Consideration of the Correlation with Wind Loads
Tips & Tricks
For buildings with an aspect ratio of h / d = 5, the resulting force is multiplied by 1. For buildings with h / d = 1, the resulting force may be multiplied by 0.85. Intermediate values of h / d are linearly interpolated.
However, it must be ensured that the consideration of this approach  can be limited by the National Annex of DIN 1991-1-4. For example, this approach does not apply in  Germany according to DIN EN 1991-1-4 / NA.
National Annex: CEN
Building height h = 7 m
Building width d = 6 m
Ratio h / d = 1.166667
External pressure coefficients according to Table 7.1:
Zone D: cpe,10 = 0,800
Zone E: cpe,10 = -0,508
Basic wind speed vb, 0 = 20 m / s
Resulting wind load without consideration of the correlation:
Zone D: Zone D: we = 0.56 kN / m²
Zone E: we = -0,35 kN/m²
Resulting wind load with consideration of the correlation:
Zone D: we = 0,56 kN/m² ∙ 0,85 = 0,48 kN/m²
Zone E: we = -0,35 kN/m² ∙ 0,85 = -0,30 kN/m²
Depending on whether the correlation in the respective National Annex is allowed or not, this can be activated in the input table of the wind load generator in RFEM / RSTAB (see Fig. 01).
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