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Wind Load for Rectangular Building with Duopitch Roof
According to Eurocode: EN 1991-1-4

wind-3d.png

Dimensions of the building

Width - B = m

Length - L = m

Height at roof ridge - h1 = m

Height at roof eaves - h2 = m

Pitch angle

α = atan((h1h2)·2/B) °

Spacing between:

     - frames - a = m

     - wind columns - b = m

     - side beams - cs = m

     - purlins - cp = m

Basic velocity pressure

Fundamental value of the basic wind velocity - vb_0 = kN/m²

[EN 1991-1-4, Table 4.1]

Terrain categories

Internal pressure coefficient - Cpi =

[EN 1991-1-4 Fig.7.13, Note 2]

(should be taken the relevant value of -0.3 and +0.2)


Substitute