In practice, Eurocode provides a more direct route:
Simplify for engineering: Use the tabular values from EN 1991-1-4 Table 4.11. wind load calculation excel sheet eurocode
Introduction For structural engineers, calculating wind loads is not just a preliminary step—it is a fundamental requirement for ensuring the safety, serviceability, and economy of a structure. In Europe, the governing standard is EN 1991-1-4: Eurocode 1: Actions on structures - Part 1-4: General actions - Wind actions . In practice, Eurocode provides a more direct route:
q_p(z) = q_b * c_e(z) * c_o(z)*2 Where ( c_o(z) ) is the orography factor (usually 1.0 unless on a hill). wind load calculation excel sheet eurocode
[ c_s c_d = \frac1 + 2 \cdot I_v(z_s) \cdot \sqrtB^2 + R^21 + 7 \cdot I_v(z_s) ]
Create a lookup table in sheet "Terrain":