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Design wind pressure
Design wind speed with the k factors, the wind pressure and the design pressure with the directionality, area and combination factors. Reference: IS 875 (Part 3):2015 Cl. 6.3, 7.2.
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# Site
V_b := 44 m/s
k_1 := 1.0
k_2 := 1.05
k_3 := 1.0
k_4 := 1.0
# k_2 = 1.05 for terrain category 2 at 15 m height (Table 2).
# Wind speed and pressure
V_z := V_b*k_1*k_2*k_3*k_4 =
p_z := 0.6*(V_z/(1 m/s))^2*1 Pa =
# Design pressure
K_d := 0.9
K_a := 0.8
K_c := 0.9
p_d := max(K_d*K_a*K_c*p_z, 0.7*p_z) = Pa
# The design pressure may not be taken less than 0.7 p_z.How to use this example
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