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Peak velocity pressure of wind

Basic wind velocity, roughness and turbulence and the peak velocity pressure at a height on flat terrain category II. Reference: EN 1991-1-4 4.2, 4.3, 4.4, 4.5.

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# Site
v_b0 := 22 m/s
c_dir := 1.0
c_season := 1.0
z := 10 m
z_0 := 0.05 m
z_0II := 0.05 m
c_0 := 1.0
rho := 1.25 kg/m^3

# Mean wind
v_b := c_dir*c_season*v_b0 =
k_r := 0.19*(z_0/z_0II)^0.07 =
c_r := k_r*log(z/z_0) =
v_m := c_r*c_0*v_b = m/s

# Turbulence and peak pressure
I_v := 1/(c_0*log(z/z_0)) =
q_p := (1 + 7*I_v)*0.5*rho*v_m^2 = kPa

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The same topic in IS 875

• Design wind pressure