kinetic energy of wind increases with the square of its speed, making high winds exponentially more powerful.

Q4: What's a typical wind pressure for building design?
A: Residential buildings often use 0.6-1.5 kPa, while skyscrapers may need to withstand 2-3 kPa or more.

Q5: Does this formula account for gust factors?
A: No, this gives basic dynamic pressure. Building codes often multiply by additional factors for gusts and turbulence.