Default ( k_l = 1.0 ). Turbulence intensity:
[ I_v(z) = \frack_lc_o(z) \cdot \ln(z/z_0) \quad \textfor z_min \leq z \leq 200 ] wind load calculation excel sheet eurocode
| Parameter | Cell | Value | |-----------|------|-------| | Building height h (m) | B3 | 12 | | Building width b (m) | B4 | 8 | | Building depth d (m) | B5 | 10 | | Terrain category (0-IV) | B6 | III | | Fundamental v_b0 (m/s) | B7 | 26 (e.g., Germany zone 2) | | Air density ρ (kg/m³) | B8 | 1.25 | | c_dir, c_season | B9,B10 | 1.0 | | Orography factor c_o | B11 | 1.0 | | cs cd factor | B12 | 1.0 (if h<15m) | Default ( k_l = 1
For structures with height > 15m or fundamental frequency < 5Hz: $$c_s c_d = \frac1 + 2 \cdot k_p \cdot l_v(z_s) \cdot \sqrtB^2 + R^21 + 7 \cdot l_v(z_s)$$ | Parameter | Cell | Value | |-----------|------|-------|
This is the most manual-intensive part of using a spreadsheet. The Eurocode provides charts based on the loaded area ($A$).