Wind Pressure on a Surface
Wind Pressure on a Surface
Wind exerts a dynamic pressure that scales with the square of speed — the starting point for cladding and structure wind loads.
The dynamic pressure is q = ½·ρ·v². where ρ is the air density and v the wind speed.
Inputs
rho := 1.226 kg/m^3=1.23 kg/m^3
v := 40 m/s=40 m/s
Apply the dynamic-pressure formula.
q := 0.5·rho·v^2=980.8 Pa
Results
Multiply by pressure coefficients and area for the actual force. Because it scales with v², a storm gust well over design speed raises the load sharply.
Assumptions & limitations
- Standard air density.
- Pressure coefficients applied separately.
- Quasi-static (no dynamic amplification).